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Green preparation o...
Green preparation of antibacterial shape memory foam based on bamboo cellulose nanofibril and waterborne polyurethane for adaptive relief of plantar pressure
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- Han, Yanting (författare)
- West China Hospital/West China School of Nursing, Sichuan University, Chengdu, China
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- Jiang, Yuanzhang (författare)
- College of Biomass Science and Engineering, Key Laboratory of Biomass Fibers for Medical Care in Textile Industry, Sichuan University, Chengdu 610065, China
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- Xu, Dingfeng (författare)
- KTH,Glykovetenskap
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- Shi, Shuo (författare)
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
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- Zhang, Qiang (författare)
- College of Biomass Science and Engineering, Key Laboratory of Biomass Fibers for Medical Care in Textile Industry, Sichuan University, Chengdu 610065, China
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- Zhang, Yong (författare)
- College of Biomass Science and Engineering, Key Laboratory of Biomass Fibers for Medical Care in Textile Industry, Sichuan University, Chengdu 610065, China
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- Feng, Jinhua (författare)
- West China Hospital/West China School of Nursing, Sichuan University, Chengdu, China
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- Tan, Lin (författare)
- College of Biomass Science and Engineering, Key Laboratory of Biomass Fibers for Medical Care in Textile Industry, Sichuan University, Chengdu 610065, China; Sate Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
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- Li, Ka (författare)
- West China Hospital/West China School of Nursing, Sichuan University, Chengdu, China
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(creator_code:org_t)
- Elsevier BV, 2024
- 2024
- Engelska.
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Ingår i: International Journal of Biological Macromolecules. - : Elsevier BV. - 0141-8130 .- 1879-0003. ; 256
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This study developed an aqueous solution blending and freeze-drying method to prepare an antibacterial shape memory foam (WPPU/CNF) based on waterborne PHMG-polyurethane and cellulose nanofibers derived from bamboo in response to the increasing demand for environmentally friendly, energy conserving, and multifunctional foams. The obtained WPPU/CNF composite foam has a highly porous network structure with well-dispersed CNFs forming hydrogen bonds with the WPPU matrix, which results in a stable and rigid cell skeleton with enhanced mechanical properties (80 KPa) and anti-abrasion ability. The presence of guanidine in the polyurethane chain endowed the WPPU/CNF composite foam with an instinctive and sustained antibacterial ability against Escherichia coli and Staphylococcus aureus. The WPPU/CNF composite foam exhibited a water-sensitive shape memory function in a cyclic shape memory program because of the chemomechanical adaptability of the hydrogen-bonded network of CNFs in the elastomer matrix. The shape-fixation ratio for local compression reached 95 %, and the shape-recovery rate reached 100 %. This allows the WPPU/CNF pad prototype to reversibly adjust the undulation height to adapt to plantar ulcers, which can reduce the local plantar pressure by 60 %. This study provides an environmentally friendly strategy for cellulose-based composite fabrication and enriches the design and application of intelligent foam devices.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Nyckelord
- Antibacterial
- Cellulose
- Foams
- Shape memory
- Waterborne polyurethane
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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