摘要
制备了不同脱乙酰度的甲壳素，并对脱酰化反应进行了研究．找出了适合不同脱酰度甲壳素的溶剂．探讨了制样温度与甲壳胺膜的结晶形态和力学性能之间的关系．比较了甲壳素、甲壳胺及不同来源甲壳素的结晶形态．
During the preparation of different deacetylated degrees of chitin from 4.5% to 95%, it has been found that the deacetylation rate varied with the pieces size of chitin and the reaction time. The chitosan membranes prepared by coating its solution on a glass plate and drying it at different temperatures show different crystal structures and mechanical properties under the measurement of PLM, XRD and DSC. XRD measurement also gives the difference between chitin and chitosan as well as the similarity of chitin films separately coated from crab chitin, silkworm chitin and squid chitin. The crystal cell of chitosan fiber is determined as a =0.987 nm, b =0.924 nm, c =1.031 nm and β =83.29 °.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第6期989-993,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
甲壳素
甲壳胺
力学性能
晶体
脱酰化反应
Chitin, Chitosan, Crystallinity, X ray diffraction, Mechanical property
