食品科学 ›› 2011, Vol. 32 ›› Issue (24): 16-20.doi: 10.7506/spkx1002-6630-201124004

• 工艺技术 • 上一篇    下一篇

以氮为中心的交联接枝共聚淀粉黄原酸盐制备工艺优化及产物表征

夏璐,鲁栋梁,胡伊旭,金帅   

  1. 广西民族大学化学与生态工程学院,广西林产品开发与应用重点实验室,化学与生物转化工程新技术广西高校重点实验室
  • 出版日期:2011-12-25 发布日期:2011-12-29
  • 基金资助:
    国家自然科学基金项目(41061044);广西自然科学基金重点项目(2010GXNSFD013016); 广西教育厅“广西高校优秀人才资助计划”项目(桂教人[2007]70 号)

Optimal Preparation of Dithioamino Starch Xanthogenate and Its Characterization

XIA Lu,LU Dong-liang,HU Yi-xu,JIN Shuai   

  1. (Key Laboratory of Development and Application of Forest Chemicals of Guangxi, Key Laboratory of Chemical and Biological Transforming Process, College of Chemistry and Ecological Engineering, Guangxi University for Nationlities, Nanning 530006, China)
  • Online:2011-12-25 Published:2011-12-29

摘要: 以可溶淀粉和原乙酸三甲酯进行缩醛反应生成淀粉环酯,在氨水中交联、接枝共聚、磺化合成出以氮为中心的交联接枝共聚淀粉黄原酸盐(dithioamino starch xanthogenate,DSX)。通过正交试验设计方法优化制备条件,结果表明:原料淀粉10g、交联剂(环氧氯丙烷)1.77g、引发剂(过硫酸铵)0.053g、接枝单体(丙烯酰胺)3.37g和二硫化碳6.30g,合成的产物(DSX)对模拟废水中Cu2+的去除率达到98.5%。采用红外图谱、元素分析、核磁、热分析、扫描电镜等多种手段对产物进行表征。

关键词: 淀粉, 接枝共聚, 吸附, 金属离子, 表征

Abstract: In order to synthesize a novel dithioamino starch xanthogenate (DSX), the acetalization reaction between soluble starch and trimethyl orthoacetate was carried out to form starch acetal-3,6 ring ester, followed by cross-linking in aqueous ammonia, graft copolymerization with acrylamide and sulfonation. Using orthogonal array design, the optimal reaction system was determined to consist of: 10 g of starch, 1.77 g of cross-linking reagent, 0.053 g of initiator, 3.37 g of graft monomer and 6.30 g of carbon disulfide. The synthesized product could remove 98.5% Cu2+ from simulated wastewater. Further, its structure was characterized by FT-IR, elemental analysis, nuclear magnetic resonance (13C-NMR and H-NMR), thermogravimetric analysis (TG) and scanning electron microscope (SEM).

Key words: starch, graft copolymerization, adsorption, metal ion, characterization

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