溶胶-凝胶法制备HPMC/SiO_2杂化复合薄膜

HPMC/SiO_2 Inorganic Hybrid Composite Films Were Prepared via Sol-Gel Process

采用溶胶-凝胶法(sol-gel)在聚乳酸(PLA)基膜上负载羟丙基甲基纤维素/二氧化硅(HPMC/SiO2)有机-无机杂化层,制备HPMC/SiO2有杂化复合薄膜。表征和测试杂化复合薄膜的结构与性能。结果表明:当HPMC溶液体积分数为6%时,杂化复合薄膜的氧气阻隔性能比PLA薄膜的氧气阻隔性能提高了36倍,同时,杂化复合薄膜的拉伸强度优于PLA薄膜。

Transparent HPMC/SiO2 inorganic-organic hybrid composite films, consisting of inorganic- organic hybrid composites on polylactic acid（PLA） film, are prepared via sol-gel process. The structure and properties of the hybrid composite films are inspected. The results show that when the volume ratio of HPMC solution to the hybrid sol is 6%, oxygen barrier of the hybrid composite films improved 32.3 times than PLA film. At the same time, tensile strength of the hybrid composite films are better than pure PLA film.