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

来源：

MACROMOLECULAR SYMPOSIA | 1997年 / 117卷

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

页码：153 / 165

页数：13