Frequency Sweep Tests Research Articles

Influence of Anaerobic Degradation of Organic Matter on the Rheological Properties of Cohesive Mud from Different European Ports

The presence of clay-organic flocs in cohesive mud results in a complex rheological behavior of mud, including viscoelasticity, shear-thinning, thixotropy and two-step yielding. In this study, the effect of microbial degradation of organic matter on the rheological properties of mud samples, collected from different ports, was examined. The mud samples were collected from five different European ports (Port of Antwerp (PoA), Port of Bremerhaven (PoB), Port of Emden (PoE), Port of Hamburg (PoH) and Port of Rotterdam (PoR)), displaying varying sediment properties. The rheological analysis of fresh and degraded mud samples was performed with the help of several tests, including stress ramp-up tests, amplitude sweep tests, frequency sweep tests, time-dependent tests and structural recovery tests. The results showed: (i) a significant decrease in yield stresses and complex modulus after organic matter degradation for mud samples from PoA, PoH and PoR, (ii) a negligible change in rheological properties (yield stresses, crossover amplitude and complex modulus) for mud samples from PoB, and (iii) a significant increase in rheological properties for mud samples from PoE. For time-dependent tests, mud samples from PoB showed a substantial increase in hysteresis (~50% mean value) as compared to the changes in yield stresses and crossover amplitude. The analysis of gas production during degradation of organic matter showed a (i) significant release of carbon per g dry matter for mud samples from PoA, PoH and PoR, (ii) lower carbon release per g dry matter for mud samples from PoB, and (iii) a negligible carbon release per g dry matter for mud samples from PoE, which corresponded well with the change in rheological properties.

Oscillatory and Thermo Rheological Studies of Wheat and Chickpea Flour Blended Doughs for Producing Arabic Flat Bread

Doughs made from blends of white wheat flour and wholegrain wheat flour mixed with chickpea flour were studied rheologically and morphologically in an effort to understand the effect of chickpea flour on the rheology of doughs. The doughs were subjected to a variety of rheological tests to understand how chickpea flour substitution affects wheat dough rheological behavior. Strain sweep, frequency sweep and temperature sweep tests were carried out. Strain sweep tests show that chickpea flour dough has a significantly strong nonlinear behavior compared to white wheat flour dough and wholegrain wheat flour dough. Frequency sweep tests show the solid like behavior of the doughs. From the theoretical analysis of strain sweep and frequency sweep experimental results, we conclude that up to 10% substitution of chickpea flour to wheat flour does not alter the doughs rheological behavior. Temperature sweep tests show that the chickpea flour dough follows zero-order gelatinization kinetics, whereas white wheat flour dough and wholegrain wheat flour doughs follow first-order gelatinization kinetics.

Reinforcing DNA Supramolecular Hydrogel with Polymeric Multiple-Unit Linker

Reinforcing DNA Supramolecular Hydrogel with Polymeric Multiple-Unit Linker

Impact of maturity on mechanical and textural properties and rheological properties modeling of wood apple fruit (Limonia acidissima)

AbstractWood apple (Limonia acidissima) is monsoonal fruit comprising of pulp with an exterior hard shell. The investigation of mechanical and textural properties according to maturity stages (unripe, semi‐ripe, and ripe) and rheological modeling of ripe fruits is beneficial for post‐harvest maturity grader and processing equipment development. The compression mechanical properties of whole fruit at maturity stages along the x‐axis, y‐axis, and z‐axis orientations recorded minimum rupture force (962.73 N) for ripe fruits followed by semi‐ripe and unripe along z‐axis and maximum force (2,256.2 N) for unripe fruits along y‐axis. The pulp puncture test at maturity stages for textural properties recorded reduced hardness value with maturity having 12.84, 4.30, and 3.88 N for unripe, semi‐ripe, and ripe fruits, respectively. The rheological properties for ripe fruits pulp validated cross and Carreau‐Yasuda best‐fit models (R2 = 0.9) for steady shear indicating non‐Newtonian, shear‐thinning behavior as viscosity (η) reduced from 1,508.45 Pa s while dynamic shear for frequency sweep test indicated elastic behavior as storage modulus G′ > loss modulus G″ and tan δ < 1 for power model (R2 = 0.9). The mechanical and textural properties of wood apple exhibited significant variance according to the maturity of the fruit.Practical ApplicationsWood apple, despite being underutilized in the global fruit trade, has vast application in nutraceuticals industries. The steady shear flow properties of wood apple pulp can be used in engineering design applications such as manufacturing, packaging, and storage; they can be utilized to determine flow parameters and predict the degree of structural breakdown with shear. Because of the numerous processing systems in use, it is essential to precisely forecast rheological behavior. Oscillatory experiments of wood apple pulp can be used to study pulp structure, the strength of pulp and dependency on the shear rate of pulp. The findings of this study will substantially assist food processing industries in producing wood apple pulp‐based products.

Emulsions undergoing phase transition: Effect of emulsifier type and concentration

Pickering emulsion stabilized by cellulose nanocrystals (CNCs) during the phase transition of the dispersed oil is poorly understood. We investigated the capability of CNC in stabilizing Pickering emulsions during the temperature-induced phase transition. Paraffin wax emulsions stabilized by sodium dodecyl sulfate (SDS) were less stable than CNC stabilized emulsions. The relationship between droplet size and emulsifier content was examined, and a new model describing this relationship is proposed. The droplet size of CNC-based systems was not affected by temperature variation, even at low CNC concentrations. The minimum CNC content required to stabilize the paraffin wax emulsion was lower than SDS. DSC results indicated that higher droplet surface coverage with emulsifiers enhanced the deformation resistance of the crystallized droplets, which enhanced the emulsion stability. Temperature sweep viscosity measurements showed that the stability of CNC-based systems was not significantly impacted by the phase transition of the paraffin wax. Rheological amplitude sweep analysis indicated that emulsions above the melting point of paraffin wax were more stable at all strain levels. However, the SDS-based systems displayed substantial heterogeneity after the liquid-solid transition. Frequency sweep tests revealed that CNC-stabilized emulsions were more stable than SDS-stabilized emulsions.

Comparison and Evaluation of Different Test Methods and Models for Determining Zero Shear Viscosity of Asphalt Binder

Abstract Zero shear viscosity (ZSV) has been proven to be a reasonable indicator for characterizing the high-temperature performance of asphalt binders. Various test methods and models have been used in the literature to determine the ZSV, while no consistent result can be obtained. In addition, the differences and similarities among these methods are not yet clear, which can often bring difficulties and confusion to researchers when trying to implement the ZSV methods. This paper aims to evaluate the applicability of different test methods and rheological models in determining the ZSVs of asphalts. The shear rate sweep test, frequency sweep test, and creep test were performed on 60/80 and 80/100 pen grade base asphalts and styrene-butadiene-styrene (SBS) modified asphalt, and ZSVs were determined using Carreau’s model, Carreau-Yasuda model, Cross/Sybilski’s model, Cross/Williamson’s model, Burger’s model, the threshold method, and the ratio method. The test results showed that the shear rate sweep test and the creep test have lower variability and better applicability than the frequency sweep test, and the four rheological models and the threshold method used in the shear rate sweep test could determine the ZSV well. In the frequency sweep test, the Cross/Sybilski’s model failed to determine the ZSVs of all asphalts, and the ZSV of SBS asphalt could only be calculated by the ratio method. Under different test methods and models, the ZSVs of each base asphalt were similar, while that of SBS asphalt were significantly different. Considering the time consumption and applicability of the test, the shear rate sweep test seems to be the most promising test method for determining ZSVs.

Laboratory investigation on viscoelastic and fatigue properties of diatomite modified asphalt based on dynamic shear rheometer

Diatomite has a promising application prospect as a commonly used modifier in asphalt, with low production costs and no pollution. In this study, frequency sweep tests and multiple stress creep recovery tests were carried out to analyze the viscoelastic properties of diatomite-modified asphalt. The time sweep tests and linear amplitude sweep tests were performed to investigate the fatigue properties of asphalt based on the viscoelastic continuous damage theory and dissipative energy theory. Subsequently, the correlation between viscoelastic properties and fatigue properties was revealed by the Pearson correlation coefficient. The results show that adding diatomite has an adverse effect on fatigue performance of asphalt, which is mainly attributed to the increase in the heat dissipation energy generated by adding diatomite during the dynamic loading cycle. In addition, the addition of diatomite can improve the elastic recovery ability of asphalt and reduce the unrecoverable creep compliance of asphalt. The correlation between the fatigue life and the irrecoverable deformation rate of diatomite modified asphalt is greater than 0.88. This work can be used as a reference not only for the application of diatomite in pavement engineering but also for the investigation of the viscoelastic and fatigue characteristics of other inorganic powder modified asphalt.

Influence of high content crumb rubber and different preparation methods on properties of asphalt under different aging conditions: Chemical properties, rheological properties, and fatigue performance

Asphalt pavements are prone to aging in construction and during service, which can affect the properties of the asphalt. The aging behaviors of high content crumb rubber modified asphalt (HCRMA) were investigated in this paper. The binders were aged in the laboratory and the performances before and after aging were tested using the attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) test, temperature sweep (TS) test, frequency sweep tests, multiple stress creep recovery (MSCR) test, zero shear viscosity (ZSV) test, bending beam rheometer (BBR) test, and linear amplitude sweep (LAS) test. The FTIR test result shows that as the aging progresses, the crumb rubber (CR) continues to undergo desulphurization and degradation reactions in the HCRMA, with the release of substances such as silica and S-C bonded material from the CR into the bituminous phase. The elasticity of HCRMA decreases and then increases as the degree of aging increases. Besides, the low temperature performance of HCRMA is controlled by the stiffness value, and the low temperature stress relaxation properties of HCRMA in the aging process are better than that of 20% content crumb rubber modified asphalt. Moreover, aging can reduce the integrity and fatigue resistance of HCRMA while increasing the compatibility of HCRMA.

Rheological, Textural, and Digestibility Characteristics of Low Fat Mayonnaise as Affected by the Addition of Sorghum‐Xanthan Gum and Corn‐Xanthan Gum Extrudates (RS3)

AbstractLow‐fat mayonnaise samples are produced using corn (EC) and sorghum (ES) starch extrudates. The resistant starch rich (RS3 ) extrudates are produced by extruding corn and sorghum starch in the presence of xanthan gum at 1% w/w level, i.e., ECX and ESX, respectively. These extrudates are incorporated in low fat mayonnaise at 10% w/w. The EC and ES based mayonnaise, i.e., MC and MS, respectively are treated as control mayonnaise while the ECX and ESX incorporated mayonnaise MCX and MSX, respectively are low‐fat mayonnaises prepared with RS3 starches and hence are compared to control. Rheological characterization of the samples is done using frequency sweep tests, flow curves, and oscillatory tests. The tan θ values obtained through frequency sweep measurements classify mayonnaise samples into weak gels. All the mayonnaise samples best‐fitted the power law model and exhibit thixotropic (time‐dependent), shear‐thinning behavior with thixotropy being higher in MS and MSX. The % recovery and % strain of corn based mayonnaise are found to be higher. The incorporation of ESX extrudates increases the viscosity, improves the firmness and decreases the predicted glycemic index of MSX as compared to MS and MCX while providing a stable emulsion with appropriate rheological, textural, and sensory attributes.

Microfluidic Seeding of Cells on the Inner Surface of Alginate Hollow Microfibers.

Mimicking microvascular tissue microenvironment in vitro calls for a cytocompatible technique of manufacturing biocompatible hollow microfibers suitable for cell-encapsulation/seeding in and around them. The techniques reported to date either have a limit on the microfiber dimensions or undergo a complex manufacturing process. Here, a microfluidic-based method for cell seeding inside alginate hollow microfibers is designed whereby mouse astrocytes (C8-D1A) are passively seeded on the inner surface of these hollow microfibers. Collagen I and poly-d-lysine, as cell attachment additives, are tested to assess cell adhesion and viability; the results are compared with nonadditive-based hollow microfibers (BARE). The BARE furnishes better cell attachment and higher cell viability immediately after manufacturing, and an increasing trend in the cell viability is observed between Day 0 and Day 2. Swelling analysis using percentage initial weight and width is performed on BARE microfibers furnishing a maximum of 124.1% and 106.1%, respectively. Degradation analysis using weight observed a 62% loss after 3 days, with 46% occurring in the first 12h. In the frequency sweep test performed, the storage modulus (G') remains comparatively higher than the loss modulus (G″) in the frequency range 0-20Hz, indicating high elastic behavior of the hollow microfibers.

Evaluation of test methods for measurement of zero shear viscosity (ZSV) of asphalt binders

Zero shear viscosity (ZSV) is believed to be a good indicator of asphalt binder resistance to permanent deformation. It has widespread use in rutting characterization and is considered a good substitute for vacuum capillary viscosity. In the past many years, a number of test methods have been developed to measure the ZSV of asphalt binders. However, there is always a concern among researchers about reliable measurement of ZSV, especially of polymer modified asphalt binders. The objective of this study was to evaluate the applicability of three commonly used test methods, including the frequency sweep test, the shear rate sweep test, and the creep test, to different types of asphalt binders. A Discovery Hybrid Rheometer (DHR) was employed to perform the three tests on three neat asphalt binders and three SBS-modified asphalt binders with different performance grades at a temperature of 60 °C. After analyzing the test results, it was found that the ZSV of neat asphalt binders could be measured accurately and reliably using each of the three test methods. However, the shear rate sweep test was the only feasible approach to measure the ZSV of SBS-modified asphalt binders. The lack of viscosity plateau in the measured plot of complex viscosity versus angular frequency made it impossible to obtain a reliable prediction of ZSV from the frequency sweep test for SBS-modified asphalt binders. The creep test was not recommended for SBS-modified asphalt binders because it was difficult to ensure the shear viscosity was measured from the Newtonian plateau region. It can be concluded from this study that the selection of appropriate test methods depends on whether there is a viscosity plateau in the measured data.

Effect of organic matter degradation in cohesive sediment: a detailed rheological analysis

PurposeThe presence of organic matter in cohesive sediment results in the formation of clay-organic flocs, which eventually impart complex rheological behavior including shear-thinning, viscoelasticity, thixotropy and two-step yielding to mud. In this study, the influence of microbial degradation of sediment organic matter on the rheological properties of mud samples, having similar densities, was examined.Materials and methodsMud samples were collected from three different locations in the Port of Hamburg, Germany, displaying varying organic matter content. The rheological analysis of fresh and degraded mud samples was performed with the help of several tests including stress ramp-up tests, amplitude sweep tests, frequency sweep tests, time-dependent tests, and structural recovery tests.Results and discussionThe results showed a significant decrease in rheological properties including yield stresses, complex modulus, etc. for degraded mud samples as compared to the fresh mud samples. The slopes of the line, correlating the change (degraded − fresh) in the above-mentioned rheological properties as a function of the same rheological property of the fresh mud, varied within the range of −0.28 to −0.49. The structural recovery tests displayed a better recovery (i.e., stronger system) in mud after the pre-shearing step for the degraded mud samples as compared to the fresh mud samples. The effect of degradation time on the rheological properties of mud samples showed two critical time periods (3 days and 150 days) after which a significant change in rheological properties of mud samples was observed.ConclusionsThis study provided a useful understanding about the influence of organic matter degradation on the rheological properties of mud, which can be used to optimize sediment management strategies in ports and waterways.

High-temperature rheological properties of waterborne epoxy asphalt emulsion mastic

In this study, Portland cement and limestone dust were added as mineral filler to anionic and cationic waterborne epoxy asphalt emulsion (WEA), respectively, and four types of waterborne epoxy asphalt emulsion mastics were prepared. A filler-WEA (F/WEA) ratio of each WEA mastic refers to the weight ratio of filler and WEA, ranging from 0.3 to 1.2 at 0.3 increments. Four WEA mastics with different F/WEA ratios were subjected to temperature sweep test, frequency sweep test, and multiple stress creep and recovery test by using a dynamic shear rheometer, and the rheological parameters (e.g., Superpave rutting parameter, non- recoverable creep compliance) were obtained. The results show that WEA-cement mastics, especially anionic mastics, had excellent high-temperature deformation resistance due to the existence of waterborne epoxy-cured products and cement hydration products in the mastics system. In contrast, non-chemical interaction between limestone dust and WEA resulted in a slight improvement in the high-temperature performance of WEA-limestone mastics. In addition, the rheological parameters of four WEA mastics all exhibited significant correlations with F/WEA ratio. The F/WEA ratio had more effect on the rheological properties of WEA-limestone mastics than that of WEA-cement mastics.

Chemical and Rheological Characterization of Asphalt Binders: A Comparison of Asphalt Binder Aging and Asphalt Mixture Aging

The objective of this study was to compare the chemical and rheological properties of asphalt binders recovered from aged asphalt mixtures with the corresponding aged asphalt binders used in those mixtures. Seven plant-produced asphalt mixtures, with unmodified and polymer modified asphalt binders and varying reclaimed asphalt pavement (RAP) content, were compacted and aged in a conventional oven at 85°C for zero (unaged), five, or 10 days. Asphalt binders were extracted and recovered from each aging level for chemical and rheological characterization. Seven blends of virgin asphalt binder and RAP binder were constituted to be similar to those used in the seven plant-produced asphalt mixtures. Subsequently, each asphalt binder blend was aged by rolling thin film oven (RTFO) and pressure aging vessel (PAV) for chemical and rheological characterization. Chemical and rheological characterization included Fourier transform infrared spectroscopy, high and intermediate temperature performance grade (PG), frequency sweep, and linear amplitude sweep (LAS) tests. Asphalt mixtures aged for five and 10 days resulted in asphalt binders that were less aged than similar ones aged by PAV when measured by LAS fatigue parameter ALAS, frequency sweep Glover Rowe (G-R) parameter, and intermediate temperature PG. However, unaged asphalt mixtures yielded asphalt binders with similar properties to those aged in RTFO as measured by high temperature PG. Correlation analysis between asphalt binder and asphalt mixture aging revealed that the G-R parameter has the highest coefficient of correlation among parameters. Further, new aging indices were introduced to capture the effect of polymer modification on aging susceptibility.

Case study: Characterization of short-term field aged asphalt binders in cold mix asphalt pavement

In recent years, rejuvenators have been used in cold asphalt mixtures to assist sustainability efforts. However, most studies on this topic have focused on laboratory prepared samples only. This study characterized the short-term field asphalt binders that were extracted from the surface layer of a field project that utilized cold mix with 100% reclaimed asphalt pavement (RAP) and rejuvenator in Florida, USA. Rheological testing was performed on the extracted RAP binders with and without rejuvenator with respect to high and intermediate temperature performance grading (PG), multiple stress creep recovery (MSCR), frequency sweep, and monotonic fracture tests. Results showed that there was no significant difference in rutting resistance between extracted rejuvenated RAP binder and extracted RAP binder. The rejuvenated RAP binder had lower stiffness and better relaxation properties than the RAP binder suggesting it can soften recycled binders. Furthermore, the rejuvenated RAP binder exhibited higher fatigue life and higher failure strain than the RAP only binder, suggesting that the addition of rejuvenator in the 100% RAP can restore the functionality and flexibility of recycled binders in a short-term field aging period.

Characterization of asphalt binders extracted from field mixtures containing RAP and/or RAS

The use of reclaimed asphalt pavement (RAP) and/or recycled asphalt shingles (RAS) in the asphalt mixtures is a common practice in the U.S.A. However, there is a controversy to date on how RAP/RAS interact with virgin asphalt binders (VABs) in asphalt mixtures. For mixtures containing RAP/RAS, the aged asphalt binders in RAP and air-blown asphalt binders in RAS alter the performances of the extracted asphalt binders (EABs). Thus, the rheological properties of EABs from these mixtures require more investigation. The focus of this paper was relating the high-temperature properties of EABs from field cores to the corresponding rolling thin film oven aged virgin asphalt binders (RTFO AVABs). Furthermore, a comparison of the effect of RAP and RAS on the high-temperature rheological properties of EABs was another objective. Different asphalt cores were collected from the field within two weeks after the pavement construction process in 2016. These cores represented eight asphalt mixtures with different asphalt binder replacement percentages by RAP, RAS, or both. The asphalt binders were extracted from these mixtures and considered as RTFO AVABs. The high-temperature rheological properties included the temperature sweep and frequency sweep testing and the multiple stress creep recovery testing. The EABs had higher stiffnesses and elasticates than the corresponding RTFO AVABs because of the aged binders in RAP/RAS. The binders in RAP interacted more readily with VABs than RAS binders.

Interactions between RAP and virgin asphalt binders in field, plant, and lab mixes

Reclaimed asphalt pavement (RAP) has been used in asphalt mixes for several years in the United States. However, the interactions between the RAP binder and the virgin asphalt binder (VAB) need further investigations. Thus, the main objective of this study was to explore the rheological and chemical properties of extracted asphalt binders (EABs) from plant, field, and lab mixes. The plant mixes were collected from behind the paver, reheated to the compaction temperature, and compacted in the lab. The field mixes were collected as cores within two weeks after the end of the construction process. The lab mixes were fabricated in the lab using the same materials used in the plant and field mixes. The mixes contained high asphalt binder replacement percentages by RAP, which were greater than 30%. The EABs were treated as rolling thin film oven aged VABs (RTFO AVABs). The rheological properties of EABs and RTFO AVABs were analyzed using temperature sweep, frequency sweep, and multiple stress creep recovery tests. Chemical investigations of EABs and RTFO AVABs were carried out using Fourier transform infrared spectroscopy and thermogravimetric analysis. The EABs from plant or lab mixes showed higher stiffnesses than EABs from field mixes. This occurred because of the extra heating that was implemented for the plant mixes before the compaction in the lab, which caused more interactions between the RAP binder and VABs. The fabrication mechanism, mixing and short-term aging processes, used in lab mixes caused more interactions between RAP binder and VABs than in the field mixes.

Structural and mechanical evolution of the multiphase asphalt rubber during aging based on micromechanical back-calculation and experimental methods

Asphalt rubber (AR) is a sustainable paving material composed of bitumen and crumb rubber modifier (CRM) recycled from waste tires. The interaction between bitumen and CRM re-distributes the bitumen fractions and creates a multiphase internal structure of AR. Although the superior aging resistance of AR has been acknowledged, the aging mechanism of AR remains unclear due to the limited understanding on the behaviors of different phases of AR during aging. This study aims to investigate the structural and mechanical evolution of AR binder during aging through micromechanical back-calculation and experimental tests. A series of separation methods were used to disintegrate the multiphase system of AR at four aging conditions. The mechanical properties of different phases obtained from frequency sweep tests and their volumetric fractions were used as the input for the micromechanical back-calculation, which yielded accurate prediction for the complex modulus of swelling rubber but failed for that of undissolved rubber, so further chemical characterization was conducted to estimate its mechanical evolution. The results indicated that the aging of AR is a process in which internal multiphase structures changed simultaneously with mechanical properties. All subphases became stiffer but their influences on the overall mechanical property of AR variated after aging.

Temperature-dependent dynamic properties of magnetorheological gel composite: experiment and modeling

Of all the smart materials that can vary with a change in external excitation, magnetorheological gel (MRG) is one of the most pre-eminent composites, having controllable and reversible responses according to the magnitude of the external magnetic field. Temperature has been identified as another important driver that can alter the dynamic properties of a MRG, and so far this has not been studied systematically. The temperature-dependent dynamic properties of a MRG under different magnetic field strengths were investigated by three kinds of experiments—strain amplitude, frequency and magnetic field sweep tests. The experimental results demonstrate that the storage and loss moduli of MRGs display a temperature-induced stiffening effect with a magnetic field but a temperature-induced softening effect in the absence of a magnetic field. The storage modulus improves with magnetic field strength, whereas the loss modulus first shows rapid growth and then a gradual reduction with increasing magnetic field strength. This temperature dependence of dynamic properties is also interpreted through different mechanisms related to the transformation of the MRG microstructure. Furthermore, a modified magnetic dipole model which could predict the relationship between storage modulus and magnetic field strength is combined with the classical Arrhenius equation expressing the effect of temperature on viscosity to describe the temperature dependence of the storage modulus of a MRG under different magnetic field strengths. This paper may provide some useful guidance for designing a magnetorheological device.

Processing and Characterization of Bioplastics from the Invasive Seaweed Rugulopteryx okamurae.

The seaweed Rugulopteryx okamurae, from the Pacific Ocean, is considered an invasive species in the Mediterranean Sea. In this work, the use of this seaweed is proposed for the development of bio-based plastic materials (bioplastics) as a possible solution to the pollution produced by the plastic industry. The raw seaweed Rugulopteryx okamurae was firstly blended with glycerol (ratios: 50/50, 60/40 and 70/30), and subsequently, they were processed by injection molding at a mold temperature of 90, 120 and 150 °C. The rheological properties (frequency sweep tests and temperature ramp tests) were obtained for blends before and after processing by injection molding. The functional properties of the bioplastics were determined by the water uptake capacity (WUC) values and further scanning electron microscopy (SEM). The results obtained indicated that E’ was always greater than E”, which implies a predominantly elastic behavior. The 70/30 ratio presents higher values for both the viscoelastic moduli and tensile properties than the rest of the systems (186.53 ± 22.80 MPa and 2.61 ± 0.51 MPa, respectively). The WUC decreased with the increase in seaweed in the mixture, ranging from 262% for the 50/50 ratio to 181% for the 70/30 ratio. When carrying out the study on molded bioplastic 70/30 at different temperatures, the seaweed content did not exert a remarkable influence on the final properties of the bioplastics obtained. Thus, this invasive species could be used as raw material for the manufacture of environmentally friendly materials processed by injection molding, with several applications such as food packaging, control–release, etc.