Vanishing structural effects of temperature in polymer glasses close to the glass-transition temperature

被引：3

作者：

Shantarovich, V. P.

Suzuki, T.

Ito, Y.

Yu, R. S.

Kondo, K.

Yampolskii, Yu. P.

Alentiev, A. Yu.

机构：

[1] Russian Acad Sci, NN Semenov Chem Phys Inst, Moscow 119991, Russia

[2] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan

[3] Russian Acad Sci, AV Topchiev Petrochem Synth Inst, Moscow 117912, Russia

来源：

RADIATION PHYSICS AND CHEMISTRY | 2007年 / 76卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1016/j.radphyschem.2006.03.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Positron annihilation lifetime (PAL) measurements were used for observation of structural effects of temperature in polystyrene (PS), super-cross-linked polystyrene networks (CPS), and in polyimides (PI) below and in the vicinity of glass-transition temperature T-g. "Vanishing" of these structural effects in the repeating cycles of the temperature controlled PAL experiments due to the slow relaxation processes in different conditions and details of chemical structure is demonstrated. Obtained results illustrate complex, dependent on thermal history, inhomogeneous character of the glass structure. In fact, structure of some polymer glasses is changing continuously. Calculations of the number density of free volume holes in these conditions are discussed. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：134 / 137

页数：4

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[1] VISCOSITY OF FLUORIDE GLASSES AT GLASS-TRANSITION TEMPERATURE
KOIDE, M
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KOMATSU, T
[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1990, 125 (1-2) : 93 - 97
[2] VISCOSITY OF FLUORIDE GLASSES AT GLASS-TRANSITION TEMPERATURE
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KOIDE, M
KOMATSU, T
[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1992, 140 (1-3) : 119 - 122
[3] GLASS-TRANSITION TEMPERATURE IN SOME METALLIC GLASSES
HIRATA, T
[J]. SCRIPTA METALLURGICA, 1979, 13 (07): : 555 - 559
[4] THE GLASS-TRANSITION TEMPERATURE OF POLYMER DILUENT SYSTEMS
RIGHETTI, MC
AJROLDI, G
PEZZIN, G
[J]. POLYMER, 1992, 33 (22) : 4779 - 4785
[5] INSTRUMENTAL EFFECTS ON GLASS-TRANSITION TEMPERATURE
GARN, PD
MENIS, O
[J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1976, 172 (SEP3): : 62 - 62
[6] STRUCTURAL RELAXATION AROUND THE GLASS-TRANSITION TEMPERATURE IN AMORPHOUS POLYMER BLENDS - TEMPERATURE AND COMPOSITION DEPENDENCE
MIGAHED, MD
FAHMY, T
[J]. POLYMER, 1994, 35 (08) : 1688 - 1693
[7] EFFECT OF POLYMER FORMATION CONDITIONS ON POLYMER GLASS-TRANSITION TEMPERATURE
OLEINIK, EF
SALAMATINA, OB
AKOPYAN, EL
RUDNEV, SN
NAZARENKO, SI
ENIKOLOPYAN, NS
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[8] CONNECTION BETWEEN THE LOW-TEMPERATURE ANOMALY IN GLASSES AND THE GLASS-TRANSITION TEMPERATURE
RAYCHAUDHURI, AK
POHL, RO
[J]. SOLID STATE COMMUNICATIONS, 1981, 37 (02) : 105 - 108
[9] GLASS-TRANSITION TEMPERATURE OF POLYMER-DILUENT SYSTEMS
CHOW, TS
[J]. FERROELECTRICS, 1980, 30 (1-4) : 139 - 145
[10] ANALYSIS OF THE GLASS-TRANSITION TEMPERATURE OF MISCIBLE POLYMER BLENDS
AUBIN, M
PRUDHOMME, RE
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