Surface Modification of Poly(3-hydroxybutyrate) (PHB) by Photografting and Its Properties Evaluation |
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| Authors: | Cai Zhijiang Cheng Guoxiang Geng Mingming Tang Zhiyuan |
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| Affiliation: | (1) School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, P.R. China;(2) School of Chemical Engineering of Tianjin University, Tianjin, 300072, P.R. China;(3) Tianjin Peace Bay Power Sources Group CO., LTD., Tianjin, 300384, P.R. China |
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| Abstract: | Photografting reaction of poly(ethylene glycol) (PEG) onto poly(3-hydroxybutyrate) (PHB) by UV-irradiation was successfully conducted. The surface properties of PHB grafting copolymers such as hydrophilicity, enzymatic biodegradation and mechanical properties were investigated. The grafting copolymers showed better hydrophilic property and faster biodegradation rate than that of blank PHB in an enzymatic environmental medium, at the same time, its bulk properties such as mechanical properties were also improved in the certain content of grafting PEG. Varying the PEG grafting content, a series of copolymer with different biodegradation rate, which could fit the future application, can be attained. These photografting copolymers may be useful in some field, such as control-release delivery and tissue engineering, etc. |
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| Keywords: | hydrophilicity poly(3-hydroxybutyrate) polyethylene glycol photografting UV-irradiation |
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