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三种类型氧化淀粉胶粘剂化学稳定性、耐水性及剪裁粘度的理论研究
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摘要
为了更好地理解三种不同类型的氧化改性淀粉基胶粘剂的化学稳定性,耐水性以及剪裁粘度,采用AM1半经验和DFT-B3LYP水平的计算方法,一项详细的理论研究被完成。基于B3LYP计算的Mulliken电荷布局分析(MPA)、前沿轨道分析和静电势(EP)分析,结果表明:被氧化改性淀粉基胶粘剂的化学稳定性、耐水性和剪切粘度均被改善提高,并且遵从相同的顺序:氧化接枝交联淀粉基胶>氧化接枝淀粉基胶>氧化淀粉基胶粘剂,这与实验结果是一致。
To better understand the origin and difference associated with chemical stability, water-resistance and shearing viscosity of three types different oxidized modified starch-based adhesives, a detailed theoretical investigation from a molecular viewpoint has been performed using the AM1 semi-empirical level and the DFT-B3LYP level, respectively. As a result, our findings suggest that, by mulliken population analysis(MPA), frontier orbital analysis and electrostatic potential(EP) analysis based on B3LYP/6-31G calculations, the chemical stability, water-resistance and shearing viscosity of the oxidized modified starch-based adhesives are uniformly improved and corresponding difference for each property presents an identical order: the oxidized grafted cross-linked starch-based adhesive > the oxidized grafted starch-based adhesive > the oxidized starch-based adhesive, which is well consistent with experimental results.
引文
[1]Wang,Y.B.;Su,Q.Chem.World,2008,529:9.
    [2]Wang,Z.J.;Li,Z.F.;Gu,Z.B.;Hong,Y.;Cheng,L.Carbohyd.Polym.2012,699:88.

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