DIMENSIONS OF A FLEXIBLE POLYMER-CHAIN IN BULK AND IN SOLUTION
DIMENSIONS OF A FLEXIBLE POLYMER-CHAIN IN BULK AND IN SOLUTION
复制标题
DOI：
10.1038/physci245013a0
复制
发表时间：
1973-01-01
期刊：
影响因子：
--
通讯作者：
OBER, R
中科院分区：
文献类型：
--
作者：
BENOIT, H;DECKER, D;OBER, R
分散在良溶剂中的聚合物分子膨胀1，明显超过链段纯随机取向所预期的尺寸。然而，在本体中，有理论上的理由2表明分子应该恢复其“高斯”尺寸。很长一段时间里，这一论断的实验证据一直缺失。几个人（G。艾伦和S. F.爱德华兹，个人沟通，和裁判。3和4）最近认识到，这种证据可以从小角度中子散射实验中获得。其中一个已经发表了关于聚甲基丙烯酸甲酯的研究结果。我们在这里讨论无规聚苯乙烯的一些结果。
POLYMER molecules dispersed in a good solvent expand1significantly beyond the size expected from purely random orientation of the segments. In the bulk, however, there are theoretical reasons2which indicate that the molecule should recover its “Gaussian” size. For a long time experimental evidence for this assertion was missing. Several people (G. Allen and S. F. Edwards, personal communication, and refs. 3 and 4) have recently recognized that such evidence may be obtained from a small angle neutron scattering experiment. One of them4has already published results on polymethyl methacrylate. We discuss here some results for atactic polystyrene.