Emulsion grafting of vinyl acetate onto preirradiated poly(3‐hydroxybutyrate) film |
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| Authors: | Yuki Wada Masao Tamada Noriaki Seko Hiroshi Mitomo |
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| Affiliation: | 1. Department of Biological and Chemical Engineering, Faculty of Engineering, Gunma University, 1‐5‐1 Tenjin‐cho, Kiryu, Gunma 376–8515, Japan;2. Environment and Industrial Materials Research Division, Quantum Beam Science Directorate, Japan Atomic Energy Agency, 1233 Watanuki‐machi, Takasaki, Gunma 370–1292, Japan |
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| Abstract: | Vinyl acetate (VAc) was grafted onto poly(3‐hydroxybutyrate) film by a preirradiation method. Grafting reactions were carried out in VAc/water/surfactant emulsion, VAc/water, and VAc/methanol systems. For emulsion grafting, Nonion L‐4 was ascertained to be the optimum surfactant with respect to the stability of a single emulsion layer. The emulsion with a 10 : 1 (w/w) ratio of VAc to surfactant yielded the highest degree of grafting: 23%. The grafting efficiency in the emulsion and the water and methanol solvents were evaluated. The results indicated that the grafting efficiency of the emulsion was 100 times that of VAc/methanol when the same 2 wt % VAc was used in the grafting reaction. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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| Keywords: | graft copolymers particle size distribution solution properties |
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