摘要
在含少量水的混合有机介质中,采用固定化脂肪酶对数均分子质量达10万以上的PBS及改性共聚物P(BS/CHDM)进行催化降解,并采用质谱(MS)对降解产物进行分析。研究结果表明:在脂肪酶的作用下,常压、60℃、反应24 h得到的产物为淡黄色油状的环状低聚物,主要为一至四环状多聚体,并伴有少量线型低聚物。
The catalytic degradation of prepared matrix PBS and P(BS/CHDM) by immobilized lipase carried out in the mixed organic medium containing a small amount of water, and degradation products were analyzed by mass spectrometry (MS). The results showed that under atmospheric pressure,60 ℃ , after 24 h catalytic degradation by immobilized lipase, the main products were light-yellow oil oligomer, almost were cyclic unimer, cyclic dimer or cyclic trimer and cyclic tetramer, accompanied a small amount of linear oligomers.
出处
《塑料》
CAS
CSCD
北大核心
2010年第2期83-85,共3页
Plastics
基金
国家自然科学基金(50673056)
温州科技计划项目(H20080045)
陕西省重大科技创新项目(2009ZKC08-09)
作者简介
张敏(1958-),女,博士,教授,博士生导师,研究方向:环境友好型高分子材料的合成、应用及基础理论。