AbstractA triblock copolymer of the ABA type in which both components were crystallizable was synthesized. The A block was poly(ethylene oxide), PEO, and the B block, poly(dimethyl siloxane), PDMS. Upon cooling from the melt to liquid nitrogen temperature, the PEO block crystallized at around 40°C. When the copolymer was heated from −170°C after quenching, glass transition, crystallization and melting of the PDMS middle block were identified in the thermogram at −117°C, −74°C and −42°C, respectively. The degree of crystallinity of the PDMS block was estimated from the heat of fusion to be about 27. The growth rates of the PEO spherulites were reduced by the presence of the
展开▼
