CHAIN DYNAMICS OF COLLAPSING POLYACRYLAMIDE GELS BY QUASI-ELASTIC NEUTRON-SCATTERING

被引：1
|
作者：
PAVESI, L
RIGAMONTI, A
DERIU, A
CAVATORTA, F
MIDDENDORF, HD
机构：
[1] UNIV PARMA,DIPARTIMENTO FIS,I-43100 PARMA,ITALY
[2] UNIV EDINBURGH,SCH MED,DEPT BIOCHEM,EDINBURGH EH8 9YL,MIDLOTHIAN,SCOTLAND
[3] UNIV OXFORD,CLARENDON LAB,OXFORD,ENGLAND
来源：
PHYSICA B | 1992年 / 180卷
关键词：
D O I：
10.1016/0921-4526(92)90463-3
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Quasi-elastic neutron scattering measurements have been performed on polyacrylamide gels which exhibit a reversible collapse transition with extremely large (approximately 400-fold) volume changes. Using hydrogenous and selectively deuterated samples, we have investigated the behaviour of the critical dynamics in the intermediate region between near-hydrodynamic correlation lengths (30-40 angstrom) and lengths of the order of the monomer size (approximately 2 angstrom). The data reveal a marked slowing down of diffusion-like excitations in the Q-range explored.
引用
收藏
页码：773 / 775
页数：3
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