Facile fabrication of reusable starch sponge with adjustable crosslinked networks for efficient nest-trap and in situ photodegrade methylene blue

Gao, Bingbing; Zhang, Congyun; Dong, Ran; Chen, Yukun; Zhang, Shuidong

doi:10.1016/j.carbpol.2023.121342

Carbohydrate Polymers

2023

DOI: 10.1016/j.carbpol.2023.121342

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Facile fabrication of reusable starch sponge with adjustable crosslinked networks for efficient nest-trap and in situ photodegrade methylene blue

Bingbing Gao,

Congyun Zhang,

Ran Dong

et al.

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2024

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Cited by 4 publications

References 62 publications

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Ultrastrong and Reusable Solar‒Thermal‒Electric Generators by Economical Starch Vitrimers

Gao,

Ku,

Chen

et al. 2024

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In frigid regions, it is imperative to possess functionality materials that are ultrastrong, reusable, and economical, providing self‐generated heat and electricity. One promising solution is a solar‒thermal‒electric (STE) generator, composed of solar‒thermal conversion phase change composites (PCCs) and temperature‐difference power‐generation‐sheets. However, the existing PCCs face challenges with conflicting requirements for solar‒thermal conversion efficiency and mechanical robustness, mainly due to monotonous functionalized aerogel framework. Herein, a novel starch vitrimer aerogel is proposed that incorporates orientational distributed carboxylated carbon nanotubes (CCNT) to create PCC. This innovative design integrates large through‐holes, mechanical robustness, and superior solar‒thermal conversion. Remarkably, PCC with only 0.8 wt.% CCNT loading achieves 85.8 MPa compressive strength, 102.4 °C at 200 mW cm−2 irradiation with an impressive 92.9% solar–thermal conversion efficiency. Noteworthy, the STE generator assembled with PCC harvests 99.1 W m−2 output power density, surpassing other reported STE generators. Strikingly, even under harsh conditions of −10 °C and 10 mW cm‒2 irradiation, the STE generator maintains 20 °C for PCC with 325 mV output voltage and 45 mA current, showcasing enhanced electricity generation in colder environments. This study introduces a groundbreaking STE generator, paving the way for self‐sufficient heat and electricity supply in cold regions.

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Ultrastrong and Reusable Solar‒Thermal‒Electric Generators by Economical Starch Vitrimers

Gao,

Ku,

Chen

et al. 2024

Small

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Fully Recycled Polyolefin Elastomer‐Based Vitrimers with Ultra‐High, Universal, Stable, and Switchable Adhesion

Liu,

Wang,

Chen

2024

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Achieving both robust adhesion to arbitrary surfaces and thermal‐switchable/recyclable properties has proven challenging, particularly for commodity polyolefins. Herein, a simple and effective route is reported to transform polyolefins elastomer (POE) into a fully recycled epoxy‐functionalized POE vitrimers (E‐POE vit) with ultra‐high, universal, stable, and switchable adhesion via facile free radical grafting and dynamic cross‐linking. The resultant E‐POE vit exhibits increase in adhesion strength on glass exceeding three to ten times compared to those commonly used polymers, due to the synergy of dense hydrogen (H)‐bonds and strong interfacial affinity. In addition, E‐POE vit also displays strong adhesion on diverse surfaces ranging from inorganic to organic while maintaining good stability in various harsh environments. More importantly, temperature‐sensitive H‐bonds allow E‐POE vit to switch between attachment‐detachment at alternating temperatures, resulting in reversible adhesion without adhesion loss, even after 10 cycles. Moreover, E‐POE vit is able to be fully recycled and reused more than ten times via thermo‐activated transesterification reactions with negligible change in structure and performance. This work may unlock strategies to fabricate high‐performance commercial polymer‐based adhesives with adhesion and recyclable features for intelligent and sustainable applications.

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Zwitterionic cellulose nanofibers-based hydrogels with high toughness, ionic conductivity, and healable capability in cryogenic environments

Han,

Zeng,

Xia

et al. 2024

Carbohydrate Polymers

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Facile fabrication of reusable starch sponge with adjustable crosslinked networks for efficient nest-trap and in situ photodegrade methylene blue

Cited by 4 publications

References 62 publications

Ultrastrong and Reusable Solar‒Thermal‒Electric Generators by Economical Starch Vitrimers

Ultrastrong and Reusable Solar‒Thermal‒Electric Generators by Economical Starch Vitrimers

Fully Recycled Polyolefin Elastomer‐Based Vitrimers with Ultra‐High, Universal, Stable, and Switchable Adhesion

Zwitterionic cellulose nanofibers-based hydrogels with high toughness, ionic conductivity, and healable capability in cryogenic environments

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