网球线结构及分类研究

Structure and classification study of tennis strings

采用一维中红外光谱和二阶导数中红外光谱开展了网球线的结构研究。第一类网球线(包括1号线和5号线)的红外吸收模式主要包括ν_(NH-)网球线、νas_(CH2-)网球线、νs_(CH2-)网球线、ν_(amide-Ⅰ-网球线)、ν_(amide-Ⅱ-网球线)、δ_(CH2-)网球线和γ_(CH2-)网球线,其主要化学结构为聚己二酰己二胺。第二类网球线(包括2号线、3号线、4号线和6号线)的红外吸收模式主要包括νas_(CH2-)网球线、ν_(sCH2-)网球线、ν_(CO-)网球线、ν苯环骨架-网球线、β_(CH2-)网球线、γ_(CH2-)网球线、β_(CH-)网球线和γ_(CH-)网球线,其主要化学结构为聚对苯二甲酸乙二醇酯。采用二维中红外光谱分别对第一类网球线和第二类网球线进行研究,同一结构但不同品牌的网球线得到了明显的区分。研究结论拓展了三级中红外光谱在重要体育器材(网球线)结构及分类方面的应用范围。

The structure study of tennis strings was studied by one dimensional infrared spectroscopy and second derivative infrared spectroscopy in this paper. Firstly, tennis strings(including Line 1 and Line 5) have several infrared absorption modes. They are νNH-tennis string, νasCH2-tennis string, νsCH2-tennis string,νamide-Ⅰ-tennis string, νamide-Ⅱ-tennis string, δCH2-tennis string, γCH2-tennis string and the chemical structure is polyhexamethylene adipamide. The second infrared absorption mode includes tennis strings Line 2, Line 3, Line 4 and Line 6, there were νas νCH2-tennis string,νsCH2-tennis string,νC=O-tennis string,νBenzene ring framework-tennis string,βCH2-tennis string,γCH2-tennis string,βCH-tennis string,γCH-tennis string,and the chemical structure is polyethylene terephthalate( PET). The classification of tennis strings( including first kind tennis string and second kind tennis string) were researched by two dimensional infrared( 2D-MIR) spectroscopy also and the same structure from different brands tennis string could be distinguished obviously. It was demonstrated that the key roles of three-level infrared spectroscopy can be expanded in the structure and classification of the important sport equipment( tennis string).