A Well-Defined Amphiphilic Polymer Conetwork from Sequence Control of the Cross-Linking in Polymer Chains

作者：Zhou, Chao; Deng, Linhong; Yao, Fang; Xu, Liqun; Zhou, Jian; Fu, Guo Dong^*

来源：Industrial & Engineering Chemistry Research, 2014, 53(49): 19239-19248.

DOI：10.1021/ie503649t

• LIVING RADICAL POLYMERIZATION
• SOLID-STATE NMR
• METHACRYLATE-BLOCK-(2,3 PROPANDIOL-1-METHACRYLATE-STAT-ETHANDIOL DIMETHACRYLATE))
• RING-OPENING POLYMERIZATION
• RAFT POLYMERIZATION
• MODEL CONETWORKS
• CLICK CHEMISTRY
• SWELLING BEHAVIOR
• DERMAL FIBROBLASTS
• BLOCK-COPOLYMERS

Well-defined amphiphilic polymer conetworks with precisely controlled number and position of cross-links were prepared by copper-catalyzed azidealkyne cycloaddition (CuAAC) using linear polystyrene (PS) and poly(ethylene glycol) (PEG) as the building blocks. In this approach, linear polystyrene containing a specific number of bromo groups at a predetermined position of polymer chains was synthesized by multistep reversible additionfragmentation chain transfer polymerization and chain extension using styrene and N-bromopropyl maleimide (PBMI) as the monomers. Subsequently, the bromo groups were transformed into the azido moieties via nucleophilic substitution. The well-defined linear multialkynyl PEG was prepared from PEG diglycidyl ether and propargylamine via epoxy-amine chain extension. The as-prepared PSPEG amphiphilic polymer conetworks showed unique hydrophilic and hydrophobic phase separation with a variable swelling capacity and rheological behavior in both polar and nonpolar solvents and exhibited excellent mechanical properties with increased cross-linking density.

• 出版日期2014-12-10
• 单位西南大学; 江苏大学; 常州大学; 东南大学