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27-06-2020 | Original Research | Issue 13/2020

Cellulose 13/2020

Water cast film formability of sugarcane bagasse xylans favored by side groups

Journal:
Cellulose > Issue 13/2020
Authors:
Zhouyang Xiang, Xuchen Jin, Caoxing Huang, Lian Li, Wanhua Wu, Haisong Qi, Yoshiharu Nishiyama
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The online version of this article (https://​doi.​org/​10.​1007/​s10570-020-03291-7) contains supplementary material, which is available to authorized users.

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Abstract

Hemicellulose, one of the most abundant biopolymers next to cellulose, has been considered as a potential substitute to synthetic polymers. Film casting from water is the most basic route for material applications of xylan. However, depending on plant sources and separation methods, xylans do not always form films and the related mechanism is unclear, which significantly hinders their material applications. We extensively characterized various fractions of bagasse xylan to understand the molecular features promoting the film formation. The side groups of xylans or impurities contributed to the prevention of excessive aggregation or crystallization of xylan molecules, leading to the film-forming capacity. However, once the film is formed, the side groups do not seem to be necessarily contributing to the mechanical resistance.

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