摘要
本工作利用光散射和粘度方法,使用辐射聚合聚丙烯酰胺(PAAM)的级分样品,研究了在较宽分子量范围(10~4-10~7)内PAAM的特性粘数,分子尺寸及第二维利系数对重均分子量的依赖性.从实验上得到了PAAM在0.2mol/lNaCl水溶液中的均方旋转半径与均方末端距之间的关系及高分子-溶剂相互作用参数.
The properties of fractionated polyacrylamide(PAAM, Mw 104-107) in dilute aqueous salt solutions were studied by light scattering and viscometric methods. The relationships among intrinsic viscosity, mean square redius of gyration <R3>)z, the second virial coefficient A2 and weight average molecular weight were observed respectively. Additional results PAAM in 0.2 mol/1 NaCl aqueous solution were also obtained from a excluded volume exponent v = 0.566 A2: The ratio of the mean square end to end distance to <R3>2 equals 6.68 and the interaction parameter between macromolecules and solvents is 0.489.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1992年第1期9-14,共6页
Acta Polymerica Sinica
关键词
聚丙烯酰胺
溶液性质
光散射
Polyacryiamide, Aqueous solution, Viscosity equation, Macromolecular di mension. The sencond virial coefficient
