Shape Fixity Ratio Research Articles

Four-dimensional printing of continuous glass fiber-reinforced thermoplastics

Shape memory polymers (SMPs) are a new class of materials in which their shapes can be changed over time. Despite their lightness and ease of fabrication, SMPs have very low recovery forces and are therefore inefficient when high loads are applied. To improve the mechanical properties of polymeric materials, glass fiber (GF) is commonly used as a reinforcement. The purpose of this study was to demonstrate a four-dimensional (4D) printing process using material extrusion additive manufacturing on both polylactic acid (PLA) and thermoplastic polyurethane (TPU). The goal was to improve the recovery forces in SMPs. GF roving was fed continuously into the nozzle of a three-dimensional (3D) printer to fabricate composite specimens. Also, multi-layer PLA/TPU specimens were printed. There was a measurement of shape fixity, shape recovery, and force recovery ratios. A multi-objective function analysis was performed to determine the optimum material based on recovery force priority in this study. In terms of recovery force, GF showed a superior effect. For composite specimens, shape fixity and recovery ratios decreased and increased, respectively. According to the result of optimization, PLA with 6.62 % GF proved to be the best material. PLA's recovery force has been improved by annealing heat treatment. Furthermore, cyclic experiments up to three cycles were conducted to evaluate the performance of the optimum material.

Structure-tunable polyether block amide/polylactic acid foams with shape memory performance using supercritical CO2 foaming

Lightweight and structure-tunable shape memory polyether block amide (PEBA)/polylactic acid (PLA) foams were prepared using an efficient, green microcellular foaming technology. PLA is conducive to increasing the shape fixing ratio of PEBA/PLA, whereas PEBA is favorable for enhancing the shape recovery ratio. The shape memory performance and mechanical properties of PEBA/PLA foams can be modified by adjusting the expansion ratio and cellular structure. When the blend ratio of PEBA/PLA is 80/20, the expansion ratio above 6.4 can enhance both the shape fixing ratio and the shape recovery ratio. A cell size of 23.3–43.6 µm significantly improves the shape fixing ratio, while a cell size of 7.0–10.4 µm is advantageous for enhancing the shape recovery ratio. PEBA/PLA foams have a density of 0.17 g/cm3 and shape memory properties with a shape fixing ratio of 87.2% and shape recovery ratio of 90.5%.

Hybrid hemp/glass fiber reinforced high-temperature shape memory photopolymer with mechanical and flame-retardant analysis

Cultivated natural fibers have a huge possibility for green and sustainable reinforcement for polymers, but their limited load-bearing ability and flammability prevent them from wide applications in composites. According to the beam theory, normal stress is the maximum at the outermost layers but zero at the mid-plane under bending (with (non)linear strain distribution). Shear stress is the maximum at the mid-plane but manageable for most polymers. Accordingly, a laminated composite made of hybrid fiber-reinforced shape memory photopolymer was developed, incorporating strong synthetic glass fibers over a weak core of natural hemp fibers. Even with a significant proportion of natural hemp fibers, the mechanical properties of the hybrid composites were close to those reinforced solely with glass fibers. The composites exhibited good shape memory properties, with at least 52% shape fixity ratio and 71% shape recovery ratio, and 24 MPa recovery stress. After 40 s burning, a hybrid composite still maintained 83.53% of its load carrying capacity. Therefore, in addition to largely maintaining the load carrying capacity through the hybrid reinforcement design, the use of shape memory photopolymer endowed a couple of new functionalities to the composites: the plastically deformed laminated composite beam can largely return to its original shape due to the shape memory effect of the polymer matrix, and the flame retardancy of the polymer matrix makes the flammable hemp fiber survive the fire hazard. The findings of this study present exciting prospects for utilizing low-strength and flammable natural fibers in multifunctional load-bearing composites that possess both flame retardancy and shape memory properties.

Photo‐activated shape memory polymer with chiral twisting based on anisotropic bilayer thin sheets

AbstractThe remotely controlled shape memory behaviors of a two‐dimensional (2D) sheet to controlled helix structure upon external stimuli is of great significance in the field of smart materials. Herein, we devise a strategy to fabricate a series of shape memory polycaprolactone/W18O49 nanowire film via highly efficient UV‐triggered thiol‐acrylate click chemistry. The resultant polymer composites exhibited desirable photothermal transfer efficiency and can enable rapid temperature increase over the melting temperature of polymeric matrix, thus remotely actuating shape transformation within 8 s. Owing to the well‐defined architecture of the polymer network, the fabricated elastic composite film exhibited a high degree of crystallinity and showed excellent shape memory properties with Rf of 93.12% and Rr of 95.32%. Remarkably, under a 160 mW/cm2 simulated sunlight illumination, the transformation of flat 2D film into 3D chiral actuators is driven by designing anisotropic bilayer thin sheet, and it yields right‐ and left‐handed helix. This work will pave the way for designing biomimetic flexible actuators toward multifunctional shape‐shifting devices.Highlights Shape memory polycaprolactone/W18O49 nanowires composite film is fabricated via UV‐triggered thiol‐ene click chemistry. Polymer composites exhibit light‐activated shape memory behaviors. The composite films show excellent shape fixity and shape recovery ratio based on the well‐defined network. The shape morphing behaviors of a flexible 2D bilayer strip into 3D chiral actuators are achieved.

Development and characterization of thermal and electro-active shape memory polymer composites using polyester fabric to obtain a large bending effect

In this work, thermally active (TA) and electro-active (EA) shape memory polymer composites (SMPCs) were prepared. The recycled polyester fabric (RPF) with three different areal weights (low, medium, and high) was used as a reinforcement to get a large bending effect in SMPC, due to its low rigidity. The TA-SMPCs were fabricated by hand layup, while unidirectional (UD) carbon tow inserts were used between two layers of polyester fabric for EA-SMPCs. The shape memory (SM) and shape recovery (SR) capability of all TA-SMPCS were investigated at different temperatures (50°, 75°, and 100 °C). Whereas the EA-SMPCs were investigated at 50 °C. The maximum achieved SR and shape fixity ratios of developed TA-SMPCs were 100 % and 99 %, respectively. The EA-SMPCs also showed 100 % SR ratios. The surface morphology of the developed composites was studied using an optical microscope. Delamination was observed in 3-layered TA-SMPCs and EA-SMPCs at 50 °C after cyclic loading when prepared with higher areal-weight fabrics.

Colorless, transparent, and shape memory polyurethane networks with high strength and recyclability

AbstractThe traditional thermoset polyurethanes (PUs) can be recycled through the dynamic carbamate bonds under specific conditions. However, there is limited research on the structural evolution and property changes of these PUs before and after recycling. Herein, we designed and fabricated a thermoset polyurethane network (PCU) using polyhexamethylene carbonate diol (PHMC‐diol) as soft segments, and isophorone diisocyanate (IPDI) and glycerol (GLY) as hard segments. Through careful formulation design, the PCU demonstrated colorless transparency (with up to 86% transmission), shape memory properties, and reprocessing capabilities, all achieved without introducing other dynamic covalent bonds. Furthermore, the PCU exhibited excellent mechanical properties, boasting a tensile strength of 59.2 ± 3.7 MPa and the elongation at break of 674.8 ± 37.3%. Of particular interest, the PCU samples displayed solid‐state plasticity and impressive shape memory performance, with shape fixity and recovery ratios exceeding 90%. Leveraging the combination of solid‐state plasticity and shape memory, the PCU samples demonstrated the ability to achieve arbitrary shape manipulations. Upon recycling, it was observed that the cross‐linking density of the PCU samples decreased, resulting in the formation of byproducts and subsequently leading to a reduction in tensile strength. Nonetheless, the PCU samples prepared in this study exhibit potential as thermadapt shape memory and recyclable materials.

Design and properties of shape memory sports bras for comfortable pressure based on ergonomics

To improve the difficulty in wearing and uncomfortable pressure of the sports bra, shape memory polyurethane filaments (SMPUFs) were used to prepare seamless sports bras in this study. Five fabric samples with different stitch structures and yarn were prepared. Then shape memory sports bras were designed based on the properties of the different fabric samples and female body characteristics. SMPUFs were characterized by differential scanning calorimetry for the thermal properties. Shape memory properties and mechanical properties of the SMPUFs, covered yarn and fabric samples were measured. Besides this, the moisture absorbency, permeability and thermal resistance of fabrics were tested. A pressure test system was set up and the pressure of the sports bras was investigated at different temperatures. The results showed that the transition temperature ( Ttrans) of the SMPUF was 27.33°C, which could be triggered by human skin temperature. The best shape fixity ratio of the fabric sample was 82.5% and the shape recovery ratio was 94.4%. The comfortable pressure of the shape memory sports bra at the mean human skin temperature of 34°C was 1.6–5.6 kPa.

Shape memory effect in cross-linked polyethylene matrix composites: the effect of the type of reinforcing fiber

The recovery stress of shape-memory polymers is often low; therefore their field of application is limited. In this study, we compared the effects of different fiber reinforcements on the shape memory characteristics of cross-linked polyethylene (X-PE) matrix. We used fiber reinforcement to increase the recovery stress of the shape memory polymer and compared the results of different fiber reinforcements to find the ones that confer the best shape memory properties. We investigated glass, carbon, Kevlar®, and Dyneema® fibers to find the fibers that increase the recovery stress of the composites most. The deformed shape was created by three-point bending, and then heat-activated shape recovery was examined. All reinforcements increased the recovery stress and decreased the shape fixity ratio and the shape recovery ratio. The samples had similar characteristics, except for the low recovery stress Kevlar® fibers and the low recovery ratio of the composite reinforced with glass fibers. With the polyethylene Dyneema® fibers, the composite was self-reinforced and did very well by all metrics. They increased the maximum recovery stress from 0.3 to 2.4 MPa, through having excellent adhesion to the matrix and high strength in their own right. Our research proved that self-reinforced composites could measure up to conventional composites in shape memory applications. Aside from the Dyneema® fibers carbon fibers work best in the X-PE matrix, and should be the preferred conventional reinforcement materials.

Investigation of Multiple Shape Memory Behaviors, Thermal and Physical Properties of Benzoxazine Blended with Diamino Polysiloxane.

In this research, benzoxazine (BA-a) and diamino polysiloxane (PSX750) blends were prepared at 0-50 wt% of BA-a. The interactions between two polymeric components were investigated via a Fourier Transform Infrared Spectrometer (FT-IR). The thermal properties of the blends were also determined with Dynamic Mechanical Analyzer (DMA) and Thermogravimetric Analyzer (TGA). The mechanical properties and shape memory behaviors of the blends were also investigated. The FTIR spectra exhibited the shift of the peak from 1672 to the range of 1634-1637 cm-1, which could be identified as hydrogen bonds between two polymeric domains at the contents from 30 to 50 wt%. The DMA thermograms revealed two glass transition temperatures, which could indicate a partially miscible system. The char yield values were increased, while the decomposition temperatures were decreased with an increasing benzoxazine content. Interestingly, the blends at the contents of 10 and 20 wt% presented dual-shape memory behaviors, whereas triple- or multiple-shape memory behaviors were observed with benzoxazine contents of 30 to 50 wt%. For the high-temperature recovery state, a shape memory ratio of 97.5% with a recovery time of 65 s and a shape fixity ratio of 66.7% was recorded at the content of 50 wt%. For the low-temperature recovery state, a shape recovery ratio of 98.9% was observed at the same content. Moreover, the values of the recovery ratio for four shape-recovery cycles revealed multiple shape memory behaviors with high recovery ratios in the range of 95-98%.

A type of shape memory material based on ethylene-propylene-diene rubber (EPDM)/ polypropylene (PP) thermoplastic vulcanizates compatibilized by magnesium maleate

The effects of magnesium maleate (MgMA) and maleic anhydride (MAH) on the interfacial interaction and the shape memory properties of ethylene propylene diene monomer (EPDM) and polypropylene (PP) thermoplastic vulcanizate (TPV) with sea island structure prepared by dynamic vulcanization were investigated in this study. PP matrix could maintain the temporary shape of TPVs and the crosslinked EPDM phase supplied stress to drive the deformed shape recovery during the shape memory process. MgMA and MAH grafted on PP and EPDM chains verified by FTIR, DMA and SEM, which improved the interfacial compatibility of EPDM and PP and enhanced the efficiency of stress transfer in the shape memory process. The shape fixity ratio (Rf) and shape recovery ratio (Rr) of TPVs compatibilized by MgMA and MAH were almost above 80%. The shape memory property and the mechanical performance of TPVs were all improved compared to that of the sample without compatibilization.

Influence of subsequent thermomechanical cycles on shape memory behavior of 4D printed PEKK

The current study identifies and investigates the shape memory response of poly ether ketone ketone (PEKK) for the first time. 4D printed PEKK are subjected to annealing, crystalline behavior, and shape memory studies under susquent thermomechanical cycles. Scanning electron microscopy (SEM) revealed seamless bonding between the printed layers, confirming the suitability of the chosen printing parameters. Differential scanning calorimetry (DSC) results showed higher Tg (161.20 °C) and Tm (339.03 °C). Shape fixity ratio (Rf) is observed to be lower in the higher cycles (∼10% lower in cycle 8 compared to cycle 1), while the shape recovery ratio (Rr) is noted to be decreasing in each cycle ( 20% decreased in cycle 8 compared to cycle 1) due to reduction in storage modulus. The 4D printed PEKK exhibited excellent shape memory properties as compared to PEEK, making them potential materials in automotive and aerospace applications.

Reconstructed Hierarchically-Structured Keratin Fibers with Shape-Memory Features Based on Reversible Secondary Structure Transformation.

Biocompatible and biodegradable shape-memory polymers have gained popularity as smart materials, offering a wide range of applications and environmental benefits. Herein, we investigate the possibility of fabricating regenerated water-triggered shape-memory keratin fibers from wool and cellulose in a more effective and environmentally friendly manner. The regenerated keratin fibers exhibit comparable shape-memory performance to other hydration-responsive materials, with a shape fixity ratio of 94.8 ± 2.15% and a shape recovery rate of 81.4 ± 3.84%. Owing to their well-preserved secondary structure and crosslinking network, keratin fibers exhibit outstanding water-stability and wet stretchability, with a maximum tensile strain of 362 ± 15.9%. In this system, we investigate the reconfiguration of the protein secondary structure between α-helix and β-sheet as the fundamental actuation mechanism in response to hydration. This responsiveness is studied under force loading and unloading along the fiber axis. Hydrogen bonds act as the "switches" clicked by water molecules to trigger the shape-memory effect, while disulfide bonds and cellulose nanocrystals play the role of "net-points" to maintain the permanent shape of the material. Water-triggered shape-memory keratin fibers are manipulable and exhibit potential in the fabrication of textile actuators, which may be applied in smart apparel and programmable biomedical devices. This article is protected by copyright. All rights reserved.

Reconfigurable and tunable EMNa/PCL/HNTs composites integrated with rapid shape-memory and repeatable self-healing properties

Although tremendous advances in the preparation of smart materials, it remains a great challenge to integrate rapid shape-memory and repeatable self-healing properties into one material system. Herein, a composite with controllable shape memory and repeatable self-healing properties was fabricated by incorporating the halloysite nanotubes (HNTs) into polyethylene-sodium methacrylate salt (EMNa)/poly ε-caprolactone (PCL) blend via melt blending method. The dynamic cluster/de-cluster of ionic clusters in EMNa matrix endow the composite with favorable self-healing repeatability. In addition, the introduction of HNTs can not only maintain well shape memory properties, but also greatly enhancing the self-healing effect. Specifically, EMNa/PCL/HNTs-3.0 possesses a superior dual shape memory property as manifested by a 97.9% shape fixing ratio and 98.5% shape recovery ratio, which take only 8 s for recovering permanent shape. Furthermore, this self-healed composite still exhibits excellent reusability and endurance, and the shape fixity and shape recovery ratios are both above 95% after 15 shape memory cycles. More interestingly, the integration of ionomer, two independent crystallization domain, and HNTs enhanced physical cross-linked network can effectively provide EMNa/PCL/HNTs composites with triple shape memory and reconfigurable properties. This work provides a promising strategy for designing reconfigurable and tunable composites integrated with rapid shape-memory and repeatable self-healing properties, demonstrating its versatile application potential in biomedical and smart engineering materials fields.

4D printable maleated poly(styrene-b-ethylene/butylene-b-styrene) / Poly(ethylene-co-vinyl acetate) thermoplastic elastomer blends; effects of blend composition on shape memory and mechanical properties

Shape memory polymers are attracting attention in materials science with their responsive properties and their application areas are gradually developing. By adapting these materials to the additive manufacturing process, four-dimensional (4D) printing technology has been developed. In this study, novel thermo-responsive shape memory polymer blends were prepared for high temperature applications from commercially available polymers using maleated poly(styrene-b-ethylene/butylene-b-styrene) (SEBS-g-MA) and poly(ethylene-co-vinyl acetate) (EVA) and their applicability in three-dimensional (3D) printing was explored. The presence of SEBS-g-MA led to an increase in the degree of crystallization and glass transition temperature of EVA, accompanied by a decrease in crystallization temperature. As the EVA content increased, the blend morphology transitioned from droplet to co-continuous structure. Higher EVA content resulted in an increase in Young's modulus, but a decrease in tensile strength. Nevertheless, these blends exhibited exceptional elongation at break, surpassing 1200%. The blend comprising 70 wt% SEBS-g-MA and 30 wt% EVA demonstrated a synergistic effect, yielding the highest values for elastic modulus, creep resistance, and storage modulus. Furthermore, the blend with 60 wt% SEBS-g-MA and 40 wt% EVA exhibited optimal shape memory performance, achieving a shape fixing ratio of 93.1% and a shape recovery ratio of 98.7%. The conducted analyses demonstrated that the shape recovery of the produced blends could be adjusted according to temperature, and the blends were able to consistently replicate the shape memory effect across multiple cycles. A filament was manufactured for a 3D printer from the blend of 60 wt% SEBS-g-MA and 40 wt% EVA. Using this filament, 4D models having complex geometries were successfully printed. The produced models were able to maintain their temporary shapes to a significant degree. When triggered by heat, these models rapidly returned to their original shapes within a very short period.

A shape-memory poly(ε-caprolactone) hybridized TiO2/poly(l-lactide) composite with antibacterial properties

Organic-inorganic composites as an efficient strategy to upgrade the structural and functional properties of synthetic polymers are attracting extensive attentions. However, there are few studies on the shape memory (SM) behavior of organic-inorganic composites. In the work, poly(ε-caprolactone) hybridized TiO2 nanomaterial (PCL-TiO2) is made as the switching phase and integrated into poly (l-lactide) (PLLA) to construct an SM composite. PCL-TiO2/PLLA shows “sea-island” structure and better interfacial adhesion than PCL/PLLA, which facilitates the transmission of elastic power between the switching phase and the fixing phase. PCL-TiO2 as switching phase exhibits lower enthalpy at 57 °C than PCL, and PCL-TiO2 also acts as “heat dispersion pump station”, which builds a dynamically responsive system and initiates shape change. The shape fixing and recovery ratio of PCL-TiO2/PLLA are 93.9 % and 94.4 %, respectively, and go back to the original shape within 15 s at 57 °C. At the same time, PCL-TiO2 endows SMP with good antibacterial properties. Then this work provides a well-placed way for developing SM materials with structure-function integration.

Shape recovery and mechanical properties investigation of carbon fiber dispersed bisphenol-A based epoxy composite

Shape memory polymers (SMPs) are employed in a wide range of fields because to their appealing properties, which include low density, low production costs, and ease of processing. In the present work, SMP composites were developed using ultrasonic mixing of carbon fiber (CF) and amorphous epoxy to enhance the properties of epoxy and shape memory effect. The prepared composites were tested for mechanical and shape memory properties. Flexural strength and tensile strength of pristine epoxy enhanced after dispersing 1% CF which are about 12.7% and 16.2%, respectively, higher than pristine epoxy. Fracture toughness of epoxy improves after adding 1% CF which is about 94.05% higher compared to pristine epoxy. UV–vis-NIR showed reduction in energy bandgap. Shape fixity and shape recovery ratios for pristine epoxy was 98.49% and 93.40%, respectively. These ratios decrease to 90.52% and 87.86%, respectively with addition of 1.5 wt.% CF. However, recovery time improves from 57 s to 33 s with addition of 1.5 wt.% CF in epoxy. Shape recovery rate enhances with CF reinforcement in epoxy composite.

4D printing of biocompatible, hierarchically porous shape memory polymeric structures

Conventional implants tend to have significant limitations, as they are one-size-fits-all, require monitoring, and have the potential for immune rejection. However, 4D Printing presents a method to manufacture highly personalized, shape-changing, minimally invasive biomedical implants. Shape memory polymers (SMPs) with a glass transition temperature (Tg) between room and body temperature (20–38 °C) are particularly desirable for this purpose, as they can be deformed to a temporary shape before implantation, then undergo a shape change within the body. Commonly used SMPs possess either an undesirable Tg or lack the biocompatibility or mechanical properties necessary to match soft biological tissues. In this work, Poly(glycerol dodecanoate) acrylate (PGDA) with engineered pores is introduced to solve these issues. Pores are induced by porogen leaching, where microparticles are mixed with the printing ink and then are dissolved in water after 3D printing, creating a hierarchically porous texture to improve biological activity. With this method, highly complex shapes were printed, including overhanging structures, tilted structures, and a “3DBenchy”. The porous SMP has a Tg of 35.6 °C and a Young's Modulus between 0.31 and 1.22 MPa, comparable to soft tissues. A one-way shape memory effect (SME) with shape fixity and recovery ratios exceeding 98 % was also demonstrated. Cultured cells had a survival rate exceeding 90 %, demonstrating cytocompatibility. This novel method creates hierarchically porous shape memory scaffolds with an optimal Tg for reducing the invasiveness of implantation and allows for precise control over elastic modulus, porosity, structure, and transition temperature.

Facile approach for imparting shape memory behavior to traditional thermoplastic polyurethane via interaction between different hard segments

AbstractThe stability of hard domain is a key factor affecting the shape memory properties of thermoplastic polyurethane (TPU). However, the physical interaction in hard domains is weak for most kinds of TPU, leading to a plastic deformation and thus significantly decreasing the shape recovery ratio of TPU. In this work, a new strategy for constructing shape memory TPU was proposed, and the blends was prepared by simple solution mixing based on IPDI‐PU and HDI‐PU, in which isophorone diisocyanate (IPDI) with alicyclic structure was introduced in hard segments of IPDI‐PU, and hexamethylene diisocyanate (HDI) with linear structure was introduced in hard segments of HDI‐PU. With the introduction of HDI‐PU into IPDI‐PU, hydrogen bonds between mixed hard domains were formed more easily, which made it possible to tailor the stability of hard domains in PU blends by changing the composition of IPDI‐PU and HDI‐PU. Shape memory behavior of IPDI‐PU was difficult to be observed, while the shape fixity ratio and recovery ratio of the blends containing 30% HDI‐PU were respectively 94% and 72%. This simple and facile strategy can be used to develop the recyclable shape memory TPU, which will have a wider range of potential applications in smart devices.

Low melting point alloy modified polymer composite with sharp stiffness switch for soft actuator

Materials possessing switchable stiffness, particularly dynamically switchable stiffness, have generated a lot of attention in the soft actuator. Herein, we proposed a facial poly (vinyl alcohol) (PVA) coating method to fabricate the micron-sized Field's metal (FM) phase-changing particles with an average particle size of about 1.2 μm, and obtained a series of stiffness variable polymer composites via incorporating FM particles into the designed stiffness variable polymer matrix. Owing to the rapid solid-liquid change and ultra-high modulus of FM, the rigid/soft stiffness ratio of the composites improved to 1442-folds. Moreover, the shape fixity (Rf) and shape recovery ratio (Rr) values of the shape memory properties could reach up to ultra-high values of 99.4% and 99.6%, respectively. Subsequently, the prepared composites were selected and used a 3D printing soft actuator as the stiffness variable units. The soft actuator exhibits short heating-cooling time of 36s under 1.2A current and with 4 °C water as the coolant, and it is able to lift a 200 g weight at the rigid state. Furthermore, the stiffness of obtained actuator can achieve high value 779 mN/mm. The results indicate that the obtained soft actuator possesses excellent actuate behavior and stiffness switchable ability. This work might provide faster and more rigid variable stiffness materials for soft actuators application in the real world.

New low‐temperature resistant shape memory elastomer: Ethylene‐octene copolymer/methyl vinyl silicone rubber composites

AbstractA new series of thermoplastic elastomers were fabricated in this study employing ethylene‐octene copolymer (POE) and methyl vinyl silicone rubber (MVQ) as the thermoplastic phase and the elastomeric phase, respectively. The effect of POE/MVQ blending ratios on the vulcanization, mechanical, and thermal properties, cold resistance, shape memory properties, and hydrophobicity of the thermoplastic composites was investigated. Moreover, specific properties such as low‐temperature impact (LTI), shape memory and hydrophobicity properties exhibited by the POE/MVQ thermoplastic composites were studied in detail. The results indicated that the POE/MVQ composites exhibited remarkable mechanical properties and LTI strength. With the MVQ content reaching 10 phr, their tensile strength reached 30.07 MPa, significantly higher than that of pure POE. Regarding shape memory properties, the shape fixing ratio and the shape recovery ratio were 97.6% and 94.3%, respectively, at the MVQ content of 40 phr.