EVALUATION OF POLYMER FREE-VOLUME BY POSITRON-ANNIHILATION AND GAS DIFFUSIVITY MEASUREMENTS

被引：95

作者：

KOBAYASHI, Y ^{[1
]}

HARAYA, K ^{[1
]}

HATTORI, S ^{[1
]}

SASUGA, T ^{[1
]}

机构：

[1] JAPAN ATOM ENERGY RES INST,TAKASAKI RADIAT CHEM RES ESTAB,TAKASAKI,GUNMA 37012,JAPAN

来源：

POLYMER | 1994年 / 35卷 / 05期

基金：

日本科学技术振兴机构;

关键词：

PEEK; POSITRON ANNIHILATION; FREE VOLUME;

D O I：

10.1016/0032-3861(94)90934-2

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this paper we show that there exists a linear relationship between the size of a cavity where an ortho-positronium (o-Ps) atom annihilates by the 'pick-off mechanism and the total free volume of the molecular liquid or polymer under consideration. This relationship is used to determine the free volume of electron irradiated poly(aryl-ether-ether-ketone) (PEEK) samples and the result is compared with that obtained from gas diffusivity measurements.

引用

页码：925 / 928

页数：4

共 15 条

[1] VAN DER WAALS VOLUMES + RADII [J].

BONDI, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1964, 68 (03) :441-+

[2] CONCENTRATION AND TEMPERATURE DEPENDENCE OF DIFFUSION COEFFICIENTS FOR SYSTEMS POLYMETHYL ACRYLATE AND NORMAL-ALKYL ACETATES [J].

FUJITA, H ;

KISHIMOTO, A ;

MATSUMOTO, K .

TRANSACTIONS OF THE FARADAY SOCIETY, 1960, 56 (03) :424-437

[3] PERMEATION OF OXYGEN, ARGON AND NITROGEN THROUGH POLYMER MEMBRANES [J].

HARAYA, K ;

HWANG, ST .

JOURNAL OF MEMBRANE SCIENCE, 1992, 71 (1-2) :13-27

[4] QUENCHING OF POSITRONIUM ATOMS BY NITROBENZENE IN VARIOUS SOLUTIONS [J].

KOBAYASHI, Y .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1991, 87 (22) :3641-3645

[5] CORRELATION BETWEEN THE ORTHO-POSITRONIUM PICK-OFF ANNIHILATION LIFETIME AND THE FREE-VOLUME IN MOLECULAR LIQUIDS AND POLYMERS [J].

KOBAYASHI, Y ;

HARAYA, K ;

KAMIYA, Y ;

HATTORI, S .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1992, 65 (01) :160-163

[6] EFFECT OF EXTERNAL-PRESSURE ON THE REACTIVITY OF NITROBENZENE TOWARD POSITRONIUM IN HEXANE AND BENZENE SOLUTIONS [J].

KOBAYASHI, Y .

CHEMICAL PHYSICS LETTERS, 1990, 172 (3-4) :307-311

[7] EFFECT OF ANTIPLASTICIZATION ON GAS SORPTION AND TRANSPORT .3. FREE-VOLUME INTERPRETATION [J].

MAEDA, Y ;

PAUL, DR .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1987, 25 (05) :1005-1016

[8] COMPARISON OF GAS PERMEATION IN VINYL AND VINYLIDENE POLYMERS [J].

MOHR, JM ;

PAUL, DR .

JOURNAL OF APPLIED POLYMER SCIENCE, 1991, 42 (06) :1711-1720

[9]

NAKAHARA H, UNPUB

[10] POSITRONIUM FORMATION AT FREE-VOLUME SITES IN THE AMORPHOUS REGIONS OF SEMICRYSTALLINE PEEK [J].

NAKANISHI, H ;

JEAN, YC ;

SMITH, EG ;

SANDRECZKI, TC .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1989, 27 (07) :1419-1424

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