Synthesis and characterization of the novel thermoresponsive conjugates based on Poly(3-hydroxy alkanoates)

Novel thermoresponsive polymer conjugates based on microbial polyesters and poly-N-isopropyl acryl amide, PNIPAM, have been reported. The unsaturated poly-3-hydroxy alkanoates, poly (3-hydroxy undecenoate), PHU, and 1:1 mixture of 10-undecenoic acid and soy oil acids, PHU-Sy, were brominated by using bromine in the dark, at room temperature. Brominated PHAs were transformed to macro reversible addition-fragmentation chain transfer (RAFT) agents via the substitution reaction with potassium ethyl xanthate. RAFT polymerization of N-isopropyl acryl amide, NIPAM, was initiated by the PHA-derivative containing xanthate pendant groups in order to obtain brush type PHA-g-PNIPAM thermo responsive amphiphilic graft copolymers. The water uptake of the PHU-g-PNIPAM and PHU-Sy-g-PNIPAM amphiphilic graft copolymers changed from 50 % to completely soluble in water. Structural and thermal characterization of the novel conjugates were carried out by using 1H NMR, GPC, DSC and TGA techniques. Graphical Abstract: [Figure not available: see fulltext.] © 2014 Springer Science+Business Media New York.

Eser Adı
[dc.title]
Synthesis and characterization of the novel thermoresponsive conjugates based on Poly(3-hydroxy alkanoates)
Yazar
[dc.contributor.author]
Toraman, Tuğba
Yazar
[dc.contributor.author]
Hazer, Baki
Yayın Yılı
[dc.date.issued]
2014
Yayıncı
[dc.publisher]
Springer New York LLC
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
Novel thermoresponsive polymer conjugates based on microbial polyesters and poly-N-isopropyl acryl amide, PNIPAM, have been reported. The unsaturated poly-3-hydroxy alkanoates, poly (3-hydroxy undecenoate), PHU, and 1:1 mixture of 10-undecenoic acid and soy oil acids, PHU-Sy, were brominated by using bromine in the dark, at room temperature. Brominated PHAs were transformed to macro reversible addition-fragmentation chain transfer (RAFT) agents via the substitution reaction with potassium ethyl xanthate. RAFT polymerization of N-isopropyl acryl amide, NIPAM, was initiated by the PHA-derivative containing xanthate pendant groups in order to obtain brush type PHA-g-PNIPAM thermo responsive amphiphilic graft copolymers. The water uptake of the PHU-g-PNIPAM and PHU-Sy-g-PNIPAM amphiphilic graft copolymers changed from 50 % to completely soluble in water. Structural and thermal characterization of the novel conjugates were carried out by using 1H NMR, GPC, DSC and TGA techniques. Graphical Abstract: [Figure not available: see fulltext.] © 2014 Springer Science+Business Media New York.
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]
Poly (3-hydroxy alkanoate)s
Konu Başlıkları
[dc.subject]
Poly (3-hydroxy undecenoate)
Konu Başlıkları
[dc.subject]
Poly (N-isopropyl acryl amide)
Konu Başlıkları
[dc.subject]
Soybean oil-polyester
Konu Başlıkları
[dc.subject]
Thermo responsive PHA conjugate
Künye
[dc.identifier.citation]
Toraman, T. ve Hazer, B. (2014). Synthesis and characterization of the novel thermoresponsive conjugates based on poly(3-hydroxy alkanoates). Journal of Polymers and the Environment, 22(2), 159-166. doi:10.1007/s10924-014-0646-y
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
1566-2543
Sponsor YAYINCI
[dc.description.sponsorship]
-2012-10-03-13 211T016
Sponsor YAYINCI
[dc.description.sponsorship]
Acknowledgments This work was supported by; both the Bulent Ecevit University Research Fund (#BEU-2012-10-03-13) and TUBITAK (Grant # 211T016). The Author thanks to Kevin Cavicchi (University of Akron) for helpful discussions and Ferhat Matur for his technical assistance.
İlk Sayfa Sayısı
[dc.identifier.startpage]
159
Son Sayfa Sayısı
[dc.identifier.endpage]
166
Dergi Adı
[dc.relation.journal]
Journal of Polymers and the Environment
Dergi Sayısı
[dc.identifier.issue]
2
Dergi Cilt Bilgisi
[dc.identifier.volume]
22
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1007/s10924-014-0646-y
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/7748
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
13
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
17 Nisan 2024 09:52
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copolymers amphiphilic conjugates xanthate thermo pendant Structural groups soluble completely changed responsive obtain PHU-Sy-g-PNIPAM PHU-g-PNIPAM uptake PHA-g-PNIPAM thermal Science+Business Springer fulltext available [Figure characterization Abstract Graphical techniques carried PHA-derivative containing potassium initiated alkanoates 10-undecenoic mixture
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