摘要
２－丙烯酰胺基烷磺酸的溶解行为和胶体化学性质明显随烷基长短而异，由于手性碳原子的存在，与其相邻亚甲基的质子峰在ＨＮＭＲ谱上清楚地发生分裂，研究了２－丙烯酰胺基十六烷磺酸（ＡＭＣ１６Ｓ）在水／二氧六环混合溶剂中的聚合动力学和胶体化化学性质，发现聚合速度和所得聚合物分子量均均在水／二氧六环体积比为１～１／２时出现最小值，临界胶束浓度随混合溶剂中二氧六环含量的增加而增加。
The solubility and colloidal properties of 2-acrylamidoalkanesulfonic acids were found to vary markedly with the alkyl length.Due to the existence of a chiral carbon,the peaks of methylene protons adjacent to it clearly split on the￣1H NMR spectra.The polymerization kinetics and colloidal properties of 2-acrylamidohexadecane sulfonic acid in water/dioxane mixed solvents were investigated.It is found that both the polymerization rate and the relative molecular mass of the resultant polymer have a minimum value when water/dioxane volume ratio is in the range of 1～1/2.The critical micelle concentration increases with the content of dioxane in the mixed solvent, and no apparent micelle formation is observed when water/dioxane volume ratio is 1/2～1/4.
出处
《应用化学》
CAS
CSCD
北大核心
1996年第1期1-5,共5页
Chinese Journal of Applied Chemistry
基金
中国科学院"八五"重点基础性研究资助
关键词
两亲单体
丙烯酰胺
烷磺酸
临界胶束浓度
amphiphilic monomer,acrylamidoalkanesulfonic acid,solubility,critical micelle concentration,NMR,polymerization characteristics
