One-step synthesis of block-graft copolymers via simultaneous reversible-addition fragmentation chain transfer and ring-opening polymerization using a novel macroinitiator

One-step synthesis of block-graft copolymers by reversible addition-fragmentation chain transfer (RAFT) and ring-opening polymerization (ROP) by using a novel initiator was reported. Block-graft copolymers were synthesized in one-step by simultaneous RAFT polymerization of n-butylmethacrylate (nBMA) and ROP of ?-caprolacton (CL) in the presence of a novel macroinitiator (RAFT-ROP agent). For this purpose, first epichlorohydrin (EPCH) was polymerized by using H2SO4 via cationic ring-opening mechanism. And then a novel RAFT-ROP agent was synthesized by the reaction of potassium ethyl xanthogenate and polyepichlorohydrin (poly-EPCH). By using the RAFT-ROP agent, poly[CL-b-EPCH-b-CL-(g-nBMA)] block-graft copolymers were synthesized. The principal parameters such as monomer concentration, initiator concentration, and polymerization time that affect the one-step polymerization reaction were evaluated. The block lengths of the block-graft copolymers were calculated by using 1H-nuclear magnetic resonance (1H NMR) spectrum. The block length could be adjusted by varying the monomer and initiator concentrations. The characterization of the products was achieved using 1H NMR, Fourier-transform infrared spectroscopy, gel-permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, elemental analysis, and fractional precipitation (?) techniques. © 2013 Wiley Periodicals, Inc.

Eser Adı
[dc.title]
One-step synthesis of block-graft copolymers via simultaneous reversible-addition fragmentation chain transfer and ring-opening polymerization using a novel macroinitiator
Yazar
[dc.contributor.author]
Öztürk, Temel
Yazar
[dc.contributor.author]
Atalar, Mehmet Nuri
Yazar
[dc.contributor.author]
Göktaş, Melahat
Yazar
[dc.contributor.author]
Hazer, Baki
Yayın Yılı
[dc.date.issued]
2013
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
One-step synthesis of block-graft copolymers by reversible addition-fragmentation chain transfer (RAFT) and ring-opening polymerization (ROP) by using a novel initiator was reported. Block-graft copolymers were synthesized in one-step by simultaneous RAFT polymerization of n-butylmethacrylate (nBMA) and ROP of ?-caprolacton (CL) in the presence of a novel macroinitiator (RAFT-ROP agent). For this purpose, first epichlorohydrin (EPCH) was polymerized by using H2SO4 via cationic ring-opening mechanism. And then a novel RAFT-ROP agent was synthesized by the reaction of potassium ethyl xanthogenate and polyepichlorohydrin (poly-EPCH). By using the RAFT-ROP agent, poly[CL-b-EPCH-b-CL-(g-nBMA)] block-graft copolymers were synthesized. The principal parameters such as monomer concentration, initiator concentration, and polymerization time that affect the one-step polymerization reaction were evaluated. The block lengths of the block-graft copolymers were calculated by using 1H-nuclear magnetic resonance (1H NMR) spectrum. The block length could be adjusted by varying the monomer and initiator concentrations. The characterization of the products was achieved using 1H NMR, Fourier-transform infrared spectroscopy, gel-permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, elemental analysis, and fractional precipitation (?) techniques. © 2013 Wiley Periodicals, Inc.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
block copolymers
Konu Başlıkları
[dc.subject]
block length
Konu Başlıkları
[dc.subject]
block-graft copolymer
Konu Başlıkları
[dc.subject]
cationic polymerization
Konu Başlıkları
[dc.subject]
fractional precipitation
Konu Başlıkları
[dc.subject]
graft copolymers
Konu Başlıkları
[dc.subject]
macroinitiator
Konu Başlıkları
[dc.subject]
one-step polymerization
Konu Başlıkları
[dc.subject]
reversible-addition fragmentation chain transfer polymerization (RAFT)
Konu Başlıkları
[dc.subject]
ring-opening polymerization
Künye
[dc.identifier.citation]
Öztürk, T., Atalar, M. N., Göktaş, M. ve Hazer, B. (2013). One-step synthesis of block-graft copolymers via simultaneous reversible-addition fragmentation chain transfer and ring-opening polymerization using a novel macroinitiator. Journal of Polymer Science Part A: Polymer Chemistry, 51(12), 2651-2659. doi:10.1002/pola.26654
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
0887624X
İlk Sayfa Sayısı
[dc.identifier.startpage]
2651
Son Sayfa Sayısı
[dc.identifier.endpage]
2659
Dergi Adı
[dc.relation.journal]
Journal of Polymer Science, Part A: Polymer Chemistry
Dergi Sayısı
[dc.identifier.issue]
12
Dergi Cilt Bilgisi
[dc.identifier.volume]
51
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1002/pola.26654
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/6849
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Tıklayınız
polymerization copolymers synthesized initiator block-graft RAFT-ROP reaction analysis one-step concentration monomer ring-opening precipitation resonance length spectrum 1H-nuclear magnetic calculated lengths Periodicals evaluated affect varying adjusted gel-permeation fractional elemental calorimetry scanning differential techniques thermogravimetric chromatography spectroscopy
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