Synthesis of Novel Aba-Type Amphiphilic Copolymers Including 2-Hydroxypropyl Propionate and N-Isobutoxymethyl Β-Alanine by Peg-Dialkoxide Initiated Hydrogen-Transfer Polymerization

Authors : Efkan CATIKER, Temel OZTURK, Bedrettin SAVAS, Mehmet ATAKAY, Bekir SALIH

Pages : 21-27

Doi:10.55549/epstem.1052148

View : 29 | Download : 24

Publication Date : 2021-12-31

Article Type : Research Paper

Abstract :Novel ABA-type amphiphilic copolymers were prepared using end-groups activated poly insert ignore into journalissuearticles values(ethylene glycol); insert ignore into journalissuearticles values(PEG); as an initiator of hydrogen-transfer polymerization insert ignore into journalissuearticles values(HTP);. For this purpose, PEG with 1450 Da insert ignore into journalissuearticles values(PEG-1450); was treated with the equivalent amount of sodium hydride to synthesize PEG with dialkoxide end-groups, namely PEG-dialkoxide. Using the PEG-dialkoxide as a macroinitiator, base-catalysed HTP of 2-hydroxypropyl acrylate insert ignore into journalissuearticles values(HPA);, and N-isobutoxymethyl acrylamide insert ignore into journalissuearticles values(BMA); were performed to achieve the novel ABA-type block copolymers. The copolymers were obtained with relatively high yields. Characterization of the ABA-type amphiphilic copolymers was carried out using FTIR and MALDI mass spectrometry. FTIR spectra of the copolymers exhibited some characteristic bands assigning to the functional groups arising from the mechanism of HTP. Molar mass distributions of the copolymers from the MALDI mass study pointed out that chain extensions by mass in each copolymer were almost equal. Hence, the MALDI mass spectra of the copolymers revealed that chain extensions of PEGs by HPA, and BMA units were successfully fulfilled.
Keywords : ABA type amphiphilic copolymer, Hydrogen transfer polymerization, Macroinitiator, Poly ethylene glycol,