CHAIN MOBILITY AT SURFACES AND IN BULK - A C-13 NMR RELAXATION STUDY

被引：0

作者：

VANALSTEN, J

OVENALL, DW

机构：

来源：

POLYMER COMMUNICATIONS | 1991年 / 32卷 / 18期

关键词：

BROWNIAN DYNAMICS; C-13; NMR; CHAIN MOBILITY;

D O I：

暂无

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report the change in interfacial Brownian dynamics upon adsorption of a polymer chain to an immobile substrate. Using C-13 nuclear magnetic resonance spin-lattice relaxation measurements, we have found that the presence of polymer loops and tails slows Brownian motion within a region approximately 7 angstrom from the surface by roughly 25%. We have also found that these interfacial dynamics are insensitive to molecular weight.

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页码：549 / 550

页数：2

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