Free volume aspects of the strong-fragile classification of polymer liquids

被引：18

作者：

Bartos, J ^{[1
]}

Kristiak, J

机构：

[1] SAS, Inst Polymer, SK-84236 Bratislava, Slovakia

[2] SAS, Inst Phys, SK-84228 Bratislava, Slovakia

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1998年 / 235卷

关键词：

D O I：

10.1016/S0022-3093(98)00508-0

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The strong-fragile classification or, alternatively, the cooperativity concept of polymer liquid dynamics was tested from a free volume point of view by positron annihilation lifetime spectroscopy. For a series of six polymers we found that the expansivity of the mean free volume hole size correlates with the fragility as well as with the non-exponentiality. These tendencies support the original interpretational proposals. (C) 1998 Elsevier Science B.V. All rights reserved.

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收藏

页码：293 / 295

页数：3

相关论文

共 10 条

[1]

Angell C. A., 1985, Relaxations in Complex Systems, P3

[2] Free volume microstructure of amorphous polymers at glass transition temperatures from positron annihilation spectroscopy data [J].

Bartos, J .

COLLOID AND POLYMER SCIENCE, 1996, 274 (01) :14-19

[3] Free volume microstructure of tetramethylpolycarbonate at low temperatures studied by positron annihilation lifetime spectroscopy: A comparison with polycarbonate [J].

Bartos, J ;

Kristiakova, K ;

Sausa, O ;

Kristiak, J .

POLYMER, 1996, 37 (15) :3397-3403

[4] Free volume and microscopic dynamics in amorphous polymers [J].

Bartos, J ;

Kristiak, J ;

Kanaya, T .

PHYSICA B, 1997, 234 :435-436

[5] NONEXPONENTIAL RELAXATIONS IN STRONG AND FRAGILE GLASS FORMERS [J].

BOHMER, R ;

NGAI, KL ;

ANGELL, CA ;

PLAZEK, DJ .

JOURNAL OF CHEMICAL PHYSICS, 1993, 99 (05) :4201-4209

[6] FREE-VOLUME MICROSTRUCTURE OF AMORPHOUS POLYCARBONATE AT LOW-TEMPERATURES DETERMINED BY POSITRON-ANNIHILATION-LIFETIME SPECTROSCOPY [J].

KRISTIAK, J ;

BARTOS, J ;

KRISTIAKOVA, K ;

SAUSA, O ;

BANDZUCH, P .

PHYSICAL REVIEW B, 1994, 49 (10) :6601-6607

[7] CHEMICAL-STRUCTURE AND INTERMOLECULAR COOPERATIVITY - DIELECTRIC-RELAXATION RESULTS [J].

NGAI, KL ;

ROLAND, CM .

MACROMOLECULES, 1993, 26 (25) :6824-6830

[8] CORRELATION OF POLYMER SEGMENTAL CHAIN DYNAMICS WITH TEMPERATURE-DEPENDENT TIME-SCALE SHIFTS [J].

PLAZEK, DJ ;

NGAI, KL .

MACROMOLECULES, 1991, 24 (05) :1222-1224

[9] SEGMENTAL RELAXATION IN BLENDS OF POLYCHLOROPRENE AND EPOXIDIZED POLYISOPRENE [J].

ROLAND, CM ;

SANTANGELO, PG ;

BARAM, Z ;

RUNT, J .

MACROMOLECULES, 1994, 27 (19) :5382-5386

[10] RHEOLOGICAL INVESTIGATION OF POLYBUTADIENES HAVING DIFFERENT MICROSTRUCTURES OVER A LARGE TEMPERATURE-RANGE [J].

ZORN, R ;

MCKENNA, GB ;

WILLNER, L ;

RICHTER, D .

MACROMOLECULES, 1995, 28 (25) :8552-8562