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The effect of molecular weight on glass transition temperature of starch
Author(s): ZHAN Shiping, CHEN Shuhua, LIU Huawei, LI Zhuo, CHEN Li, ZHANG Xinhua
Pages: 55-
57,60
Year: 2006
Issue:
3
Journal: SCIENCE AND TECHNOLOGY OF FOOD INDUSTRY
Keyword: 破璃化转变温度; 分子量; 淀粉;
Abstract: 采用相对黏度法及TDA与DSC法测定了淀粉同系物的黏均分子量和玻璃化转变温度,得到分子量对淀粉同系物的玻璃化转变的影响关系:即随着分子量的增加玻璃化转变温度也增加,当分子量增加到一定程度以后玻璃化转变温度增加趋于平缓,并得到实验关联式.根据这种关系我们可在一定的范围内根据实际生产、加工及贮存的需要,用改变淀粉体系的分子量分布的方法来改变其玻璃化转变温度.
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