Journal
APPLIED SURFACE SCIENCE
Volume 493, Issue -, Pages 1032-1041Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2019.06.193
Keywords
Alkali/urea solvent; Co-dissolution; Polysaccharide alloy; Physicochemical properties; Wound-healing
Categories
Funding
- Public Welfare Technology Application Research Project of Zhejiang Province [2017C33154]
- Natural Science Foundation of Zhejiang Province [LQ17H160003]
- Science Foundation of Zhejiang Sci-Tech University (ZSTU) [15012080-Y]
- National Natural Science Foundation of China [51803186]
- Young Researchers Foundation of the Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University [2015QN03, 2016QN02]
- National Undergraduate Training Program for Innovation and Entrepreneurship [201710338001]
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Blending of plant-based cellulose and marine-derived chitosan in micro-level has potential to make fascinating materials. However, this task is frequently hindered by the poor solubility of the polysaccharides. Here, using a green alkali/urea solvent media together with a well-designed dissolving strategy, original cellulose pulp and chitosan power were dispersed into a homogeneous solution. Driven by the intermolecular hydrogen-bond interaction, cellulose and chitosan chains were facially self-assembled into a unique 3D alloy structure. Owing to the rich interface interactions, the tensile strength and breaking elongation of the alloy film increased by 69% and 260%, respectively, when compared to a pure chitosan film. Besides, the 3D alloy films with a pore diameter of 920-1435 nm exhibited an extremely high cell viability which was higher than 95%. Additionally, accelerated wound healing rate of 95.6% reached in the presence of the alloy film after two weeks using a full-thickness wound in a rat model.
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