The effect of starch-g-copolymers structure on the oxidative behavior studied by the TG/DSC/FTIR-coupled method
The effect of starch-g-copolymers structure on the oxidative behavior studied by the TG/DSC/FTIR-coupled method
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DOI：
10.1007/s10973-017-6182-y
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发表时间：
2017-02
影响因子：
4.4
通讯作者：
M. Worzakowska
中科院分区：
文献类型：
--
作者：
M. Worzakowska
采用TG/DSC/FTIR联用技术研究了淀粉-g-共聚物在氧化条件下的热分解过程。在这些研究中，选择了两种类型的淀粉-g-共聚物，它们是在芳香族丙烯酸酯单体如丙烯酸苯酯和丙烯酸苄酯与淀粉接枝共聚的过程中获得的。TG/DSC研究证实，所有研究的共聚物在加热和空气存在下的分解过程的过程是相似的，并通过三个大的阶段运行。TG/FTIR研究表明，接枝共聚物在第一阶段的分解机理相同，而在第二阶段的分解机理则完全不同，这与接枝聚合物的结构有关。此外，还证明了共聚物的接枝率对其分解过程和分解机理没有影响。接枝率仅影响各分解阶段的Δmin和挥发性物质的释放强度。
The effect of starch-g-copolymers structure on the thermal decomposition course under oxidative conditions by using the simultaneous TG/DSC/FTIR technique has been investigated. To those studies, two types of starch-g-copolymers obtained under the graft copolymerization process of aromatic acrylate monomers such as phenyl acrylate and benzyl acrylate onto starch have been chosen. The TG/DSC investigations confirmed that the course of the decomposition process of all studied copolymers under the heating and in the presence of air was similar and run through three large stages. TG/FTIR studies indicated on the same decomposition mechanism under the first decomposition stage, however, on the completely different decomposition mechanism under the second decomposition stage of the copolymers which was directly dependent on the structure of grafted polymer. In addition, it was also proved that the percent grafting of the copolymers has not influenced on its decomposition course and its decomposition mechanism. The grafting percent influenced only on the Δmin each decomposition stage and on the intensity in the emission of the volatile species.