Synthesis and characterization of poly(vinyl chloride-graft-2-vinylpyridine) graft copolymers using a novel macroinitiator by reversible addition-fragmentation chain transfer polymerization
Yazarlar (6)
Prof. Dr. Temel Öztürk Giresun Üniversitesi, Türkiye
Doç. Dr. Melahat Göktaş Yüzüncü Yıl Üniversitesi, Türkiye
Doç. Dr. Bedrettin SAVAŞ Kafkas Üniversitesi, Türkiye
Mustafa Işıklar
Doç. Dr. Mehmet Nuri Atalar Iğdır Üniversitesi, Türkiye
Baki Hazer
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı e-Polymers (Q4)
Dergi ISSN 1618-7229 Dergi Bilgileri (2014)
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 01-2014
Cilt / Sayı / Sayfa 14 / 1 / 27–34 DOI 10.1515/epoly-2013-0011
Makale Linki https://www.degruyter.com/view/j/epoly.2014.14.issue-1/epoly-2013-0011/epoly-2013-0011.xml
UAK Araştırma Alanları
Polimer Bilimi
Özet
AbstractSynthesis of poly(vinyl chloride-graft-2-vinylpyridine) graft copolymers was carried out by reversible addition-fragmentation chain transfer (RAFT) polymerization of 2-vinylpyridine using a novel macroinitiator (RAFT macroinitiator). For this purpose, RAFT macroinitiator was obtained from the potassium salt of ethyl xanthogenate and poly(vinyl chloride) (PVC). Then the graft copolymers were synthesized by using RAFT macroinitiator and 2-vinylpyridine. The principal parameters such as monomer concentration, initiator concentration, and polymerization time that affect the polymerization reaction were studied. The effect of the reaction conditions on the heterogeneity index and molecular weight was also investigated. The block lengths of the graft copolymers were calculated by using 1H nuclear magnetic resonance (1H NMR) spectra. The block lengths of the copolymers could be adjusted by varying the monomer and initiator concentrations. The characterizations of the samples were carried out by using 1H NMR, Fourier-transform infrared spectroscopy, gel-permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, and fractional precipitation (γ value) techniques. RAFT polymerization is used to control the polymerization of 2-vinylpyridine over a broad range of molecular weights.
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