A block copolymer including a plurality of polymeric chains and a plurality of cross-linking compound residues linking together the plurality of polymeric chains. The plurality of polymeric chains forms a plurality of hard domains and a plurality of soft domains. Each polymeric chain includes a plurality of soft segments and a plurality of hard segments. The plurality of soft segments includes a polyisobutylene diol or diamine residue. The plurality of soft segments forms the plurality of soft domains. The plurality of hard segments including a diisocyanate residue. The plurality of hard segments forms the plurality of hard domains. The cross-linking compound residues link together the hard segments of the plurality of polymeric chains.
一种嵌段共聚物,包括多条聚合物链和连接多条聚合物链的多个交联化合物残基。多条聚合物链形成多个硬域和多个软域。每条聚合物链包括多个软段和多个硬段。多个软段包括聚异
丁烯二醇或二胺残基。多个软段形成多个软域。多个硬段包括二
异氰酸酯残留物。多个硬段形成多个硬域。交联化合物残基将多个聚合物链的硬段连接在一起。