摘要
通过对壳聚糖(CTS)分子中氨基(-NH2)的化学改性与烷基取代度的调控(N的部分烷基化),合成制备了一种“梳型”的甜菜碱两性离子高分子表面活性剂产品。采用红外光谱(FT-IR)、核磁共振氢谱(1H NMR)与有机元素分析(EA)对合成产物的结构进行了表征;同时对产物的表面张力、接触角等进行了测试。结果表明:制备产物具有优异的表面活性,其中R10,2-CTS-B-20%的表面张力值最低可达27.07 mN/m;水~玻璃接触角的下降幅度达75.8%,反映出优异的表面活性。
Comb shaped chitosan betaine zwitterionic polymer surfactants were synthesized by chemical modification of amino group (-NH2) in chitosan molecule and the scheduling of the degree of alkyl substitution (partial alkylation of N atom). Structure of products was characterized by FT-IR, 1H NMR and organic element analysis (EA). At the same time, surface tension and contact angle of these surfactants were tested. Results showed that products had good surface activity. The surface tension of R10,2-CTS-B-20% could reach 27.07 mN/m;the contact angle of water with glass could decrease 75.8%, which reflected excellent surface activity.
出处
《化学工程与技术》
CAS
2020年第2期41-47,共7页
Hans Journal of Chemical Engineering and Technology
