Structure formation in polymer solutions

被引：16

作者：

Berghmans, H ^{[1
]}

De Cooman, R ^{[1
]}

De Rudder, J ^{[1
]}

Koningsveld, R ^{[1
]}

机构：

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

来源：

POLYMER | 1998年 / 39卷 / 19期

关键词：

liquid-liquid phase separation; porous composite fibres; porous syndiotactic polystyrene;

D O I：

10.1016/S0032-3861(97)10141-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The formation of porous materials by thermally induced phase separation is discussed and two basic mechanisms are presented: interference of a liquid-liquid demixing with a glass transition and/or crystallization. The possibility of formation of porous 'composite' fibres using a blend of two non-compatible polymers is illustrated. The formation of these fibres during extrusion leads to a fibrillar morphology with the porosity oriented along the fibre axis. The formation of porous syndiotactic polystyrene with different degrees of supramolecular organization is discussed. The transformation on heating of the initially amorphous, glassy material into the gamma-phase and then into the beta-phase makes it possible to maintain the demixed situation up to temperatures far above the Theta-temperature of this polymer-solvent system. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：4621 / 4629

页数：9

共 38 条

[1]

AERTS L, 1993, MAKROMOL CHEM, V194, P2697

[2]

ARNAUTS J, 1987, POLYM COMMUN, V28, P66

[3]

ARNAUTS J, 1990, POLYM NETWORKS, P35

[4] 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

[5] Spinning of hollow porous fibres via the TIPS mechanism [J].

Berghmans, S ;

Berghmans, H ;

Meijer, HEH .

JOURNAL OF MEMBRANE SCIENCE, 1996, 116 (02) :171-189

[6] PHASE-BEHAVIOR AND STRUCTURE FORMATION IN SOLUTIONS OF POLY(2,6-DIMETHYL-1,4-PHENYLENE ETHER) [J].

BERGHMANS, S ;

MEWIS, J ;

BERGHMANS, H ;

MEIJER, H .

POLYMER, 1995, 36 (16) :3085-3091

[7] ON THERMOREVERSIBLE GELS - THEIR CLASSIFICATION, RELATION TO PHASE-TRANSITIONS AND VITRIFICATION, THEIR MORPHOLOGY AND PROPERTIES [J].

CALLISTER, S ;

KELLER, A ;

HIKMET, RM .

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA, 1990, 39 :19-54

[8] STRUCTURAL STUDY OF SYNDIOTACTIC POLYSTYRENE .1. POLYMORPHISM [J].

CHATANI, Y ;

SHIMANE, Y ;

INOUE, Y ;

INAGAKI, T ;

ISHIOKA, T ;

IJITSU, T ;

YUKINARI, T .

POLYMER, 1992, 33 (03) :488-492

[9] STRUCTURAL STUDY ON SYNDIOTACTIC POLYSTYRENE .2. CRYSTAL-STRUCTURE OF MOLECULAR-COMPOUND WITH TOLUENE [J].

CHATANI, Y ;

SHIMANE, Y ;

INAGAKI, T ;

IJITSU, T ;

YUKINARI, T ;

SHIKUMA, H .

POLYMER, 1993, 34 (08) :1620-1624

[10] Thermoreversible gelation of syndiotactic polystyrene in benzene [J].

Daniel, C ;

Deluca, MD ;

Guenet, JM ;

Brulet, A ;

Menelle, A .

POLYMER, 1996, 37 (07) :1273-1280

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