The melting point, structure, purity and thermal degradation behavior of the product were investigated by DSC, FTIR, GC-MS and TGA .

用DSC、FTIR、气相色谱-质谱联用以及TGA分别对产物的熔点、结构、纯度和热稳定性进行了表征。

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The oxidation degradation of high boiling solvent lignin by hydrogen peroxide was researched on solid super acids catalyst and the products were analyzed by FTIR and GC-MS.

在固体超强酸催化下用过氧化氢氧化降解高沸醇木质素，并利用红外光谱和气相色谱—质谱联用(GC - MS)分析降解产物。

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First, the monomer of CE was purified and tested by modern methods of testing such as DSC, FTIR, GC-MS, and so on.

本文首先对氰酸酯树脂单体进行了提纯，并对提纯前后的单体采用FTIR、DSC、GC - MS等现代测试手段进行了分析。

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