Photoinduced Synthesis of Block Copolymers by Combination of Atom Transfer Radical Polymerization and Photoinduced Radical Oxidation/Addition/Deactivation

Year 2018, Volume: 5 Issue: 2, 469 - 478, 01.01.2018

Mustafa Ciftci

https://doi.org/10.18596/jotcsa.396618

Abstract

A new polymerization mechanistic transformation
strategy, combining two different controlled polymerization techniques of
different modes, atom transfer radical polymerization (ATRP) and photoinduced
radical oxidation/addition/deactivation (PROAD), is successfully applied for
the synthesis of block copolymers. Thus, mono- or bi- bromide functional
polystyrenes (PS-Br or Br-PS-Br) synthesized by light induced ATRP were used as
macroinitiator for the living cationic polymerization of isobutyl vinyl ether
via PROAD process to give the corresponding block copolymers. In this way,
depending on the structure of the macroinitiator, AB or ABA type block
copolymers (PS-b-PIBVE or PIBVE-b-PS-b-PIBVE)
were formed. The final polymers and precursor polymers were characterized by
spectral and chromatographic analyses.

Keywords

Mechanistic transformation, block copolymer, ATRP, PROAD

References

• Assoc. Prof. Muhammet U. Kahveci, Istanbul Technical University, [e-mail]
• Assist. Prof. Omer Suat Taskın, Istanbul University, [e-mail]