RELAXATION BEHAVIOR IN THE ALPHA-BETA SPLITTING REGION OF THE GLASS-TRANSITION IN PNBMA BY MEANS OF C-13 2D-MAS EXCHANGE NMR

被引：18

作者：

DOMBERGER, W

REICHERT, D

GARWE, F

SCHNEIDER, H

DONTH, E

机构：

[1] Dept. of Phys., Halle Univ., Saale

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1995年 / 7卷 / 38期

关键词：

D O I：

10.1088/0953-8984/7/38/002

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Two distinct exchange rates are obtained in the splitting region of local (beta) and cooperative (alpha) relaxations for poly(n butyl methacrylate) (PnBMA) by C-13 2D-MAS exchange NMR. They fit well to the shear loss modulus traces of alpha and beta in the Arrhenius diagram.

引用

页码：7419 / 7426

页数：8

共 23 条

[1]

Beiner M, Garwe F, Hempel E, Schawe J, Schroter K, Schonhals A, Donth E, Physica, 201, 1-3, (1993)

[2]

Donth E, Characteristic length of glass transition, Journal of Non-Crystalline Solids, 131-133, (1991)

[3]

Donth E, (1992)

[4]

Donth E, Schenk W, Ebert A, Acta Polymerica, 30, 9, (1979)

[5]

Ernst R, Bodenhausen G, Wokaun A, (1989)

[6]

Fedotov VD, Schneider H, (1989)

[7]

Garwe F, Schonhals A, Beiner M, Schroter K, Donth E, J. Non-Cryst. Solids, 6, (1994)

[8]

Garwe F Schonhals A, Lockwenz H, Beiner M, Schroter K, Donth E, Macromolecules, (1995)

[9]

Hagemeyer A, Schmidt-Rohr K, Spiess HW, Two-Dimensional Nuclear Magnetic Resonance Experiments for Studying Molecular Order and Dynamics in Static and in Rotating Solids, Adv. Magn. Reson., 13, (1989)

[10]

Johari GP, Goldstein M, J. Chem. Phys., 55, 9, (1971)

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