H-1 NUCLEAR MAGNETIC-RELAXATION STUDY OF THE PHASE-STRUCTURE OF POLYSTYRENE-BLOCK-POLY(ETHYLENE PROPYLENE) COPOLYMER MICELLES

被引：8

作者：

GODWARD, J ^{[1
]}

HEATLEY, F ^{[1
]}

PRICE, C ^{[1
]}

机构：

[1] UNIV MANCHESTER,DEPT CHEM,MANCHESTER POLYMER CTR,MANCHESTER M13 9PL,LANCS,ENGLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1993年 / 89卷 / 18期

关键词：

D O I：

10.1039/ft9938903471

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：

H-1 NMR longitudinal and transverse relaxation measurements have been made as a function of temperature for micellar solutions of a polystyrene-block-poly(ethylene/propylene) copolymer in [H-2(1)]octane. Spin diffusion following selective inversion of protons from one component has been used to probe the extent of mixing of the blocks in the interface between the micelle core consisting of slightly swollen polystyrene and the micelle fringe consisting of highly solvated poly(ethylene/propylene). At 80-degrees-C a small degree of spin diffusion was detected, indicating that a mixed phase existed. A simple analysis of the magnitude of the effect showed that ca. 50% of the polystyrene lay in the boundary compared with only 3% of the poly(ethylene/propylene).

引用

页码：3471 / 3475

页数：5

共 14 条

[1]

BROWN RA, 1989, COMPREHENSIVE POLYM, V2, pCH6

[2] AN INVESTIGATION OF THE STRUCTURE OF MICELLES FORMED BY A POLYSTYRENE-B POLY(ETHYLENE PROPYLENE) BLOCK COPOLYMER IN PARAFFINIC SOLVENTS USING H-1 AND C-13-NUCLEAR MAGNETIC-RESONANCE [J].

CANDAU, F ;

HEATLEY, F ;

PRICE, C ;

STUBBERSFIELD, RB .

EUROPEAN POLYMER JOURNAL, 1984, 20 (07) :685-690

[3] PROTON MAGNETIC-RELAXATION STUDY OF MECHANISM AND SOLVENT DEPENDENCE OF MOLECULAR-MOTION OF POLYSTYRENE IN DILUTE-SOLUTION [J].

HEATLEY, F ;

WOOD, B .

POLYMER, 1978, 19 (12) :1405-1413

[4] PROTON LONGITUDINAL AND TRANSVERSE MAGNETIC-RELAXATION IN DILUTE AQUEOUS-SOLUTIONS OF POLY(OXYETHYLENE) ALKYL ETHERS [J].

HEATLEY, F ;

TEO, HH ;

BOOTH, C .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1984, 80 :981-991

[5]

HEATLEY F, 1986, ANNU REP NMR SPECTRO, V17, P179

[6]

MCBRIERTY VJ, 1989, COMPRHENSIVE POLYM S, V1, pCH19

[7]

PRICE C, 1983, POLYM COMMUN, V24, P326

[8] MICELLE FORMATION BY BLOCK CO-POLYMERS IN ORGANIC-SOLVENTS [J].

PRICE, C .

PURE AND APPLIED CHEMISTRY, 1983, 55 (10) :1563-1572

[9]

PRICE C, 1982, BLOCK COPOLYMERS, V1, pCH2

[10] THERMODYNAMICS OF MICELLE FORMATION BY POLYSTYRENE-BLOCK-POLY(ETHYLENE PROPYLENE) IN NORMAL-OCTANE AND 5-METHYLHEXAN-2-ONE [J].

QUINTANA, JR ;

VILLACAMPA, M ;

SALAZAR, R ;

KATIME, IA .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1992, 88 (18) :2739-2742

← 1 2 →