Citation: Long Chen, Chang-yu Tang, Nan-ying Ning, Chao-yu Wang, Qiang Fu, Qin Zhang. PREPARATION AND PROPERTIES OF CHITOSAN/LIGNIN COMPOSITE FILMS[J]. Chinese Journal of Polymer Science, ;2009, 27(5): 739-746. shu

PREPARATION AND PROPERTIES OF CHITOSAN/LIGNIN COMPOSITE FILMS

Received Date: 20 October 2008
Revised Date: 24 November 2008

Biodegradable composite films based on chitosan and lignin with various composition were prepared via the solution-casting technique. FT-IR results indicate the existence of hydrogen bonding between chitosan and lignin, and SEM images show that lignin could be well dispersed in chitosan when the content of lignin is below 20 wt% due to the strong interfacial interaction. As a result of strong interaction and good dispersion, the tensile strength, storage modulus, thermal degradation temperature and glass transition temperature of chitosan have been largely improved by adding lignin. Our work provides a simple and cheap way to prepare fully biodegradable chitosan/lignin composites, which could be used as packaging films or wound dressings.
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