淀粉
多孔性
肿胀 的
吸附
化学工程
水解
材料科学
直链淀粉
变性淀粉
化学
动力学
高分子化学
核化学
复合材料
有机化学
工程类
物理
量子力学
作者
Fei Gao,Dong Li,Chong‐hao Bi,Zhihuai Mao,Benu Adhikari
标识
DOI:10.1016/j.carbpol.2013.12.028
摘要
Crosslinked porous starch samples were produced by first crosslinking corn starch with sodium trimetaphosphate (STMP) and then partially hydrolyzing it with a mixture of α-amylase and glucoamylase. The granule morphology, porosity, swelling power, adsorption capacity, crystalline nature, molecular structure, melting and viscometric properties of these starch samples were measured and analyzed. The results showed that the porous starch which was crosslinked with 6% (w/w) STMP (ScPS-6) possessed remarkable superiority in terms of thermal and shear resistance among all the starch samples tested. The ScPS-6 also had the highest porosity and largest average pore diameter values. The swelling power of crosslinked porous starch was 56.3% lower than that of uncrosslinked porous starch. First order reaction kinetics equation was found to excellently (R(2) ≥ 0.99, average error = 6.03%) predict the experimental adsorption kinetics data of methylene blue for the crosslinked porous starch samples.
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