食品科学2011，Vol.32Issue(21)：91-97,7.
不同紫胶膜的降解性能研究
Degradation Behavior of Different Types of Lac Films
摘要
Abstract
The degradation behavior of three different types of lac films（seedlac,shellac,and bleached lac） was studied in terms of weight loss rate.Each type of lac film under investigation could be degraded naturally and the degradation rate increased with increasing soil moisture content and temperature but decreased with increasing soil pH.A dynamic model describing their degradation respectively was established.Under the same conditions,the degradation half-lives of bleached lac,seedlac and shellac decreased sequentially.Moreover,their pre-and post-degradation samples were characterized using Fourier transform infrared spectroscopy（FTIR）,scanning electron microscopy（SEM） and capillary viscosimeter,and the results showed that these three types of lac films presented no considerable changes in their molecular structure but revealed significant changes in their morphology and tissue and exhibited a remarkable decrease in their relative molecular weights after degradation.关键词
紫胶/降解/质量法/相对黏度Key words
lac/degradation/weight loss/relative viscosity分类
轻工纺织引用本文复制引用
徐涓,张弘,孙彦琳,周梅村,郑华,李凯,李坤..不同紫胶膜的降解性能研究[J].食品科学,2011,32(21):91-97,7.基金项目
科技部农业科技成果转化基金项目 （）
国家林业科技成果推广项目 （）
国家林业公益性行业科研专项项目 （）
