甘蔗渣微晶纤维素增强聚乙烯醇复合膜的性能研究

Study on poly(vinyl alcohol) composite film reinforced by bagasse cellulose microcrystal

以甘蔗渣微晶纤维素(BCMC)作为增强材料,聚乙烯醇(PVA)作为基体,制备了BCMC/PVA复合膜材料,并对复合膜的结构、热稳定性能、力学性能进行了测试。结果表明,甘蔗渣微晶纤维素增强复合膜材料的热稳定性能和力学性能。当BCMC的质量分数为5%时增强效果最佳,与纯PVA膜相比,起始分解温度和最大重量损失率温度分别增加了11.71℃和36.86℃,拉伸强度提高了17.52%,断裂伸长率提高了29.58%。

A The biodegradable composite films were prepared from bagasse cellulose microcrystal（BCMC） as the fill- er and poly（vinyl alcohol）（PVA） as the polymeric matrix. The crystallinity, the tensile properties and the thermal proper- ties of the composite flim were tested. The results showed that the tensile properties and the thermal properties of the BC- MC/PVA composite were improved by the addition of bagasse cellulose mierocrystal. When the mass fraction of BCMC was 5 %, both temperatures of initial decomposition and maximum weight loss rate of composite film were raised by 11.71℃ and 36.86℃ ,the tensile strength was increased by 17.52% and the elongation at break increases by 29.58% compared to that of the pure PVA.