Synthesis and characterization of carboxymethyl potato starch and its application in reactive dye printing
详细信息 查看全文
- 作者：Bing Zhang ; Honghong Gong ; Shaoyu L¨¹ ; Boli Ni ; Mingzhu Liu ; Chunmei Gao ; Yinjuan Huang ; Fei Han
- 关键词：Dry method ; Carboxymethylated ; Thickener ; Reactive dye printing
- 刊名：International Journal of Biological Macromolecules
- 出版年：2012
- 出版时间：November, 2012
- 年：2012
- 卷：51
- 期：4
- 页码：668-674
- 全文大小：792 K
文摘
Carboxymethyl potato starch (CMPS) was synthesized with a simple dry and multi-step method as a product of the reaction of native potato starch and monochloroacetic acid in the presence of sodium hydroxide. The influence of the molar ratio of sodium hydroxide to anhydroglucose unit, the volume of 95 % (v/v) ethanol, the rotation rate of motor driven stirrer and the reaction time for degree of substitution (DS) were evaluated. The product was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and X-ray diffractometry (XRD). FTIR spectrometry showed new bonds at 1618 and 1424 cm?1 when native starch underwent carboxymethylation. SEM pictures showed that the smooth surface of native starch particles was mostly ruptured. XRD revealed that starch crystallinity was reduced after carboxymethylation. The viscosity of the mixture paste of carboxymethyl starch and sodium alginate (SA) was measured using a rotational viscometer. In addition, the applied effect of mixed paste in reactive dye printing was examined by assessing the fabric stiffness, color yield and sharp edge to the printed image in comparison with SA. And the results indicated that the mixed paste could partially replace SA as thickener in reactive dye printing. The study also showed that the method was low cost and eco-friendly and the product would have an extensive application in reactive dye printing.