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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.
| Dergi Adı | Journal of Polymers and the Environment |
| Dergi Cilt Bilgisi | 22 |
| Dergi Sayısı | 2 |
| Sayfalar | 159 - 166 |
| Yayın Yılı | 2014 |
| 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 |