高交联木薯淀粉非晶化特性研究

研究了以三氯氧磷为交联剂的高交联木薯淀粉的制备方法，报告了高交联木薯淀粉颗粒随反应取代度增加而逐渐非晶化的现象；同时，采用偏光显微镜和广角Ｘ－射线衍射对其由多晶态向非晶态的渐变过程进行了研究，提出高交联木薯淀粉存在着不同于原淀粉多晶颗粒态的只含无定形结构的非晶颗粒态。对非晶颗粒态高交联木薯淀粉颗粒的粒度分布的进一步研究结果还表明，此时的淀粉颗粒发生了轻度有限的膨胀

Effect of High Cross-Linking on Noncry stallization of Tapioca Starches

With phosphors oxychloride the high cross linking tapioca starches were prepared, and the noncrystallzation of the starches with the increasing of the degree of substitution were reported.The polarisation microscopy and X-ray diffraction data suggested that high cross-linking caused the starches changed from polycrystalline granules to noncrystalline granules gradually. Furthermore,the distribution of particle size of the noncrystallization tapioca starch granules also reveal the existance of the amorphous granules and its limited swelling.