Then we detected the physiochemical characteristics of the MS sample through scanning electron microscopy ( SEM ) , infrared spectrum ( IR )and differential thermal analysis ( DTA ) .
通过多种检测手段，如：扫描电镜（SEM）、红外光谱（IR）、示差热分析（DTA）等对制备样本的理化特性进行检测。
The deblocking reactions of the prepared blocked polyisocyanates were investigated by thermal gravimetric analysis and FT-IR.
采用热失重分析和红外光谱对封闭物的脱封反应进行了研究。
The structures and properties of the copolymers were determined by GPC, IR, thermal analysis, FS spectra, and UV Vis spectra.
通过红外光谱、凝胶色谱、热分析、荧光光谱、紫外与可见光光谱对共聚物的结构与性质进行了表征。
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