Ellipsoidal core-shell cylindrical microphases in PS-b-PB-b-PCL triblock copolymers with a crystallizable matrix

被引:19
作者
Balsamo, V
Stadler, R
机构
[1] UNIV MAINZ,INST ORGAN CHEM,D-55099 MAINZ,GERMANY
[2] UNIV SIMON BOLIVAR,DPTO CIENCIAS MAT,GRP POLIMEROS USB,CARACAS,VENEZUELA
关键词
BLOCK-COPOLYMERS; EPSILON-CAPROLACTONE; DIBLOCK COPOLYMERS; MORPHOLOGY; BUTADIENE; THERMODYNAMICS; STYRENE;
D O I
10.1002/masy.19971170119
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Polystyrene-block-polybutadiene-block-poly(epsilon-caprolactone) SEC triblock copolymers with a PCL matrix exhibit microphase separation into three different phases within the spherulitic superstructures. Mixing of the PS-block can occur upon melting of the PCL-block if the molecular weight is row enough. Even though the crystallization takes place well below the PS-glass transition, a deformation of the amorphous microphases into ellipsoidal core-shell cylindrical microdomains is observed by TEM. These copolymers have mechanical properties which are dominated by the PCL(poly(epsilon-caprolactone)) matrix with an influence of the amorphous blocks.
引用
收藏
页码:153 / 165
页数:13
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