Graft Copolymerisation of Methyl Methacrylate onto a Bacterial Polyester Containing Unsaturated Side Chains

Graft Copolymerisation of Methyl Methacrylate onto a Bacterial Polyester Containing Unsaturated Side Chains

Poly(3‐hydroxy alkanoate) containing unsaturated side chains was produced by feeding Pseudomonas oleovorans with soybean‐oil acid (PHA‐soybean). The composition of PHA‐soybean were found to be 10 mol‐% of unsaturated side chains with the saturated hexanoate, octanoate and decanoate units. Methyl met...

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Bibliographic Details
Published in:Macromolecular chemistry and physics Vol. 202; no. 11; pp. 2281 - 2286
Main Authors: Ilter, Songun, Hazer, Baki, Borcakli, Mehlika, Atici, Oya
Format: Journal Article
Language:English
Published: Weinheim WILEY-VCH Verlag 01-07-2001
WILEY‐VCH Verlag
Wiley
Subjects:
Applied sciences
Copolymerization
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Preparation, kinetics, thermodynamics, mechanism and catalysts
Ester copolymer
Graft copolymer
Microbial origin
Preparation
Experimental study
Methyl methacrylate copolymer
Methyl methacrylate
Grafting
Thermal stability
Aliphatic copolymer
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Summary:Poly(3‐hydroxy alkanoate) containing unsaturated side chains was produced by feeding Pseudomonas oleovorans with soybean‐oil acid (PHA‐soybean). The composition of PHA‐soybean were found to be 10 mol‐% of unsaturated side chains with the saturated hexanoate, octanoate and decanoate units. Methyl methacrylate (MMA) was thermally grafted on PHA‐soybean in the presence of benzoyl peroxide. Fractional precipitation was used to isolate the graft copolymer from related homopolymers. PHA content in copolymer samples was between 15 to 30 mol‐%. Graft copolymer samples were kept in hydroquinone to prevent post polymerization leading to crosslinking in a day under laboratory atmospheric conditions. Copolymer characterization was performed using GPC and NMR techniques. Thermal analysis of the graft copolymer indicated the decomposition and glass transition temperatures of the PHA and PMMA segments of the graft copolymers. They also showed elongation at break in the range 10 to 21 related to the plasticizer effect of the biopolyester segments.
Bibliography:istex:F42B5E8E523E87606FB65871F592B093175B4D43
ark:/67375/WNG-C9CT5WDQ-C
ArticleID:MACP2281
ISSN:1022-1352
1521-3935
DOI:10.1002/1521-3935(20010701)202:11<2281::AID-MACP2281>3.0.CO;2-9