The synthesis of PHA-g-(PTHF-b-PMMA) multiblock/graft copolymers by combination of cationic and radical polymerization

A new and promising method for the diversification of microbial polyesters based on chemical modifications is introduced. Poly(3-hydroxy alkanoate)-g-(poly(tetrahydrofuran)-b-poly(methyl methacrylate)) (PHAg-(PTHF-b-PMMA)) multigraft copolymers were synthesized by the combination of cationic and free radical polymerization. PHA-g-PTHF graft copolymer was obtained by the cationic polymerization of THF initiated by the carbonium cations generated from the chlorinated PHAs, poly(3-hydroxybutyrate-co-3- hydroxyvalerate) (PHBV), and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHx) in the presence of AgSbF 6. Therefore, PHA-g-PTHF graft copolymers with hydroxyl ends were produced. In the presence of Ce +4 salt, these hydroxyl ends of the graft copolymer can initiate the redox polymerization of MMA to obtain PHA-g-(PTHF-b-PMMA) multigraft copolymer. Polymers obtained were purified by fractional precipitation. In this manner, their ?-values (volume ratio of nonsolvent to the solvent) were also determined. Their molecular weights were determined by GPC technique. The structures were elucidated using 1H-NMR and FTIR spectroscopy. Thermal analyses of the products were carried out using differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA). © 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2308-2317, 2009.

Eser Adı
[dc.title]
The synthesis of PHA-g-(PTHF-b-PMMA) multiblock/graft copolymers by combination of cationic and radical polymerization
Yazar
[dc.contributor.author]
Macit, Hülya
Yazar
[dc.contributor.author]
Hazer, Baki
Yazar
[dc.contributor.author]
Arslan, Hülya
Yazar
[dc.contributor.author]
Noda, Isao
Yayın Yılı
[dc.date.issued]
2009
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
A new and promising method for the diversification of microbial polyesters based on chemical modifications is introduced. Poly(3-hydroxy alkanoate)-g-(poly(tetrahydrofuran)-b-poly(methyl methacrylate)) (PHAg-(PTHF-b-PMMA)) multigraft copolymers were synthesized by the combination of cationic and free radical polymerization. PHA-g-PTHF graft copolymer was obtained by the cationic polymerization of THF initiated by the carbonium cations generated from the chlorinated PHAs, poly(3-hydroxybutyrate-co-3- hydroxyvalerate) (PHBV), and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHx) in the presence of AgSbF 6. Therefore, PHA-g-PTHF graft copolymers with hydroxyl ends were produced. In the presence of Ce +4 salt, these hydroxyl ends of the graft copolymer can initiate the redox polymerization of MMA to obtain PHA-g-(PTHF-b-PMMA) multigraft copolymer. Polymers obtained were purified by fractional precipitation. In this manner, their ?-values (volume ratio of nonsolvent to the solvent) were also determined. Their molecular weights were determined by GPC technique. The structures were elucidated using 1H-NMR and FTIR spectroscopy. Thermal analyses of the products were carried out using differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA). © 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2308-2317, 2009.
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]
Bacterial polyesters
Konu Başlıkları
[dc.subject]
Block and graft copolymers
Konu Başlıkları
[dc.subject]
Poly(3-hydroxybutyrate- co-3-hydroxyhexanoate) (PHBHx)
Konu Başlıkları
[dc.subject]
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)
Konu Başlıkları
[dc.subject]
Poly(methyl methacrylate) (PMMA)
Konu Başlıkları
[dc.subject]
Polytetrahydrofuran (PTHF)
Künye
[dc.identifier.citation]
Macit, H., Hazer, B., Arslan, H. ve Noda, I. (2009). The synthesis of PHA-g-(PTHF-b-PMMA) multiblock/graft copolymers by combination of cationic and radical polymerization. Journal of Applied Polymer Science, 111(5), 2308-2317. doi:10.1002/app.29254
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
0021-8995
İlk Sayfa Sayısı
[dc.identifier.startpage]
2308
Son Sayfa Sayısı
[dc.identifier.endpage]
2317
Dergi Adı
[dc.relation.journal]
Journal of Applied Polymer Science
Dergi Sayısı
[dc.identifier.issue]
5
Dergi Cilt Bilgisi
[dc.identifier.volume]
111
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1002/app.29254
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/8285
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
18
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
19 Şubat 2024 19:28
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Tıklayınız
polymerization copolymer presence copolymers multigraft determined hydroxyl cationic PHA-g-PTHF obtained weights technique structures molecular solvent) nonsolvent (volume ?-values manner precipitation fractional elucidated carried 1H-NMR 2308-2317 Periodicals analysis thermogravimetric calorimeter scanning differential Polymers products analyses Thermal
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