聚乙烯醇/玉米秸秆微晶纤维素复合膜的制备与性能

Preparation and property of corn stalks cellulose microcrystal reinforced poly(vinyl alcohol)composites

采用玉米秸秆微晶纤维素(CSCMC)作为增强剂,生物可降解材料聚乙烯醇(PVA)作为基体,制备了PVA/CSCMC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,玉米秸秆微晶纤维素可增强复合膜材料的热稳定性能和力学性能。当CSCMC的质量分数为10%时增强效果最佳,与纯的PVA膜相比,复合膜的起始分解温度和最大重量损失率温度分别提高了19.25℃和17.17℃,拉伸强度提高了37.91%,断裂伸长率提高了58.93%。

The biodegradable composite films were prepared from corn stalks cellulose microcrystal（CSCMC） as the filler and pobKvinyl alcohob （PVA） as the polymeric matrix. The crystallinity, the tensile properties and thermaI proper- ties of film were tested. The results showed that the tensile properties and the thermal properties of the PVA / CSCMC composite were improved by the addition of corn stalks cellulose microcrystal. When the mass fraction of CSCMC was 10%, the initial decomposition temperature and maximum weight loss rate of film were raised by 19.25℃ and 17. 17℃, the tensile strength increased by 37.91 %, and the elongation at break increased by 58. 93 % compared to those of pure PVA.