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https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/60174
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| 题名: | Preparation and properties of blends from poly(3-hydroxybutyrate) with poly(vinyl acetate)-modified starch |
| 作者: | Don, Trong-Ming;Chung, Cheng-Yu;Lai, S.-M.;Chiu, Hsiu-Jung |
| 贡献者: | 淡江大學化學工程與材料工程學系 |
| 日期: | 2010-04 |
| 上传时间: | 2011-10-13 13:09:01 (UTC+8) |
| 出版者: | Hoboken: John Wiley & Sons, Inc. |
| 摘要: | This research used the ceric ion to initiate the graft-polymerization of vinyl acetate (VAc) to a soluble potato starch. Fourier transform infrared spectra confirmed the formation of starch graft copolymer. After 4 h of reaction at 50°C, total monomer conversion, grafting efficiency, and grafting ratio were measured as 91%, 12.5%, and 0.223, respectively. The synthesized PVAc-modified starch was then blended with poly(3-hydroxybutyrate) (PHB). Structures, thermal and mechanical properties of the prepared blends were examined. The results showed the PHB and PVAc-modified starch were miscible in all compositions. In addition, thermal gravimetric analysis revealed that the addition of PVAc-modified starch increased the thermal stability of the PHB component. Further evidence also showed that the addition of PVAc-modified starch reduced the extent of decrease in molecular weight of PHB in a melt-mixer. PHB/PVAc-modified starch blends exhibit higher toughness than pure PHB because of increased compatibility and the leathery PVAc-modified starch. |
| 關聯: | Polymer Engineering & Science 50(4), pp.709–718 |
| DOI: | 10.1002/pen.21575 |
| 显示于类别: | [化學工程與材料工程學系暨研究所] 期刊論文
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