Shape-memory polyurethane elastomer originated from waste PET plastic and their composites with carbon nanotube for sensitive and stretchable strain sensor

Zhou, Xing; Wang, Guosheng; Li, Dexiang; Wang, Qi; Zhu, Keming; Hao, Yaya; Xu, Yueyang; Li, Neng

doi:10.1016/j.compositesa.2023.107920

Cited by 5 publications

(1 citation statement)

References 43 publications

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“…Consequently, clean and eco-friendly packaging materials using biobased and biomass materials are being developed [3]. However, conventional packaging materials available in the market, such as polyethylene, polypropylene, and polyethylene terephthalate, are nonbiodegradable and mostly derived from petroleum [4], thereby posing adverse impacts on nature, especially in marine environments [5]. Additionally, biodegradable packaging material cannot maintain their quality without improving their performance [6,7].…”

Section: Introductionmentioning

confidence: 99%

New Surface Modification of Hydrophilic Polyvinyl Alcohol via Predrying and Electrospinning of Hydrophobic Polycaprolactone Nanofibers

Ahn,

Park,

Sadeghi

et al. 2024

Foods

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Despite the excellent oxygen barrier and biodegradability of polyvinyl alcohol (PVA), its poor physical properties owing to its inherent hydrophilicity limit its application. In this paper, we report a novel surface modification technique for PVA films, involving the control of the predrying conditions (i.e., amount of residual solvent) of the coated PVA film and adjusting the electrospinning process of hydrophobic polycaprolactone (PCL) nanofibers onto the PVA films. The residual solvent of the coated PVA film was varied by changing the predrying time. A shorter predrying time increased the residual solvent content significantly (p < 0.05) and the flexibility of the coated PVA film. Moreover, scanning electron microscopy depicted the improved physical binding of hydrophobic PCL nanofibers to the hydrophilic PVA surface with increased penetration depth to the PVA film with shorter drying times. The PVA/PCL composite films with different predrying times and electrospun PCL nanofibers exhibited an apparent increase in the contact angle from 8.3° to 95.1°. The tensile strength of the pure PVA film increased significantly (p < 0.05) from 7.5 MPa to 77.4 MPa and its oxygen permeability decreased from 5.5 to 1.9 cc/m2·day. Therefore, our newly developed technique is cost-effective for modifying the surface and physical properties of hydrophilic polymers, broadening their industrial applications.

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Section: Introductionmentioning

confidence: 99%

New Surface Modification of Hydrophilic Polyvinyl Alcohol via Predrying and Electrospinning of Hydrophobic Polycaprolactone Nanofibers

Ahn,

Park,

Sadeghi

et al. 2024

Foods

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Recent advances in the modification of melamine sponge for oil-water separation

Zhou,

Li,

Wang

et al. 2025

Journal of Materials Science & Technology

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Preparation of High-Performance Thermosetting Polyurethanes for Rapid Degradation and Recycling via Quadruple Boron–Oxygen Bonds

Liang,

Chen,

Cui

et al. 2024

ACS Appl. Polym. Mater.

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Degradable and recyclable thermosets can be prepared by introducing dynamic bonds, but the introduction of dynamic bonds often reduces the mechanical properties as well as the thermal stability of the materials, and a balance between degradability, mechanical properties, and thermal stability cannot be achieved. For this reason, in this paper, a thermosetting polyurethane (BPU1.5) with multiple excellent properties was prepared by a simple and rapid method using 1,4-phenylenebisboronic acid to introduce quadruple boron–oxygen bonds into polyurethanes. 1,4-Phenylenebisboronic acid, as a dynamic cross-linking agent, on the one hand, provided an excellent cross-linking structure for BPU1.5, which resulted in the stable mechanical properties of BPU1.5 (high tensile strength up to 34.0 MPa) and excellent thermal properties (5% weight loss temperature of 337.0 °C); on the other hand, due to the quadruple boron–oxygen bonds, the polyurethane not only possesses excellent recycling properties but also has the ability to be degraded rapidly (complete degradation in 106 min at 0.1 M HCl/tetrahydrofuran). In addition, a strain sensor based on BPU1.5 was prepared by introducing a conductive filler for detecting finger bending, and the conductive filler can also be recycled due to the swelling property of BPU1.5, which is important for the protection of the environment and resource conservation.

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Shape-memory polyurethane elastomer originated from waste PET plastic and their composites with carbon nanotube for sensitive and stretchable strain sensor

Cited by 5 publications

References 43 publications

New Surface Modification of Hydrophilic Polyvinyl Alcohol via Predrying and Electrospinning of Hydrophobic Polycaprolactone Nanofibers

New Surface Modification of Hydrophilic Polyvinyl Alcohol via Predrying and Electrospinning of Hydrophobic Polycaprolactone Nanofibers

Recent advances in the modification of melamine sponge for oil-water separation

Preparation of High-Performance Thermosetting Polyurethanes for Rapid Degradation and Recycling via Quadruple Boron–Oxygen Bonds

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