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本文用元素分析、红外光谱、X射线衍射和扫描电镜等手段,对γ射线和四价铈盐分别引发并制备的淀粉—丙烯腈接枝共聚体水解产物,进行了其大分子聚集态结构的研究。结果表明,尽管它们的引发方式不同,但在其聚集态内部,由于接枝侧链的“搭桥”,都存在着大小不同的孔洞,呈现无规交联结构,并在其大分子链中都含有—COONa基团和—CONH_2基团,它们分别在1400cm~(-1)和1652cm~(-1)带存在着较强的红外吸收。这些结构特征与产物的吸水性能相关。
In this paper, the hydrolyzate of starch-acrylonitrile graft copolymer initiated and prepared byγ-ray and tetravalent cerium salt respectively by means of elemental analysis, infrared spectroscopy, X-ray diffraction and scanning electron microscopy, the study. The results show that although their initiation modes are different, in their aggregate state, due to the “bridging” of grafted side chains, there are holes of different sizes, presenting a random cross-linked structure, and in the macromolecular chains Contains -COONa group and -CONH_2 group, which have strong infrared absorption at 1400cm -1 and 1652cm -1 respectively. These structural features are related to the water absorption properties of the product.