3D printing of a versatile applicability shape memory polymer with high strength and high transition temperature

Tang, Zhangzhang; Gong, Junhui; Cao, Pengrui; Tao, Liming; Pei, Xianqiang; Wang, Tingmei; Zhang, Yaoming; Wang, Qihua; Zhang, Jianqiang

doi:10.1016/j.cej.2021.134211

Cited by 47 publications

(27 citation statements)

References 49 publications

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“…Further, Fe 3 O 4 was also added for transformation in a magnetic field. High-strength and high-transition shape-memory polymers were fabricated using the digital light process, direct ink writing, and 3D printing [ 12 ]. The 3D-printed technique gave better mechanical properties than other techniques.…”

Section: Introductionmentioning

confidence: 99%

Development of Multiwalled Carbon Nanotubes/Halloysite Nanotubes Reinforced Thermal Responsive Shape Memory Polymer Nanocomposites for Enhanced Mechanical and Shape Recovery Characteristics in 4D Printing Applications

Namathoti

Vakkalagadda

2023

Polymers

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The mechanical and shape-recovery characteristics of 4D-printed thermally responsive shape-memory polyurethane (SMPU) reinforced with two types of reinforcements, multiwalled carbon nanotubes (MWCNTs) and Halloysite nanotubes (HNTs), are investigated in the present study. Three weight percentages of reinforcements (0, 0.5, and 1) in the SMPU matrix are considered, and the required composite specimens are obtained with 3D printing. Further, for the first time, the present study investigates the flexural test for multiple cycles to understand the 4D-printed specimens’ flexural behavior variation after shape recovery. The 1 wt% HNTS-reinforced specimen yielded higher tensile, flexural, and impact strengths. On the other hand, 1 wt% MWCNT-reinforced specimens exhibited quick shape recovery. Overall, enhanced mechanical properties were observed with HNT reinforcements, and a faster shape recovery was observed with MWCNT reinforcements. Further, the results are promising for the use of 4D-printed shape-memory polymer nanocomposites for repeated cycles even after a large bending deformation.

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Section: Introductionmentioning

confidence: 99%

Development of Multiwalled Carbon Nanotubes/Halloysite Nanotubes Reinforced Thermal Responsive Shape Memory Polymer Nanocomposites for Enhanced Mechanical and Shape Recovery Characteristics in 4D Printing Applications

Namathoti

Vakkalagadda

2023

Polymers

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“…Moreover, to grasp the significance of this work visually. The six dimensions of T g , tensile strength, tensile modulus, elongation at break, shape fixed rate, and shape recovery rate were compared to other published works 11,16,39 and depicted in Figure 12.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, SMPs have attracted much research interest owing to their potential applications in the fields of aerospace, biomedical fields, actuators, smart textile, 3D printing, and flexible electronics. [7][8][9][10][11][12] According to different crosslinked architectures, SMPs can be classified into thermoplastic SMPs and thermoset SMPs. In general, the inherent crosslinked molecular network gives thermoset SMPs higher mechanical strength and thermal transition temperature than thermoplastic SMPs, which is desirable in some potential engineering applications.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with shape memory alloys (SMAs) and shape memory ceramics (SMCs), SMPs possess their peculiar advantages of low cost, lightweight, easy processing, tailorable thermal transition temperature, and significant deformation. Thus, SMPs have attracted much research interest owing to their potential applications in the fields of aerospace, biomedical fields, actuators, smart textile, 3D printing, and flexible electronics 7–12 . According to different crosslinked architectures, SMPs can be classified into thermoplastic SMPs and thermoset SMPs.…”

Section: Introductionmentioning

confidence: 99%

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Development of cyanate ester‐based shape memory composite reinforced by multi‐walled carbon nanotube modified with silicon dioxide

Guo

Yang

2023

J of Applied Polymer Sci

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Cyanate ester-based shape memory composites with superior mechanical properties and good shape memory performance are needed in the aerospace field. In this work, we utilized a simple sol-gel method to fabricate multi-walled carbon nanotubes coated with silica (MWCNT@SiO 2 ), which were used to construct a cyanate ester-based shape memory composite (SMPC). The moisture resistance of SMPC was improved by the introduction of MWCNT@SiO 2 . MWCNT@SiO 2 had an efficient enhancement effect on the mechanical strength and toughness of SMPC, and the SMPC exhibited the best mechanical properties with 0.9 wt% loading of MWCNT@SiO 2 , which was associated with the dispersion of MWCNT@SiO 2 in the resin matrix. Compared to neat cyanate ester and epoxidized hydroxyl-terminated polybutadiene resin matrix, it was found that the storage modulus of SMPC increased and the values of glass transition temperatures decreased by incorporation of MWCNT@SiO 2 .Meanwhile, the SMPC retained good shape memory performance, corresponding to high shape fixity ratio and shape recovery ratio (over 98% after 10 test cycles). The addition of MWCNT@SiO 2 accelerated the shape memory progress of SMPC.

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“…The viscosity of liquid resin plays a critical role in vat polymerization, determining the printing parameters and influencing the quality of the finished product. 29 Practically, a low-viscosity resin requires less time to produce a layer-bylayer printed product in vat polymerization, preventing the generation of defects in the samples owing to the absence of filling. In contrast, a resin with high viscosity takes a longer period to replenish, requiring more time to print the same models.…”

Section: D Printing Of the Des-based Pcrsmentioning

confidence: 99%

3D-Printed Photocurable Resin with Synergistic Hydrogen Bonding Based on Deep Eutectic Solvent

Kankala

et al. 2023

ACS Appl. Polym. Mater.

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Vat polymerization, one of the 3D printing technologies, has been widely applied owing to its advantageous properties, such as high accuracy and surface quality. However, the applicability of this technology is limited to end-use product manufacturing, requiring advancements due to a gradual increase in the performance requirements and functional demands of the products. In this study, deep eutectic solvent-based photocurable resins (PCRs) with synergistic hydrogen bonding are synthesized using a facile and ecofriendly procedure to tune monomer proportions. The as-prepared PCRs, with ultralow viscosity and ultrahigh curing rate, are compatible with commercial liquid-crystal display printers. The 3D-printed parts with high optical transparency, stiffness, and thermal resistance exhibit humidity-dependent electrical conductivity and mechanical properties. In addition, the 3D-printed objects demonstrate self-healing features due to the synergistic effect of high-density hydrogen bonding in the microphase-separated polymer matrix. Moreover, different categories of structural assembly, from 2D to 3D and small to large, are demonstrated, and their solubility ensued in recycling and remolding. The synthesized PCRs are suitable for fabricating sacrificial molds, enabling the on-demand fabrication of precise multifunctional structures with various materials, which are otherwise incompatible with UV-based 3D printing, facilitating 3D printing by overcoming its material-selection limitations.

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3D printing of a versatile applicability shape memory polymer with high strength and high transition temperature

Cited by 47 publications

References 49 publications

Development of Multiwalled Carbon Nanotubes/Halloysite Nanotubes Reinforced Thermal Responsive Shape Memory Polymer Nanocomposites for Enhanced Mechanical and Shape Recovery Characteristics in 4D Printing Applications

Development of Multiwalled Carbon Nanotubes/Halloysite Nanotubes Reinforced Thermal Responsive Shape Memory Polymer Nanocomposites for Enhanced Mechanical and Shape Recovery Characteristics in 4D Printing Applications

Development of cyanate ester‐based shape memory composite reinforced by multi‐walled carbon nanotube modified with silicon dioxide

3D-Printed Photocurable Resin with Synergistic Hydrogen Bonding Based on Deep Eutectic Solvent

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