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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％.
The gel permeation chromatography (GPC) and intrinsic viscosity [η] of a series of vinylidene chloride-methyl acrylate (VDC-MA) copolymer latex samples with 90/10 weight ratio were determined by the universal calibration principle and parameter optimization method , The parameters of Mark-Houwink equation of the copolymer in THF at 30 ℃ were determined. The results were: K = 3.421 × 10 -2, α = 0.64. This result was applied to the calculation of GPC spectra , The resulting [η] compared with the measured value of the viscosity method, the maximum deviation of less than 3.5%.