INVESTIGATION OF THE PHASE-STRUCTURE OF POLY(D(-)3-HYDROXYBUTYRATE) ATACTIC POLY(METHYL METHACRYLATE)BLENDS BY SMALL-ANGLE X-RAY-SCATTERING

被引:21
作者
CANETTI, M
SADOCCO, P
SICILIANO, A
SEVES, A
机构
关键词
POLY(HYDROXYBUTYRATE); POLY(METHYL METHACRYLATE); BLENDS;
D O I
10.1016/0032-3861(94)90324-7
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Blends of poly(D(-)3-hydroxybutyrate) (PHB) and atactic poly(methyl methacrylate) (aPMMA) were isothermally cold-crystallized from homogeneous amorphous samples obtained by quenching. X-ray techniques were employed to investigate the phase structure of the cold-crystallized blends. The long period distance and the amorphous interlamellar distance increased with increasing aPMMA content in the blends, while the thickness of the crystalline lamellae was quite constant for the blends, and higher than for pure PHB. These results indicate that during isothermal cold-crystallization the aPMMA component is segregated in the amorphous PHB interlamellar regions.
引用
收藏
页码:2884 / 2887
页数:4
相关论文
共 17 条
[1]  
ALEXANDER LE, 1969, XRAY DIFFRACTION MET, P137
[2]   ANALYSIS OF THE GLASS-TRANSITION TEMPERATURE OF MISCIBLE POLYMER BLENDS [J].
AUBIN, M ;
PRUDHOMME, RE .
MACROMOLECULES, 1988, 21 (10) :2945-2949
[3]   ISODIMORPHISM IN BACTERIAL POLY(BETA-HYDROXYBUTYRATE-CO-BETA-HYDROXYVALERATE) [J].
BLUHM, TL ;
HAMER, GK ;
MARCHESSAULT, RH ;
FYFE, CA ;
VEREGIN, RP .
MACROMOLECULES, 1986, 19 (11) :2871-2876
[4]   NEW METHOD FOR EVALUATION OF SMALL-ANGLE SCATTERING DATA [J].
GLATTER, O .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1977, 10 (OCT1) :415-421
[5]   EVALUATION OF SMALL-ANGLE SCATTERING DATA FROM LAMELLAR AND CYLINDRICAL PARTICLES BY THE INDIRECT TRANSFORMATION METHOD [J].
GLATTER, O .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1980, 13 (DEC) :577-584
[6]  
GLATTER O, 1982, SMALL ANGLE XRAY SCA, P119
[7]   SPHERULITIC CRYSTALLIZATION FROM MELT .I. FRACTIONATION + IMPURITY SEGREGATION + THEIR INFLUENCE ON CRYSTALLINE MORPHOLOGY [J].
KEITH, HD ;
PADDEN, FJ .
JOURNAL OF APPLIED PHYSICS, 1964, 35 (04) :1270-&
[8]   CRYSTALLINE AND THERMAL-PROPERTIES OF BACTERIAL COPOLYESTERS - POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE) AND POLY(3-HYDROXYBUTYRATE-CO-4-HYDROXYBUTYRATE) [J].
KUNIOKA, M ;
TAMAKI, A ;
DOI, Y .
MACROMOLECULES, 1989, 22 (02) :694-697
[9]  
SADOCCO P, 1993, POLYMER, V34, P3369
[10]   NEW SMALL-ANGLE X-RAY CAMERA WITH 2 GLASS BLOCKS [J].
SCHNABEL, E ;
RODE, B ;
HOSEMANN, R .
JOURNAL OF APPLIED PHYSICS, 1972, 43 (08) :3237-+