Block copolymers derived from polyisobutylene oligomers

The synthesis of polyvalent functionalized polyisobutylene (PIB) oligomers containing multiple polar groups via radical polymerization is described. Polymerizations from PIB macroinitiators via alkylborane intermediates can form block copolymers but the polar block is consistently larger than the PIB block and unless a hydrophobic monomer is used, the products are insoluble in alkanes. Block copolymer products from ATRP macroinitiators are...