SOL-GEL TRANSITION - A MODEL FOR PERCOLATION

被引：16

作者：

ADAM, M ^{[1
]}

DELSANTI, M ^{[1
]}

MUNCH, JP ^{[1
]}

DURAND, D ^{[1
]}

机构：

[1] UNIV MAINE,CHIM & PHYSICOCHIM MACROMOLEC LAB,CNRS,F-72017 LE MANS,FRANCE

来源：

PHYSICA A | 1990年 / 163卷 / 01期

关键词：

D O I：

10.1016/0378-4371(90)90317-L

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present experiment results obtained near the sol-gel transition of polyurethane copolymer clusters in which the chemical reaction is a polycondensation reaction. The exponent τ characteristic of the mass distribution and the exponent γ characteristic of the growth process of polymer clusters as the gelation threshold is approached are measured. The experimental values found, τ = 2.20 ± 0.04 and γ = 1.71 ± 0.06, are in good agreement with Monte Carlo simulations using the percolation model. Chemical gelation is a critical phenomenon of connectivity belonging to the same universality class as percolation. © 1990.

引用

页码：85 / 93

页数：9

共 7 条

[1] MECHANICAL MEASUREMENTS IN THE REACTION BATH DURING THE POLYCONDENSATION REACTION, NEAR THE GELATION THRESHOLD [J].

ADAM, M ;

DELSANTI, M ;

DURAND, D .

MACROMOLECULES, 1985, 18 (11) :2285-2290

[2] SIZE AND MASS DETERMINATION OF CLUSTERS OBTAINED BY POLYCONDENSATION NEAR THE GELATION THRESHOLD [J].

ADAM, M ;

DELSANTI, M ;

MUNCH, JP ;

DURAND, D .

JOURNAL DE PHYSIQUE, 1987, 48 (10) :1809-1818

[3] GELATION AND PERCOLATION - SWELLING EFFECT [J].

BOUCHAUD, E ;

DELSANTI, M ;

ADAM, M ;

DAOUD, M ;

DURAND, D .

JOURNAL DE PHYSIQUE, 1986, 47 (08) :1273-1277

[4]

DAOUD M, 1984, J PHYSIQUE LETT, V45, P199

[5] EVOLUTION OF POLYURETHANE GEL FRACTION NEAR THE GELATION THRESHOLD [J].

DURAND, D ;

NAVEAU, F ;

BUSNEL, JP ;

DELSANTI, M ;

ADAM, M .

MACROMOLECULES, 1989, 22 (04) :2011-2012

[6]

STAUFFER D, 1982, ADV POLYM SCI, V44, P103

[7]

Stauffer D., 1985, INTRO PERCOLATION TH, DOI DOI 10.1201/9781315274386

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