Abstract
A series of polyhydroxyether-polydimethylsiloxane (PDMS) graft copolymers were analysed and tested to determine the effects of factors such as the number-average molecular weight ( M n ) of the PDMS segments, overall PDMS content and nature of the graft linkage on thermal characteristics, hydrolytic stability, tensile properties and morphology. D.s.c. measurements showed that the copolymers exhibit two-phase morphology even at very low PDMS M n (<1000 g mol −1). Despite the presence of the silyl ether linkage, such copolymers display quite good hydrolytic stability. When the PDMS M n is in the region of 5000 g mol −1, changes in the overall composition have only a marginal effect on thermal stability.
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