Preparation and crystalline transformation of functionalized poly(1-butene) containing PFPU and mPEG side chain.

ABSTRACT: A series of 1-butene/pentafluorophenylundec-1-ene ester random copolymers were synthesized under the Ziegler-Natta catalyst system. The content of the pentafluorophenyl (PFP) group in the copolymer can reach up to 0.59 mol%. The DSC test found that the PFP groups attached to the PB main chain retard the crystalline transformation of Form II to Form I. Nucleophilic aromatic substitutions of pentafluorophenyl ester occurred with biocompatible poly(ethylene glycol) methyl ether (mPEG) introduced into the side chain of PB under very mild conditions. The results show that not only is the crystallization rate of mPEG functionalized PB increased, but also T _m, T _c, χ _c and the crystalline phase transition rate of Form II to Form I are also enh

SUBMITTER: Li C 

PROVIDER: S-EPMC9043740 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature