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OALib Journal期刊
ISSN: 2333-9721
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微波辅助制备乙酰化玉米淀粉的理化性能
Keywords: 有机高分子材料,乙酰化玉米淀粉,微波辐射,理化特性,生物降解
Abstract:
？以玉米淀粉(ncs)为原料,乙酸乙烯酯(vac)为酰化剂,k2co3为催化剂,用微波辅助法制备乙酰化玉米淀粉(acs),用红外光谱(ft-ir)、扫描电镜(sem)和x-射线衍射(xrd)等手段对其表征,研究了acs的理化特性,粘附性能和生物降解性。结果表明,acs的理化性能比ncs有较大的改善:其水合能力增强,溶胀性与糊透明度提高;特性黏度和表观粘度下降,流变性能有所改善;凝沉作用减弱,抗老化性增强。acs对涤棉纤维的粘附性提高,克服了原淀粉对疏水性合成纤维粘附力不足的缺陷。acs的bod5/codcr比值远高于pva-205。
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