| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Research Abstract |
A novel type of 3-hydroxybutyrate (3HB)-based polyhydroxyalkanoate (PHA) copolymer, poly(3HB-co-3-hydroxy-3-phenylpropioate) [P(3HB-co-3H3PhP)], which bears phenyl side group, was synthesized by employing Ralstonia eutropha PHB-4 recombinant expressing Pseudomonas sp. 61-3 PHA synthase 1. The 3H3PhP fraction was increased up to 8.9 mol% by feeding 3H3PhP precursors. As phenyl side group was introduced into P(3HB), the melting temperature and the enthalpy of fusion were decreased while the glass transition temperature was increased, demonstrating a distinct thermal behavior by the effect of phenyl side group.
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