Poly(acrylonitrile) Grafted Ipomoea Seed-Gums: A Renewable Reservoir to Industrial Gums

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• 作者：Vandana Singh ; Ashutosh Tiwari ; Devendra Narayan Tripathi ; and Rashmi Sanghi
• 刊名：Biomacromolecules
• 出版年：2005
• 出版时间：January 2005
• 年：2005
• 卷：6
• 期：1
• 页码：453 - 456
• 全文大小：42K
• 年卷期：v.6,no.1(January 2005)
• ISSN：1526-4602

文摘

Plants of Ipomoea genus are widely distributed in India as wild vegetation and are reported source for theseed gums. Seed gums from Ipomoea dasysperma, Ipomoea hederacea, and Ipomoea palmata plants weregrafted with polyacrylonitrile (PAN) using potassium persulfate/ascorbic acid redox initiator for modifyingtheir properties for potential industrial applications. Under identical grafting conditions, the extent of thegrafting was observed to be dependent on the galactose-to-mannose ratio and the degree of the branchingin the galactomannans. Viscosity, gel formation, film formation, and the shelf life of the grafted gum solutionsand water and saline retention capacity of the grafted seed gums were determined and compared with theparent gums. Water retention of the alkalie hydrolyzed grafted seed gums were also studied. Grafted gumswere characterized using FTIR, NMR, and XRD analysis.