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 7 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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Fatigue-Resistant Polystyrene Microsphere Nanoarray Strain Sensors Based on the PDMS Flexible Substrate

Wang,

Guang,

Fan

et al. 2024

ACS Appl. Electron. Mater.

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Flexible strain sensors have gained prominence in applications such as wearable devices, smart healthcare, and human motion monitoring due to their excellent adaptability and sensitivity. However, challenges such as high production costs and complex fabrication processes hinder their widespread commercial adoption. This study presented a fatigue-resistant polystyrene (PS) microsphere nanoarray optical strain sensor based on a polydimethylsiloxane flexible substrate, fabricated using a simple hemispherical indentation-assisted method. The sensor exhibited exceptional stability, enduring over 950 cycles, and demonstrated remarkable durability and sensitivity (−0.371 nm/ %) at stretching speeds of 62.5 μm/s. Finite element analysis, supported by the experimental data, clarified the mechanical behavior of PS nanoarrays under varying strain angles and analyzed the influence of these angles on the sensing spectrum. Besides, fatigue points caused by repeated use could be naturally recovered, with the restored sensor maintaining excellent stability. The results suggested that this proposed flexible nanostructure offered a high-performance, cost-effective, and straightforward manufacturing option for strain optical sensors.

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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 7 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

Fatigue-Resistant Polystyrene Microsphere Nanoarray Strain Sensors Based on the PDMS Flexible Substrate

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