聚酰胺-胺型树枝状高分子PAMAM溶液的特性粘度

The Intrinsic Viscosity of Polyamidoamine Dendrimer

测定了树枝状高分子ＰＡＭＡＭ（聚酰胺－胺型， 乙二胺为内核）及其季铵盐在水溶液中的特性粘度［η］． 结果表明， ＰＡＭＡＭ 的［η］在代数Ｇ＝ ２～３ 处有最大值， 而其季铵盐则在此处有最小值． 同时发现高分子的流体力学等效圆球半径Ｒη随Ｇ增大近似线性增长． 通过对ＰＡＭＡＭ 及其季铵盐特性粘度的研究，

The intrinsic viscosities of a group of polyamidoamine PAMAM dendrimer, having ethylenediamine as the core, have been investigated. The intrinsic viscosity of G =0.5~4.5 PAMAM shows a maximum at G =2~3, while the ammonium quanternaries show a minimum there. The hydrodynamic radii of PAMAM calculated from intrinsic viscosity, increase approximately linearly with dendrimer generation.