Preparation and properties of blends from poly(3-hydroxybutyrate) with poly(vinyl acetate)-modified starch

doi:10.1002/pen.21575

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 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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