【摘要】 研究了用三偏磷酸钠为交联剂制备高交联木薯淀粉的方法,采用偏光显微镜和广角X-射线衍射对交联木薯淀粉由多晶态向非晶态的渐变过程进行了详细观察,发现了随着温度的升高交联木薯淀粉逐渐非晶化现象,提出在高温条件下交联木薯淀粉存在着只含无定型结构的非晶颗粒态,并用扫描电镜对非晶颗粒态木薯淀粉的结构进行了详细研究.更多还原

【Abstract】 With sodium trimetaphosphate as cross-linking agent, the highly cross-linked corn starches was prepared. Using the polarized light microscope and X-ray analytical method, the process gradually changing from polycrystallization to noncrystallization was investigated in detail. Noncrystallization of cross-linked corn starches was found with increasing of temperature. The polarization microscopy and X-ray diffraction data suggested that cross-linking corn only has to be the existence of the non-crystallized granules state in high temperature. A furthermore study on the structure characteristics of tapioca starch with non-crystallized granule state was reponed by SEM.更多还原