Shape and Stiffness Switchable Hydroplastic Wood with Programmability and Reproducibility

Zhang, Tao; Zhang, Daotong; Chen, Weimin; Chen, Yan; Yang, Kai; Yang, Pei; Quan, Qi; Li, Zhao; Zhou, Ke; Chen, Minzhi; Zhou, Xiaoyan

doi:10.1021/acsnano.3c06322

Cited by 8 publications

(1 citation statement)

References 56 publications

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“…This highly foldable material can be mechanically bent and folded into the desired shape. The process of periodic hydration and dehydration synchronously adjusts the processability and stiffness of wood shapes . We employed a high-temperature compression molding method to secure the plastic wood in a homemade wavy corrugated mold, yielding a molded corrugated wood core material (Figure S4a).…”

Section: Resultsmentioning

confidence: 99%

Super Lightweight, Scalable, High-Strength, Thermal Insulating Molded Corrugated Wood Boards for Cold Chain Transport Construction

Jiang,

Zhang,

Wang

et al. 2024

ACS Appl. Eng. Mater.

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Section: Resultsmentioning

confidence: 99%

Super Lightweight, Scalable, High-Strength, Thermal Insulating Molded Corrugated Wood Boards for Cold Chain Transport Construction

Jiang,

Zhang,

Wang

et al. 2024

ACS Appl. Eng. Mater.

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Muscle‐Inspired Formable Wood‐Based Phase Change Materials

Liu,

Lv,

Zhou

et al. 2024

Advanced Materials

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Phase change materials (PCMs) are crucial for sustainable thermal management in energy‐efficient construction and cold chain logistics, as they can store and release renewable thermal energy. However, traditional PCMs suffer from leakage and a loss of formability above their phase change temperatures, limiting their shape stability and versatility. Inspired by the muscle structure, formable PCMs with a hierarchical structure and solvent‐responsive supramolecular networks based on polyvinyl alcohol (PVA)/wood composites are developed. The material, in its hydrated state, demonstrates low stiffness and pliability due to the weak hydrogen bonding between aligned wood fibers and PVA molecules. Through treatment of poly(ethylene glycol) (PEG) into the PVA/wood PEG gel (PEG/PVA/W) with strengthened hydrogen bonds, the resulting wood‐based PCMs in the hard and melting states elevate the tensile stress from 10.14 to 80.86 MPa and the stiffness from 420 MPa to 4.8 GPa, making it 530 times stiffer than the PEG/PVA counterpart. Capable of morphing in response to solvent changes, these formable PCMs enable intricate designs for thermal management. Furthermore, supported by a comprehensive life cycle assessment, these shape‐adaptable, recyclable, and biodegradable PCMs with lower environmental footprint present a sustainable alternative to conventional plastics and thermal management materials.

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Sustainable Plastics with High Performance and Convenient Processibility

Xu,

Hou,

2024

Advanced Science

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Designing and making sustainable plastics is especially urgent to reduce their ecological and environmental impacts. However, it remains challenging to construct plastics with simultaneous high sustainability and outstanding comprehensive performance. Here, a composite strategy of in situ polymerizing a petroleum‐based monomer with the presence of an industrialized bio‐derived polymer in a quasi‐solvent‐free system is introduced, affording the plastic with excellent mechanical robustness, impressive thermal and solvent stability, as well as low energy, consumes during production, processing, and recycling. Particularly, the plastic can be easily processed into diverse shapes through 3D printing, injection molding, etc. during polymerization and further reprocessed into other complex structures via eco‐friendly hydrosetting. In addition, the plastic is mechanically robust with Young's modulus of up to 3.7 GPa and tensile breaking strength of up to 150.2 MPa, superior to many commercially available plastics and other sustainable plastics. It is revealed that hierarchical hydrogen bonds in plastic predominate the well‐balanced sustainability and performance. This work provides a new path for fabricating high‐performance sustainable plastic toward practical applications, contributing to the circular economy.

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Shape and Stiffness Switchable Hydroplastic Wood with Programmability and Reproducibility

Cited by 8 publications

References 56 publications

Super Lightweight, Scalable, High-Strength, Thermal Insulating Molded Corrugated Wood Boards for Cold Chain Transport Construction

Super Lightweight, Scalable, High-Strength, Thermal Insulating Molded Corrugated Wood Boards for Cold Chain Transport Construction

Muscle‐Inspired Formable Wood‐Based Phase Change Materials

Sustainable Plastics with High Performance and Convenient Processibility

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