摘要
通过一组重量组成比为90/10的偏氯乙烯-丙烯酸甲酯(VDC-MA)共聚胶乳样品的凝胶渗透色谱GPC和特性粘度[η]的测定,应用普适校正原理和参数优化方法,订定了该共聚物在四氢呋喃中,30℃下的Mark-Houwink方程参数.结果得:K=3.421×10^(-2),α=0.64.将这一结果运用到GPC谱图的计算,所得的[η]与用粘度法实测值比较,最大偏差小于3.5％.
GPC and intrinsic viscosity measurements of vinylidene chloride-methyl acrylate (wt. ratio 90:10) copolymer in tetrahydrofuran at 30℃ were done. Based on the principle of GPC universal calibration, a new precise and simple method was developed for determining the Mark-Houwink constants of the system. In this method, the experimental data of GPC and [η] from several samples, rather than two samples, were adopted for improving the reliability of the approach. The values of K=3.421×10 and a = 0.64 were obtained.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1992年第1期56-60,共5页
Acta Polymerica Sinica
基金
浙江省自然科学基金
关键词
共聚胶乳
偏氯乙烯
丙烯酸甲酯
Mark-Houwink consyants K and a, GPC universal calibration, Intrinsic vi- scosity, VDC-MA Copolymer
