BROAD-BAND DIELECTRIC STUDY ON BINARY BLENDS OF BISPHENOL-A AND TETRAMETHYLBISPHENOL-A POLYCARBONATE

被引：62

作者：

KATANA, G ^{[1
]}

KREMER, F ^{[1
]}

FISCHER, EW ^{[1
]}

PLAETSCHKE, R ^{[1
]}

机构：

[1] BAYER AG,ZENT FORSCH POLYMERPHYS,W-5090 LEVERKUSEN,GERMANY

来源：

MACROMOLECULES | 1993年 / 26卷 / 12期

关键词：

D O I：

10.1021/ma00064a013

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Broadband dielectric spectroscopy (10(-1) to 10(7) Hz) and differential scanning calorimetry (DSC) have been used to study the alpha- and beta-relaxations in blends of bisphenol-A polycarbonate (BPA-PC) and tetramethylbisphenol-A polycarbonate (TMBPA-PC) in the temperature range from 93 to 553 K. All blends show one broadened alpha-relaxation as compared with the homopolymers. At temperatures below T(g) the beta-relaxations corresponding to both homopolymers are observed in the blends. The beta-relaxation strength obeys dilution laws with no indication of a critical TMBPA-PC concentration above which the beta-relaxation in BPA-PC is totally suppressed.

引用

页码：3075 / 3080

页数：6

共 46 条

[1] THERMALLY STIMULATED DISCHARGE CURRENT STUDIES ON LOW-TEMPERATURE RELAXATIONS IN POLYCARBONATE [J].

AOKI, Y ;

BRITTAIN, JO .

JOURNAL OF APPLIED POLYMER SCIENCE, 1976, 20 (10) :2879-2892

[2]

BAILY TT, 1981, MOL MOTIONS HIGH POL

[3] INTRACHAIN ROTATIONS IN THE POLY(ESTER CARBONATES) .2. QUANTUM-MECHANICAL CALCULATIONS ON LARGE MODEL MOLECULES FULLY REPRESENTING EACH TYPE OF PHENYL RING ENVIRONMENT [J].

BICERANO, J ;

CLARK, HA .

MACROMOLECULES, 1988, 21 (03) :597-603

[4] INTRACHAIN ROTATIONS IN POLY(ESTER CARBONATES) .1. QUANTUM-MECHANICAL CALCULATIONS ON THE MODEL MOLECULES 2,2-DIPHENYLPROPANE, DIPHENYL CARBONATE, AND PHENYL BENZOATE [J].

BICERANO, J ;

CLARK, HA .

MACROMOLECULES, 1988, 21 (03) :585-597

[5]

Boyer R. F., 1968, POLYM ENG SCI, V8, P161, DOI [10.1002/pen.760080302, DOI 10.1002/PEN.760080302]

[6]

BRAUWENS JC, 1971, J POLYM SCI, V33, P123

[7] POLYCARBONATE POLY(METHYL METHACRYLATE) BLENDS - THE ROLE OF MOLECULAR-INTERACTIONS ON MISCIBILITY AND ANTIPLASTICIZATION [J].

BUTZBACH, GD ;

WENDORFF, JH .

POLYMER, 1991, 32 (07) :1155-1159

[8] STRUCTURE AND PROPERTIES OF MULTIPHASE PLASTICS .1. COMPATIBILITY OF POLYMERS IN SOLID-STATE [J].

CASPER, R ;

MORBITZER, L .

ANGEWANDTE MAKROMOLEKULARE CHEMIE, 1977, 58 (FEB) :1-35

[9]

Ferry JD., 1980, VISCOELASTIC PROPERT

[10] TEMPERATURE-DEPENDENCE OF CHARACTERISTIC LENGTH FOR GLASS-TRANSITION [J].

FISCHER, EW ;

DONTH, E ;

STEFFEN, W .

PHYSICAL REVIEW LETTERS, 1992, 68 (15) :2344-2346

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