摘要
合成了油溶性N,N-双十二烷基壳聚糖。以氯仿为共溶剂,采用溶液共混法,制备了各种不同比例的N,N-双十二烷基壳聚糖(NDLC)/L-聚乳酸(PLLA)共混物。TG实验表明,聚乳酸的介入提高了N,N-双十二烷基壳聚糖的热分解温度。DSC实验表明,随着N,N-双十二烷基壳聚糖比例的增大,共混物中聚乳酸的结晶形态会发生改变,甚至出现无定形结构;而在两者比例相近时,共混物在115℃处出现一个新的吸热峰。
Oil-soluble N, N - dilau formed by the reaction of chitosan an ryl chitosan was synthesized by d lauryl aldehyde. The product reducing the Schiff＇s base has been characterized by FT-IR, NMR and EA. In this paper, five different mass ratios of N, N-dilauryl chitosan/poly （L-lactic acid） blends have been prepared by solution blending using chloroform as solvent. TG experimental results show the thermal decomposition temperature of N,N-dilauryl chitosan in the blends are raised to 220℃ from 168 ℃. DSC experiments indicate the crystal structure of poly （L-lactic acid） in the blends have been changed and even become amorphous structure as the ratio of N,N-dilauryl chitosan increasing; it is worthy to notice that the blends appear a new peak at 115 ℃ when the ratio of two components in the blend is closely equal.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2006年第1期24-27,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金(20274013)
福建省重大科技项目(2002I004)
福建省自然科学基金(C0310009)
关键词
烷基化
壳聚糖
聚乳酸
共混
热行为
chitosan
alkylation
blend
thermal behavior
poly （L- lactic acid）
