Reversible gels of synthetic polymers: Phase relations, formation mechanisms and structure

被引：7

作者：

Berghmans, H ^{[1
]}

Aerts, L ^{[1
]}

Buyse, K ^{[1
]}

Deberdt, F ^{[1
]}

Roels, T ^{[1
]}

De Rudder, J ^{[1
]}

Vereecke, S ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Lab Polymer Res, B-3001 Heverlee, Belgium

来源：

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1998年 / 102卷 / 11期

关键词：

gels; phase transitions; polymers; solutions;

D O I：

10.1002/bbpc.19981021127

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：

The complex problem of thermoreversible gelation of solutions of synthetic polymers is discussed. Several possible mechanisms, based on supramolecular structure formation in solution, are discussed. The gelation of polyethylene solutions illustrates the structure formation through lamellar, folded ch:lin crystallization. Gelation of solutions of stereoisomers of polystyrene and poly(methyl methacrylate) is more complex and two mechanisms can are proposed. The complex temperature-concentration phase diagrams of syndiotactic polystyrene/solvent systems illustrate the competition between gelation by crystallization and the formation of elastic gels. The influence of chain conformation, participation of the solvent in the structure formation and the influence of solvent quality is discussed. Insight in the formation mechanism of elastic gels is obtained through the study of the gelation of solutions of syndiotactic poly(methyl methacrylate).

引用

页码：1654 / 1659

页数：6

共 30 条

[1]

AERTS L, 1992, THESIS LEUVEN

[2] THERMOREVERSIBLE GELATION OF SYNDIOTACTIC POLY(METHYL METHACRYLATE) [J].

BERGHAMS, H ;

DONKERS, A ;

FRENAY, L ;

STOKS, W ;

DESCHRYVER, FE ;

MOLDENAERS, P ;

MEWIS, J .

POLYMER, 1987, 28 (01) :97-102

[3] PHASE-BEHAVIOR AND STRUCTURE FORMATION IN SOLUTIONS OF VINYL-POLYMERS [J].

BERGHMANS, H ;

DEBERDT, F .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1994, 348 (1686) :117-130

[4]

BERGHMANS H, 1986, INTEGRATION FUNDAMEN, P296

[5]

BERGHMANS H, 1986, INTEGRATION FUNDAMEN, P218

[6]

BERGHMANS H, 1993, CALORIMETRY THERMAL

[7] THERMOREVERSIBLE GELATION OF SOLUTIONS OF SYNDIOTACTIC POLY(METHYL METHACRYLATE) IN TOLUENE - A 2-STEP MECHANISM [J].

BERGHMANS, M ;

THIJS, S ;

CORNETTE, M ;

BERGHMANS, H ;

DESCHRYVER, FC ;

MOLDENAERS, P ;

MEWIS, J .

MACROMOLECULES, 1994, 27 (26) :7669-7676

[8] STUDY OF POLYMER GELATION BY FLUORESCENCE SPECTROSCOPY [J].

BERGHMANS, M ;

GOVAERS, S ;

BERGHMANS, H ;

DESCHRYVER, FC .

POLYMER ENGINEERING AND SCIENCE, 1992, 32 (20) :1466-1470

[9] THERMOREVERSIBLE GELATION OF ISOTACTIC POLY(STYRENE) STUDIED BY FLUORESCENCE SPECTROSCOPY [J].

BERGHMANS, M ;

GOVAERS, S ;

DESCHRYVER, FC ;

BERGHMANS, H .

CHEMICAL PHYSICS LETTERS, 1993, 205 (2-3) :140-144

[10]

BUYSE K, UNPUB MACROMOLECULES

← 1 2 3 →