摘要
本文用羧酸型聚酯聚氨酯离聚体和它的金属盐材料作正电子湮没(PAT),小角X射线散射(SAXS)以及比重法测量材料密度的实验,实验的结果表明,随着金属离子价数的增加,反离子半径增大,微畴体积增大,材料中的自由体积减小。本文还讨论了PAT和SAXS实验应用范围,并表明PAT是研究羧酸型盐聚酯聚氨酯离聚体微畴结构的有意义的方法。
The domain structure of carboxylic polyurethane ionomer and its metal salts ware studied by positron annihilation technique (PAT), small angle x-ray scattering (SAXS) and density measurement. The experimental results demonstrate that countcrion radius, domain volume and density of earboxyic polyurethane ionomer increase and free volume decrease with the valency of the metal ion. The application ranges of PAT and SAXS are discussed, It is shown that is a significant method to study domain structure in the ionomer.
出处
《南京大学学报（自然科学版）》
CAS
CSCD
1989年第4期628-632,共5页
Journal of Nanjing University（Natural Science）
关键词
聚氨酯离聚体
正电子湮没
微畴结构
carboxylic polyurcthane ionomer, positron annihilatiopn technique, small angle x-ray scattering
