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用电子显微镜研究了聚丙烯酰胺的形态结构。将聚合物溶于正丙醇/水的混合溶剂中,用喷雾的方法制得单分子球粒,用电镜测定球柱尺寸,计算其数均,重均分子量及分子量分布。并讨论了沉淀剂/溶剂比例、溶液浓度及喷雾方法对所得结果的影响。
The morphology of polyacrylamide was studied by electron microscopy. The polymer was dissolved in a n-propanol / water mixed solvent. Single-molecule spheres were prepared by spray method. The size of the spheres was measured by electron microscopy to calculate the number average molecular weight, the weight average molecular weight and the molecular weight distribution. The effects of the ratio of precipitant / solvent, solution concentration and spray method on the results were also discussed.