Effect of cross-link density on the internal structure of Poly(N-isopropylacrylamide) microgels
Effect of cross-link density on the internal structure of Poly(N-isopropylacrylamide) microgels
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DOI：
10.1021/jp004600w
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发表时间：
2001-09-27
影响因子：
3.3
通讯作者：
Zrínyi, M
中科院分区：
文献类型：
--
作者：
Varga, I;Gilányi, T;Zrínyi, M
采用静态和动态光散射法研究了交联密度对乳液聚合法制备的聚N-异丙基丙烯酰胺微凝胶粒子结构的影响。根据这些测量，凝胶颗粒不能被认为是均匀的球体。凝胶颗粒的结构强烈地取决于交联度。在高交联密度下，颗粒可以用高斯链段密度分布来描述。随着交联密度的降低，微凝胶颗粒的结构趋向于高度支化的线圈。
The effect of cross-link density on the structure of Poly-(N-isopropylacrylamide) microgel particles prepared by emulsion polymerization was investigated by static and dynamic light scattering measurements. According to these measurements the gel particles cannot be considered as homogeneous spheres. The structure of the gel particles strongly depends on the degree of cross-linking. At high cross-link density the particles can be described with a Gaussian segment density distribution. With decreasing cross-link density the structure of the microgel particles tends toward that of a highly branched coil.