SYNTHESIS AND DILUTE-SOLUTION PROPERTIES OF POLY(DIBLOCK MACROMONOMER)S

Poly[(styrene-b-isoprene) diblock macromonomer]s were prepared by free radical polymerization of corresponding vinylbenzyl-terminated dibloc k macromonomers (polyisoprene blocks = 21 similar to 26 wt%). Poly (di block macromonomer)s consisting of side cains ((M) over bar(n) = 3600 g mol(-1)) exhibited degrees of polymerization in the range 54 similar to 200. The radius of gyration (R-g) and the cross-sectional radius o f gyration (R-g,R-c) were determined by small-angle X-ray scattering. We studied the structural characterization of such pol(diblock macromo nomer)s in a dilute solution. (C) 1998 Elsevier Science Ltd. All right s reserved.