SYNDIOTACTIC POLY[(R,S)-BETA-HYDROXYBUTYRATE]ISOLATED FROM METHYLALUMINOXANE-CATALYZED POLYMERIZATION

被引：41

作者：

HOCKING, PJ ^{[1
]}

MARCHESSAULT, RH ^{[1
]}

机构：

[1] MCGILL UNIV,DEPT CHEM,3420 UNIV ST,MONTREAL H3A 2A7,QUEBEC,CANADA

来源：

POLYMER BULLETIN | 1993年 / 30卷 / 02期

关键词：

D O I：

10.1007/BF00296845

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly[(R,S)-A-hydroxybutyrate] was prepared via the methylaluminoxane-catalyzed polymerization of (R,S)-beta-butyrolactone, fractionated, and characterized by H-1 and C-13 nmr, gel permeation chromatography, differential scanning calorimetry, and x-ray diffraction. All the material isolated from these reactions was identified by nmr as poly(beta-hydroxybutyrate), but in each case, C-13 nmr showed that a portion of the material contained more syndiotactic than isotactic diads. Although this new syndiotactic material was low in molecular weight, it showed crystallinity by differential scanning calorimetry and x-ray diffraction, with d-spacings different in value and relative intensity from those of the isotactic polymer.

引用

页码：163 / 170

页数：8

共 50 条

[1] CRYSTALLIZATION BEHAVIOR OF PREDOMINANTLY SYNDIOTACTIC POLY(BETA-HYDROXYBUTYRATE) [J].

KEMNITZER, JE ;

GROSS, RA ;

MCCARTHY, SP ;

LIGGAT, J ;

BLUNDELL, DJ ;

COX, M .

JOURNAL OF ENVIRONMENTAL POLYMER DEGRADATION, 1995, 3 (01) :37-47

[2] PREPARATION OF PREDOMINANTLY SYNDIOTACTIC POLY(BETA-HYDROXYBUTYRATE) BY THE TRIBUTYLTIN METHOXIDE CATALYZED RING-OPENING POLYMERIZATION OF RACEMIC BETA-BUTYROLACTONE [J].

KEMNITZER, JE ;

MCCARTHY, SP ;

GROSS, RA .

MACROMOLECULES, 1993, 26 (06) :1221-1229

[3] ENZYMATIC DEGRADABILITY OF ISOTACTIC VERSUS SYNDIOTACTIC POLY(BETA-HYDROXYBUTYRATE) [J].

HOCKING, PJ ;

MARCHESSAULT, RH ;

TIMMINS, MR ;

SCHERER, TM ;

LENZ, RW ;

FULLER, RC .

MACROMOLECULAR RAPID COMMUNICATIONS, 1994, 15 (06) :447-452

[4] CHEMICAL SYNTHESIS OF POLY(BETA-HYDROXYBUTYRATE) BY THE POLYMERIZATION OF (R,S)-BETA-BUTYROLACTONE WITH ALUMINOXANE CATALYSTS [J].

LENZ, RW ;

YANG, J ;

WU, B ;

HARLAN, CJ ;

BARRON, AR .

CANADIAN JOURNAL OF MICROBIOLOGY, 1995, 41 :274-281

[5] THE PREPARATION AND CHARACTERIZATION OF [R]-POLY(BETA-HYDROXYBUTYRATE)-POLY(EPSILON-CAPROLACTONE) AND [R]-POLY(BETA-HYDROXYBUTYRATE)-POLY(LACTIDE) DEGRADABLE DIBLOCK COPOLYMERS [J].

REEVE, MS ;

MCCARTHY, SP ;

GROSS, RA .

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1992, 204 :102-PMSE

[6] PREPARATION AND CHARACTERIZATION OF (R)-POLY(BETA-HYDROXYBUTYRATE) POLY(EPSILON-CAPROLACTONE) AND (R)-POLY(BETA-HYDROXYBUTYRATE) POLY(LACTIDE) DEGRADABLE DIBLOCK COPOLYMERS [J].

REEVE, MS ;

MCCARTHY, SP ;

GROSS, RA .

MACROMOLECULES, 1993, 26 (05) :888-894

[7] STRUCTURAL STUDY OF ISOLATED POLY (BETA-HYDROXYBUTYRATE) GRANULES [J].

LAUZIER, C ;

MARCHESSAULT, RH ;

SMITH, P ;

CHANZY, H .

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1992, 203 :284-POLY

[8] HYDROLYTIC DEGRADATION OF ISOLATED POLY(BETA-HYDROXYBUTYRATE) GRANULES [J].

LAUZIER, C ;

REVOL, JF ;

DEBZI, EM ;

MARCHESSAULT, RH .

POLYMER, 1994, 35 (19) :4156-4162

[9] STRUCTURAL STUDY OF ISOLATED POLY(BETA-HYDROXYBUTYRATE) GRANULES [J].

LAUZIER, C ;

MARCHESSAULT, RH ;

SMITH, P ;

CHANZY, H .

POLYMER, 1992, 33 (04) :823-827

[10] THERMAL AND CRYSTALLINE STUDIES OF [R]-POLY(BETA-HYDROXYBUTYRATE)-POLY(EPSILON-CAPROLACTONE) AND [R]-POLY(BETA-HYDROXYBUTYRATE)-POLY(LACTIDE) DEGRADABLE DIBLOCK COPOLYMERS [J].

REEVE, MS ;

MCCARTHY, SP ;

GROSS, RA .

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