Phenylene Sulfide Research Articles

Photoinduced Rayleigh Light Scattering by Hyperbranched Poly(phenylene sulfide) Solutions: A Model for a Light Scattering Switch

Photoinduced Rayleigh Light Scattering by Hyperbranched Poly(phenylene sulfide) Solutions: A Model for a Light Scattering Switch

End-of-life carbon fiber/poly(phenylene sulfide) semipreg scraps from the aerospace industry: Towards a sustainable product

End-of-Life (EoL) carbon fiber (CF)/poly(phenylene sulfide) (PPS) semipreg scraps from the aerospace industry were used for the development of new products. The scraps were cut and placed randomly in aluminum molds, with and without continuous layers of semipreg, to obtain five different laminates processed by hot compression molding. The laminates were inspected by ultrasound, followed by cutting standardized test specimens using a CNC machine. Afterward, the laminates were evaluated for thermal (differential scanning calorimetry, DSC) and mechanical properties (tensile test and interlaminar shear strength, ILSS). The morphological characteristics of fracture surfaces were evaluated by scanning electron microscopy, SEM, and optical microscopy, OM. Ultrasound inspection indicated that four laminates showed the presence of voids, flaws, defects, and internal discontinuities, some very pronounced. However, the five laminates processed did not show differences in thermal stability. The size of the scraps and the direction of the CF contributed unintentionally so that two laminates presented tensile strength values 15 % lower than the reference laminate (822 MPa) and ILSS values (64 MPa) very close to the reference. The micrographs showed the ordering and positioning of the CF/PPS semipreg layers. The results were promising and could be considered as resources for developing new products through recycling processes.

Tensile behavior of angle ply carbon reinforced PPS laminates under severe thermal aggressions: Homogeneous and heterogeneous temperature conditions

AbstractThis study explores the effects of critical temperature conditions on carbon fiber‐reinforced Poly Phenylene Sulfide (PPS) laminates, focusing on the coupling between thermal and mechanical behaviors. The thermo‐mechanical behavior of angle‐ply laminates is examined under both homogeneous (thermal decomposition and deformation/damage) and heterogeneous (fire) conditions following three primary objectives: (i) Investigate the impact of temperature distribution on the formation of porosities within the composite, considering their significance in thermal transfer and stress concentration—(ii) Evaluate the changes in residual mechanical behavior and properties under tension due to thermally‐induced damage—(iii) Improve the understanding of the interactions between severe thermal exposures and the mechanical behavior. X‐ray tomographic analyses and tensile tests were conducted to achieve these goals. Porosities resulting from thermal damage are identified as a key factor affecting the structural integrity of C/PPS laminates for high‐temperature applications. Mechanical testing reveals that the porosity content significantly reduces the tensile properties (axial stiffness and strength). Under homogeneous temperature conditions, the decrease in the tensile properties is significant up to Tonset (465°C) from which both the axial strength and stiffness dramatically decrease by −75 and −50%, respectively. As exposed to a kerosene flame during 60 s, corresponding to an aggression of 115 kW/m2 on one face of the laminates, the retention of the residual tensile properties remains good (−12% and −22% in stiffness and strength respectively), despite the dramatic decomposition of the polymer matrix. This can be explained from the stress redistribution from the exposed to the back face, and from the role of thermal insulator played by porosities.Highlights Carbon fibers/PPS laminates were subjected to severe thermal aggressions The formation of thermally‐induced porosities is studied A homogeneous aggression significantly decrease the tensile properties (−75%) Once the PPS matrix is severely decomposed, the load transfer is not possible After a 60 s flame exposure, the retention of tensile properties is good (−20%)

Analysis of temperature rise of low temperature adiabatic oxidation of sulfur-containing “coal-like substances”

ABSTRACT Spontaneous combustion of coal is one of the main natural disasters in the process of coal mining, and spontaneous combustion of sulfur-containing coal is an urgent problem to be solved. In order to understand the influence of different sulfur structures and sulfur content on spontaneous combustion tendency of coal, the self-developed synchronous temperature compensation adiabatic oxidation experiment system was used to study the oxidation self-heating performance of a series of sulfur-containing “coal-like materials.” Through the analysis of the heating rate of coal containing specific sulfur structure, it is considered that the time of adiabatic oxidation temperature of different organic sulfur “coal” to rise to 70°C is dimethyl sulfoxide > phenylene sulfide > dibenzothiophene. By analyzing the oxidation temperature rise characteristics of organic sulfur models with different sulfur contents, it is believed that the higher sulfur content, the faster the low temperature oxidation reaction of “coal-like substance,” the faster the temperature rise rate, and the shorter the time to reach the uncontrollable self-heating temperature, so the shorter the spontaneous combustion period. In general, in the stage of low temperature oxidation, active sulfur containing small molecules (dimethyl sulfoxide) promote the oxidation temperature rise, stable structure, larger molecular weight of dibenzothiophene slow down the “coal-like” oxidation temperature rise.

Rigid-flexible coupling poly (phenylene sulfide) fiber membrane: a highly stable chemical and thermal material for energy and environmental applications

The poly (phenylene sulfide) (PPS) fiber membrane is composed of interwoven fibers, with a three-dimensional porous structure. The three-dimensional porous structure makes PPS fiber membranes have high porosity and large specific surface area, which stands out in the field of membrane separation. A PPS fiber is a high-performance fiber with excellent chemical and thermal stability. These characteristics allow PPS fiber membranes to be used in harsh membrane separation environments such as strong acids, alkalis, and high temperatures. However, the corrosion resistance and high-temperature stability of PPS fibers also make the preparation of PPS fibers and their membranes challenging. In this paper, the preparation method is summarized, including two direct methods to make a PPS fiber membrane: melt-blown spinning and melt electrostatic spinning, and two indirect methods: wet papermaking and weaving. Additionally, the applications of PPS fiber membranes are summarized in detail in energy and environmental fields, such as lithium-ion batteries, alkaline water electrolysis, air filtrations, chemical catalyst substrates, and oil-water separations. This review provides an insightful understanding of PPS fiber membrane preparation methods and the interconnections between these preparation methods and specific applications, thus laying a solid foundation for further advancing the range of PPS fiber membrane applications.

About the influence of high temperature or fire testing conditions on the tensile behavior of carbon reinforced poly phenylene sulfide laminates

This study aims to investigate the thermo-mechanical coupling in carbon fibers reinforced Poly Phenylene Sulfide (PPS) laminates subjected to critical temperature conditions. In order to dissociate the physical phenomena (degradation/decomposition on the one hand and deformation/damage mechanisms on the other hand) at play in quasi-isotropic laminates (fiber-dominated mechanical behavior), homogenous and fire testing conditions (heterogenous) were considered with or without mechanical loading. X-Ray tomographic and fractographic analyses were conducted to identify the role played by porosities formation (resulting from thermally induced deformations and damages) on the structural bearing capabilities of C/PPS laminates to be used in high-temperature environments. Under high temperature conditions (homogenous temperature distribution), the retention of tensile properties is not well preserved as the axial stiffness and strength decrease of 50% and 75%, respectively. Under fire conditions (heterogenous temperature distribution), the degradation of tensile properties is more dramatic with an 80% decrease.

Additive Manufacturing of Poly(phenylene Sulfide) Aerogels via Simultaneous Material Extrusion and Thermally Induced Phase Separation.

Additive manufacturing (AM) of aerogels increases the achievable geometric complexity, and affords fabrication of hierarchically porous structures. In this work, a custom heated material extrusion (MEX) device prints aerogels of poly(phenylene sulfide) (PPS), an engineering thermoplastic, via in situ thermally induced phase separation (TIPS). First, pre-prepared solid gel inks are dissolved at high temperatures in the heated extruder barrel to form a homogeneous polymer solution. Solutions are then extruded onto a room-temperature substrate, where printed roads maintain their bead shape and rapidly solidify via TIPS, thus enabling layer-wise MEX AM. Printed gels are converted to aerogels via postprocessing solvent exchange and freeze-drying. This work explores the effect of ink composition on printed aerogel morphology and thermomechanical properties. Scanning electron microscopy micrographs reveal complex hierarchical microstructures that are compositionally dependent. Printed aerogels demonstrate tailorable porosities (50.0-74.8%) and densities (0.345-0.684g cm-3), which align well with cast aerogel analogs. Differential scanning calorimetry thermograms indicate printed aerogels are highly crystalline (≈43%), suggesting that printing does not inhibit the solidification process occurring during TIPS (polymer crystallization). Uniaxial compression testing reveals that compositionally dependent microstructure governs aerogel mechanical behavior, with compressive moduli ranging from 33.0 to 106.5MPa.

Study of the influence of PPS, PAEK, and PEEK thermoplastic matrices on the static mechanical behavior of carbon fiber‐reinforced composites

AbstractThe growing use of poly(phenylene sulfide) (PPS), poly(aryl ether ketone) (PAEK), and poly(ether ether ketone) (PEEK) polymers reinforced with carbon fiber (CF) aims to meet the increasing demand for structural thermoplastic composites in applications that require excellent mechanical properties and thermal stability at higher temperatures (for example, above 120°C). The present work studied the influence of semicrystalline thermoplastic matrices of PPS, PAEK, and PEEK on the static mechanical behavior of CF‐reinforced composites through tensile tests and fractographic analysis of the respective fracture surfaces. The results of mechanical tests showed that the matrix influenced the static properties of the composites, mainly in stiffness, highlighting the CF/PEEK composite with the highest stiffness (42.3 ± 0.5 GPa) and the CF/PPS with the lowest standard deviation in tensile strength (599 ± 12 MPa). The fractographic analyses showed the good quality of the laminates, which presented an excellent matrix‐reinforcement interface, without fiber detachment or pulling out after mechanical tests, guaranteeing the transfer of efforts from the matrix to the reinforcement.Highlights Static mechanical behavior of structural composites with thermoplastic matrix. Static tensile tests of CF/PPS, CF/PEEK, and CF/PAEK composites were performed. Influence of semicrystalline matrices on the mechanical behavior of composites. Mechanical behavior of CF‐reinforced composites with PEEK, PAEK, and PPS. Fractographic analyses of the fracture surfaces of thermoplastic composites.

Improving film adhesive joining performance of poly(phenylene sulfide)/carbon fiber thermoplastic composite laminates by plasma surface treatment

The main purpose of this study was to observe the degree of the improvement on the film adhesive joining performance of Poly(phenylene sulfide)/Carbon Fiber (PPS/CF) thermoplastic composite laminates when their surfaces were treated by atmospheric plasma technique. For this purpose, plasma treated surfaces were compared with untreated and the traditional grit-blasted surfaces. Treated surfaces were characterized by various techniques including contact angle, surface energy, surface roughness, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses. Then, joining performance of the PPS/CF composite samples bonded by an epoxy-based film adhesive was determined by using three different mechanical tests; single-lap shear strength, mode-I interlaminar fracture toughness energy, and drop-weight impact toughness. Grit-blasting surface treatment increased surface roughness of the specimens enormously (7 times more), leading to mechanical interlocking as the dominant bonding mechanism. Contrarily, plasma surface treatment resulted in formation of chemically reactive sites, thus dominant bonding mechanisms in the film adhesive joining were certain polar interactions and chemical bonding. Mechanical tests pointed out that compared to grit-blasting, plasma surface treatment resulted in considerably higher joint performance regarding interlaminar shear strength (35% more), interlaminar fracture toughness (67% more) and impact toughness (28% more), with the cohesive failure mode. Accordingly, it could be stated that traditional grit-blasting could be replaced with plasma surface treatment applied before film adhesive joining of PPS/CF composite parts in aircraft industry.

Effect of calcium pimelate on crystallization kinetics of polyphenylene sulfide

AbstractThe use of nucleating agents (NAs) to accelerate semicrystalline polymers crystallization is a widely recognized technique during processing. However, the commercially available NA for poly(phenylene sulfide) (PPS) has been rather limited. In this work, it is found that calcium pimelate (CaPim), a commercial nucleating agent for isotactic polypropylene, could also accelerate the crystallization process of PPS. The influence of CaPim addition on the crystallization behaviors of PPS was investigated under non‐isothermal and isothermal condition. Upon the addition of 0.3 wt% CaPim, the crystallization peak temperature and the onset crystallization temperature increases by 5.3 and 8.4°C at 10°C/min cooling rate, and the half‐time of crystallization reduces 51% at crystallization temperature of 272°C. Polarized optical observation revealed a substantial enhancement in nucleation due to the presence of CaPim. Avrami equation analysis suggested that the nucleating agent significantly increased the crystallization rate constant without affecting the growth dimension. Moreover, Lauritzen–Hoffman theory analysis indicateed that the addition of CaPim lowers the nucleation energy barrier, contributing to its high‐nucleation efficiency. These findings demonstrate that calcium pimelate holds promise as an effective nucleating agent for PPS.

Effect of Cooling Temperature on Crystalline Behavior of Polyphenylene Sulfide/Glass Fiber Composites.

Poly (phenylene sulfide) (PPS) is a super engineering plastic that has not only excellent rigidity and high chemical resistance but also excellent electrical insulation properties; therefore, it can be applied as an electronic cover or an overheating prevention component. This plastic has been extensively applied in the manufacture of capacitor housing as, in addition to being a functional and lightweight material, it has a safety feature that can block the electrical connection between the electrolyte inside and outside the capacitor. Moreover, the fabrication of PPS composites with high glass fiber (GF) content facilitates the development of lightweight and excellent future materials, which widens the scope of the application of this polymer. However, the crystallinity and mechanical properties of PPS/GF composites have been found to vary depending on the cooling temperature. Although extensive studies have been conducted on the influence of cooling temperature on the crystalline behavior of PPS-based composites, there has been limited research focused particularly on PPS/GF composites for capacitor housing applications. In this study, to apply PPS/GF composites as film capacitor housings, specimens were prepared via injection molding at different cooling temperatures to investigate the composites' tensile, flexural, and impact energy absorption properties resulting in increases in mechanical properties at high cooling mold temperature. Fracture surface analysis was also performed on the fractured specimens after the impact test to confirm the orientation of the GF and the shape of the micropores. Finally, the crystallinity of the composites increased with higher cooling temperatures due to the extended crystallization time.

Influences of laser and plasma surface treatments on the primer paint adhesion for PPS/CF thermoplastic composite laminates

For Poly(phenylene sulfide)/Carbon Fiber (PPS/CF) thermoplastic composite laminates, the main purpose of this study was to evaluate effects of “laser” and “plasma” surface treatments on the adhesion performance of primer painting by comparing with “untreated” and traditional “sandblasted” samples. For this purpose, after surface characterization of untreated and treated samples by Wettability, SEM, Surface Roughness, XPS and FTIR analyses; adhesion characteristics of an industrial primer paint applied onto PPS/CF surfaces were evaluated by using two different industrial methods: “Cross-cut Adhesion” tests and “Three-point Bending Adhesion” tests. Compared to the Untreated samples, it was observed that all surface treated samples could be assigned with the “best” primer adhesion grade of GT0. Moreover, surface treated samples had at least two times more maximum “Separation Load” with “cohesive” separation mechanism of primer paint layers. The success of the Sandblasted samples was due to efficient mechanical interlocking mechanism. For the Laser treated samples, adhesion performance was partly due to the mechanical interlocking and partly due to the chemical interactions; while for the Plasma treated samples it was mainly chemical bonding mechanism.

Improving Mechanical and Barrier Properties of Antibacterial Poly(Phenylene Sulfide) Nanocomposites Reinforced with Nano Zinc Oxide-Decorated Graphene

Nano zinc oxide-decorated graphene (G-ZnO) was blended with polyphenylene sulfide (PPS) to improve its tensile, thermal, crystalline, and barrier properties. The properties of neat PPS and PPS/G-ZnO nanocomposites were characterized and compared using various tests, including tensile tests, scanning electron microscopy, X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, evaluation of Escherichia coli inhibition, and barrier performance. The results demonstrated that G-ZnO played a crucial role in heterogeneous nucleation and reinforcement. When the concentration of G-ZnO was 0.3%, the tensile strength, elongation at break, thermostability, crystallinity, and water vapor permeability coefficients (WVPC) approached their maximum values, and the microscopic morphology changed from the original brittle fracture to a relatively tough fracture. In addition, when G-ZnO was added to PPS at a ratio of 0.3%, the tensile strength, elongation at break, and WVPC of PPS were increased by 129%, 150%, and 283%, respectively, compared to pure PPS. G-ZnO endowed the nanocomposites with antibacterial properties. The improvement in barrier performance can be attributed to three reasons: (1) the presence of G-ZnO extended the penetration path of molecules; (2) the coordination and hydrogen bonds between PPS polymer matrix and G-ZnO nanofiller narrowed the H2O transmission path; and (3) due to its more hydrophobic surface, water molecules were less likely to enter the interior of PPS/G-ZnO nanocomposites. This study provides valuable insights for developing high-performance PPS-based nanocomposites for various applications.

Enhancement of torque density and power density of polymer-based ultrasonic motors via flexible usage of anisotropy in elastic property

The carbon-fiber-reinforced poly phenylene sulfide (PPS/CF), which exhibits low density, low energy dissipation, and relatively high elastic modulus among polymers, is a promising material as the vibrating body of lightweight ultrasonic motors (USMs). Interestingly, the flexible usage of the anisotropy in PPS/CF’s elastic property (induced by carbon fibers’ reinforcement) offers a new idea to enhance the torque densities and power densities of the polymer-based USMs. As the key issue of flexibly using the anisotropy, this study aims to accomplish the optimal arrangement of the carbon-fibers’ filling direction according to the structure, the vibration mode, and the piezoelectric material’s polarization direction of the PPS/CF-based motor by performing model construction, structural optimization, and experimental verification. Initially, the dynamic model capable of setting PPS/CF’s anisotropically elastic moduli with the changeable filling direction is established to analyze the vibration characteristics. Subsequently, to increase the vibration velocity, the stiffness, and the electromechanical coupling factors, the optimization is carried out for the PPS/CF-based ring-shaped vibrators, where the optimal angle between the filling direction and the vibrator’s bottom surface is estimated as 60°. Finally, a prototype of the PPS/CF-based vibrator 30 mm in diameter and 8.5 mm in height is fabricated to form a rotary motor, whose movement and load characteristics are investigated through experiments. At 250 V voltage and 24.42 kHz frequency, the motor yields the no-load rotation speed, the maximal torque, and the maximal output power of 99.3 r min−1, 29.8 mNm, and 72 mW, respectively. Moreover, its torque density and power density reach respectively 7.1 Nm kg−1 and 17.1 W kg−1, relatively high among the rotary motors with polymer vibrating bodies. This study validates the effectiveness of our idea and also provides a basic approach to design lightweight USMs that employ newly-developed materials with anisotropically elastic properties and good vibration characteristics.

Sulfur-Containing Persistent Free Radicals and Reactive Species on Photoaged Microplastics: Identification and the Formation Mechanism.

The elemental composition may affect the persistent free radical (PFR) and reactive species (RS) formation associated with photoaging microplastics; however, a relevant study is still lacking. This study systematically investigated the formation, evolution, and types of PFRs and RS on sulfur-containing microplastics (S-MPs) under simulated sunlight. Electron paramagnetic resonance detection and power saturation curve analysis isolated three different PFRs on each photoaging poly(phenylene sulfide) (PPS) and polysulfone (PSF). Combining the results of characterization and density functional theory calculation, these observed PFRs on the irradiated S-MPs were classified as oxygen-centered radicals with an adjacent S atom (namely, thio-oxygen radicals), oxygen-centered and sulfur-centered radicals, where the thio-oxygen radicals on PPS were benzenethiol-like radicals, and oxygen-centered radicals and sulfur-centered radicals on PSF that were identified as benzenesulfonic-like radicals and phenyl sulfonyl-like radicals, respectively. Moreover, potential precursor molecule fragments of PFRs on the photoaging S-MPs, including p-toluenesulfinic acid and benzenesulfonic acid, were detected by pyrolysis-gas chromatography/mass spectrometry and liquid chromatography-mass spectrometry. Interestingly, reactive sulfur species (SO3•-) was also observed on irradiated S-MPs in addition to reactive oxygen species, which was mainly derived from the reaction of •OH and sulfonyl radicals. These results have implications for assessing the potential risks of atmospheric S-MPs.

Phosphor thermometry for surface temperature measurements of composite materials during fire test

This study presents the implementation of phosphor thermometry method to obtain pointwise surface temperature measurements of a carbon fibers reinforced polymers composite exposed to a flame. Phosphor thermometry has previously been used to measure surface temperature in relevant applications, mainly on metallic materials. In the present study, it has been applied to measure the backside temperature of a carbon fiber Poly Phenylene Sulfide (PPS) polymer composite exposed to a flame, in order to analyze the feasibility, the limits and the advantages of the method compared to infrared thermography. Mg4FGeO6:Mn4+ thermographic phosphor is coated on the back side of the composite sample and excited with a 10 Hz repetition rate Nd:YAG laser at 355 nm. The time-resolved phosphorescence signals are processed with the lifetime approach to determine the temperature. A coating of small thickness allows the surface temperature to be measured up to 400 °C, and it is shown that this coating has no effect on the heat exchange at the surface. The comparison between the phosphor thermometry results with the ones obtained with an infrared camera shows an interesting methodology to determine the infrared emissivity of the sample at high temperature.

Antifouling poly(phenylene sulfide) membrane with an amphiphilic surface for efficient oil/water separation

Poly(phenylene sulfide) (PPS)-based membranes hold great promise in the disposal of oily wastewater. However, their inherent lipophilic chemical structure and the pronounced concentration polarization effect will lead to serious fouling during operation. Herein, a PPS membrane with an amphiphilic surface (aPPS) is designed and fabricated by assembling phytic acid (PA) and perfluorohexanoic acid (PFHA) on the PPS membrane to obtain a superior antifouling property. PFHA as the hydrophobic domains are dispersed on a continuous hydrophilic PA layer at a molecular scale, which achieves the decrease of apparent surface energy with preserving the underwater superoleophobicity. Owing to the low intermolecular interaction and small contact area with oil, the amphiphilic surface exhibits nearly zero adhesion force towards oil, and accordingly, the aPPS membrane shows a low flux decline ratio (<15%), a high flux recovery ratio (∼100%) at high permeance (∼4100 L m−2 h−1 bar−1) and desired oil rejection (>98%). Moreover, the aPPS membrane exhibits stability under pH 3–11 and the temperature from ambient temperature to 80 °C, which demonstrates a promising potential for the practical separation of oil/water emulsions.

Discovery of urea-based pleuromutilin derivatives as potent gram-positive antibacterial agents

There is an urgent need to discover new antibacterial drugs and provide new treatment options for clinical antimicrobial resistance (AMR) pathogen infections. Inspired by the structural insights from analyzing the co-crystal structure of lefamulin with the ribosomes of S. aureus, a series of novel pleuromutilin derivatives of phenylene sulfide incorporated with urea moiety were designed and synthesized. The structure–activity relationship (SAR) study revealed that derivatives with urea in the meta position of phenylene sulfide had optimal antibacterial activities in vitro. Among them, 21h was the most potent one against Methicillin-resistant Staphylococcus aureus (MRSA) and clinical AMR Gram-positive bacteria with minimum inhibitory concentrations (MICs) in the range of 0.00195–0.250 μg/mL. And it possessed low resistance frequency, prolonged Post-Antibiotic Effect and the capability to overcome lefamulin-induced resistance. Furthermore, 21h exhibited potent antibacterial activity in vivo in both the thigh infection model and trauma infection model, representing a promising lead for the development of new antibiotics against Gram-positive pathogens, especially for AMR bacteria.

Supramolecular Cross-Linking of Thiophenylene Polymers via Multiple Hydrogen Bonds toward High Refractive Index

Dihydroxy-substituted poly(phenylene sulfide) (DOHPPS) was synthesized via oxidative polymerization of bis(2,6-dimethoxyphenyl) disulfide and subsequent deprotection. The synergistic effect of multiple-hydrogen-bond cross-links and the rigidity of the thiophenylene backbone afforded dense yet amorphous supramolecular networks, resulting in a polymer with visible transparency and an ultrahigh refractive index (nD = 1.85).

Mechanical properties of carbon fiber/PPS laminates processed by hot compression molding under different consolidation cycles

AbstractHigh‐performance thermoplastic composites based on semipregs of poly(phenylene sulfide) (PPS) reinforced with carbon fiber (CF) have been widely used in the aerospace industry due to their excellent mechanical properties and thermal stability. In this work, CF/PPS laminates were processed by hot compression molding. The processing parameters (pressure and temperature of processing) were investigated as well as the effect of the number of semipreg layers. The neat PPS matrix and CF/PPS semipreg were evaluated by rheological and thermal properties, respectively, to verify the best processing temperature for the CF/PPS composite laminates. The CF/PPS laminates obtained were inspected by ultrasound and differential scanning calorimetry analyses, and then the standardized specimens were prepared. The mechanical properties were evaluated by tensile test and interlaminar shear strength (ILSS) tests. Morphological characteristics of fracture surfaces also were analyzed by scanning electron microscopy. The ultrasound inspections showed differences among the processed laminates with the presence of defects mainly around the edges of samples. Based on ultrasound maps, the worst regions of laminates were discharged and not used to cut the specimens utilized in the mechanical characterization. Thermal, mechanical, and morphological analyses of the six laminates processed with different consolidation cycles did not show significant differences, showing good CF‐PPS matrix interface and similar results of crystallization (~23%), tensile strength (776–858 MPa), and ILSS (59–68 MPa).