Synthesis of Fluorinated Amphiphilic Block Copolymers Based on PEGMA, HEMA, and MMA via ATRP and CuAAC Click Chemistry


Erol F. E. , Sinirlioglu D., Cosgun S., Muftuoglu A. E.

INTERNATIONAL JOURNAL OF POLYMER SCIENCE, 2014 (SCI İndekslerine Giren Dergi)

  • Basım Tarihi: 2014
  • Doi Numarası: 10.1155/2014/464806
  • Dergi Adı: INTERNATIONAL JOURNAL OF POLYMER SCIENCE

Özet

Synthesis of fluorinated amphiphilic block copolymers via atom transfer radical polymerization (ATRP) and Cu(I) catalyzed Huisgen 1,3-dipolar cycloaddition (CuAAC) was demonstrated. First, a PEGMA and MMA based block copolymer carrying multiple side-chain acetylene moieties on the hydrophobic segment for postfunctionalization was carried out. This involves the synthesis of a series of P(HEMA-co-MMA) random copolymers to be employed as macroinitiators in the controlled synthesis of P(HEMA-co-MMA)-block-PPEGMA block copolymers by using ATRP, followed by a modification step on the hydroxyl side groups of HEMA via Steglich esterification to afford propargyl side-functional polymer, alkyne-P(HEMA-co-MMA)-block-PPEGMA. Finally, click coupling between side-chain acetylene functionalities and 2,3,4,5,6-pentafluorobenzyl azide yielded fluorinated amphiphilic block copolymers. The obtained polymers were structurally characterized by H-1-NMR, F-19-NMR, FT-IR, and GPC. Their thermal characterizations were performed using DSC and TGA.