Simple synthesis of amphiphilic poly(3-hydroxy alkanoate)s with pendant hydroxyl and carboxylic groups via thiol-ene photo click reactions

Biodegradable polymers gained worldwide attention among researchers because of environmental and petroleum reserve limitation issues. In this manner, poly (3-hydroxyalkanoate)s, PHAs, are very useful materials from the point of this view. They can be easily obtained by using several bacteria from renewable substrate such as sugar, plant oils and as well as synthetic chemicals. The improvement of their mechanical properties and enhance hydrophilic character are still main challenge of the polymer scientists. Herein we report the thiol-ene photo click reactions of the unsaturated medium chain length PHAs produced by using Pseudomonas oleovorans from 10-undecenoic acid, octanoic acid and/or soybean oily acids that are coded as poly(3-hydroxy undecenoate) (PHU), poly(3-hydroxy octanoate-co-undecenoate) (PHOU) and poly(3-hydroxy octanoate-co-soybean oil polymer) (PHOSy), respectively, in order to obtain their hydroxyl and carboxyl derivatives. The molecular weights of the modified PHAs obtained in this work were the same as those of the starting PHAs. Structural analysis of the PHA derivatives was performed by using 1H-, 13C, HMBC and HSQC NMR techniques. Melting and glass transitions of the hydroxyl and carboxyl derivatives of the microbial polyesters were found to be relatively higher than that of the starting unsaturated PHAs. © 2015 Elsevier Ltd. All rights reserved.

Eser Adı
[dc.title]
Simple synthesis of amphiphilic poly(3-hydroxy alkanoate)s with pendant hydroxyl and carboxylic groups via thiol-ene photo click reactions
Yazar
[dc.contributor.author]
Hazer, Baki
Yayın Yılı
[dc.date.issued]
2015
Yayıncı
[dc.publisher]
Elsevier Ltd
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
Biodegradable polymers gained worldwide attention among researchers because of environmental and petroleum reserve limitation issues. In this manner, poly (3-hydroxyalkanoate)s, PHAs, are very useful materials from the point of this view. They can be easily obtained by using several bacteria from renewable substrate such as sugar, plant oils and as well as synthetic chemicals. The improvement of their mechanical properties and enhance hydrophilic character are still main challenge of the polymer scientists. Herein we report the thiol-ene photo click reactions of the unsaturated medium chain length PHAs produced by using Pseudomonas oleovorans from 10-undecenoic acid, octanoic acid and/or soybean oily acids that are coded as poly(3-hydroxy undecenoate) (PHU), poly(3-hydroxy octanoate-co-undecenoate) (PHOU) and poly(3-hydroxy octanoate-co-soybean oil polymer) (PHOSy), respectively, in order to obtain their hydroxyl and carboxyl derivatives. The molecular weights of the modified PHAs obtained in this work were the same as those of the starting PHAs. Structural analysis of the PHA derivatives was performed by using 1H-, 13C, HMBC and HSQC NMR techniques. Melting and glass transitions of the hydroxyl and carboxyl derivatives of the microbial polyesters were found to be relatively higher than that of the starting unsaturated PHAs. © 2015 Elsevier Ltd. All rights reserved.
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]
3-Thio glycerol
Konu Başlıkları
[dc.subject]
HMBC-NMR technique
Konu Başlıkları
[dc.subject]
Mercapto propionic acid
Konu Başlıkları
[dc.subject]
Thiol-ene photo click reaction
Konu Başlıkları
[dc.subject]
Unsaturated PHAs
Künye
[dc.identifier.citation]
Hazer, B. (2015). Simple synthesis of amphiphilic poly(3-hydroxy alkanoate)s with pendant hydroxyl and carboxylic groups via thiol-ene photo click reactions. Polymer Degradation and Stability, 119, 159-166. doi:10.1016/j.polymdegradstab.2015.04.024
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
0141-3910
Sponsor YAYINCI
[dc.description.sponsorship]
Bülent Ecevit Üniversitesi Fundamental Research Fund of Shandong University: - 2012-10-03-13 211T016
Sponsor YAYINCI
[dc.description.sponsorship]
This work was supported by; both the Bülent Ecevit University Research Fund (#BEU- 2012-10-03-13 ) and TUBITAK (Grant # 211T016 ). The Authors thank to Mahmut Köse and İbrahim Demirtaş for their valuable discussion; Elvan Akyol for GPC measurements. Appendix A
İlk Sayfa Sayısı
[dc.identifier.startpage]
159
Son Sayfa Sayısı
[dc.identifier.endpage]
166
Dergi Adı
[dc.relation.journal]
Polymer Degradation and Stability
Dergi Cilt Bilgisi
[dc.identifier.volume]
119
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1016/j.polymdegradstab.2015.04.024
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/7532
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derivatives poly(3-hydroxy obtained carboxyl hydroxyl starting unsaturated respectively weights and/or soybean molecular undecenoate) octanoate-co-undecenoate) (PHOU) octanoate-co-soybean obtain polymer) (PHOSy) modified microbial reserved rights Elsevier higher relatively polyesters transitions Melting techniques performed analysis Structural octanoic Biodegradable
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