Synthesis of asymmetric star-branched block copolymers based on PS, PTHF, and PMMA by combination of cationic ring opening polymerization and redox polymerization methods

Asymmetric star-branched block copolymers based on polystyrene (PS), polytetrahydrofuran (PTHF), and poly(methyl methacrylate) (PMMA) were synthesized by a combination of cationic ring opening polymerization and redox polymerization methods in two steps. At first, cationic ring opening polymerization of THF was initiated by using chain-end-multifunctionalized polystyrenes with 2, 4, and 8 benzyl bromide moieties as initiators in the presence of AgSbF6 at 30°C to obtain 3-, 5-, and 9-arm AB 2/ AB4, and AB8 type asymmetric star-branched polymers consisting of PS (A) and PTHF-OH (B) segments. Polymers obtained in this way were characterized by gel permeation chromatography, FTIR,1H NMR, and thermal analysis (DSC and TGA). At second step, redox polymerization of methyl methacrylate was initiated by using these characterized asymmetric starbranched polymers as macroinitiators in the presence of Ce(IV) salt at 40°C to obtain PS-s-(PTHF-b-PMMA)n(n = 2, 4, and 8) asymmetric star-branched block copolymers. PS-s(PTHF-b-PMMA)n (n = 2, 4, and 8) asymmetric starbranched block copolymers obtained were purified by fractional precipitation method before characterization. © 2006 Wiley Periodicals, Inc.

Dergi Adı Journal of Applied Polymer Science
Dergi Cilt Bilgisi 102
Dergi Sayısı 1
Sayfalar 516 - 522
Yayın Yılı 2006
Eser Adı
[dc.title]
Synthesis of asymmetric star-branched block copolymers based on PS, PTHF, and PMMA by combination of cationic ring opening polymerization and redox polymerization methods
Yazar
[dc.contributor.author]
Arslan, Hülya
Yazar
[dc.contributor.author]
Hazer, Baki
Yazar
[dc.contributor.author]
Higashihara, Tomota
Yazar
[dc.contributor.author]
Hirao, Akira
Yayın Yılı
[dc.date.issued]
2006
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
Asymmetric star-branched block copolymers based on polystyrene (PS), polytetrahydrofuran (PTHF), and poly(methyl methacrylate) (PMMA) were synthesized by a combination of cationic ring opening polymerization and redox polymerization methods in two steps. At first, cationic ring opening polymerization of THF was initiated by using chain-end-multifunctionalized polystyrenes with 2, 4, and 8 benzyl bromide moieties as initiators in the presence of AgSbF6 at 30°C to obtain 3-, 5-, and 9-arm AB 2/ AB4, and AB8 type asymmetric star-branched polymers consisting of PS (A) and PTHF-OH (B) segments. Polymers obtained in this way were characterized by gel permeation chromatography, FTIR,1H NMR, and thermal analysis (DSC and TGA). At second step, redox polymerization of methyl methacrylate was initiated by using these characterized asymmetric starbranched polymers as macroinitiators in the presence of Ce(IV) salt at 40°C to obtain PS-s-(PTHF-b-PMMA)n(n = 2, 4, and 8) asymmetric star-branched block copolymers. PS-s(PTHF-b-PMMA)n (n = 2, 4, and 8) asymmetric starbranched block copolymers obtained were purified by fractional precipitation method before characterization. © 2006 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]
Asymmetric star-branched block copolymers
Konu Başlıkları
[dc.subject]
Cationic ring opening polymerization
Konu Başlıkları
[dc.subject]
Ce (IV)
Konu Başlıkları
[dc.subject]
Redox polymerization
Künye
[dc.identifier.citation]
Arslan, H., Hazer, B., Higashihara, T. ve Hirao, A. (2006). Synthesis of asymmetric star-branched block copolymers based on PS, PTHF, and PMMA by combination of cationic ring opening polymerization and redox polymerization methods. Journal of Applied Polymer Science, 102(1), 516-522. doi:10.1002/app.24250
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
0021-8995
İlk Sayfa Sayısı
[dc.identifier.startpage]
516
Son Sayfa Sayısı
[dc.identifier.endpage]
522
Dergi Adı
[dc.relation.journal]
Journal of Applied Polymer Science
Dergi Sayısı
[dc.identifier.issue]
1
Dergi Cilt Bilgisi
[dc.identifier.volume]
102
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1002/app.24250
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/7761
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
22
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
19 Şubat 2024 17:02
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Tıklayınız
asymmetric polymerization copolymers star-branched obtain initiated obtained starbranched presence polymers opening cationic characterized second permeation analysis chromatography thermal Asymmetric fractional Periodicals characterization before method precipitation purified methyl PS-s(PTHF-b-PMMA)n PS-s-(PTHF-b-PMMA)n(n Ce(IV) macroinitiators methacrylate Polymers synthesized methods
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