Abstract: In order to study the structures of partially hydrolyzed polyacrylamide(HPAM), the solid films were prepared on micasurface by using the self-assembly technique. The images of four kinds of solvent-free HPAM were studied and analyzed by atomicforce microscopy(AFM).The results showed that four kinds of HPAM were regularly distributed with different configurations of flower like, dendritic and pectine. All the different configurations can be obser ved clearly in the AFM images, which display the ifference of their mo lecular structures. This method is useful to determine the molecular image and the gelstructure of polymers and to study the solution structure of polymers. It is also helpful for developing the new polymers.

Key words: atomic force microscopy, partially hydrolyzed polyacrylamide, molecular structure, image, solid film

摘要： 用自组装技术在云母片表面制备了固体膜,研究了部分水解聚丙烯酰胺(HPAM)的结构形态。用原子力显微镜(AFM)观测和分析了4种去溶剂化后HPAM分子的结构形貌。结果显示,HPAM在云母片表面均呈现规则的分布,但分布形态差别很大。有的呈花朵状,有的呈树枝状,有的呈梳子状,形态各异,结构的异同非常清楚。这种方法有助于了解聚合物分子形态乃至其凝胶结构,同时也有助于研究聚合物溶液结构和开发新型聚合物。

关键词: 原子力显微镜, 部分水解聚丙烯酰胺, 分子结构, 形貌, 固体膜