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《Paper Science & Technology》 2010-01
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Determination of Carboxyl Content in Sodium Carboxymethyl Cellulose by FT-IR Spectroscopy

Zhang Yanxing1 Ye Jun1 Xiong Jian1 (1.State Key Laboratory of Pulp & Paper Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;(2.Colloge of Light Chemistry and Food Science,South China University of Technology,Guangzhou 510640,Guangdong,China)  
Sodium carboxymethyl cellulose(CMC) is converted to CMC-H,treated with concentrated nitric acid.Then CMC-H's characteristic infrared absorption at 1735cm-1 was selected as the characteristic peak.The baseline of 1918.9cm-1-1529.3cm-1 is used,to avoid the influence of moisture content on the measurement of 1735cm-1 peak height.KSCN was used as a internal standard and a good linear standard curve has been got(R2 = 0.980).The results indicate that carboxyl content in sodium carboxymethyl cellulose can be analyzed by the method of Fourier transform infrared spectroscopy(FT-IR).
【Fund】: 国家自然科学基金(50573025)资助项目
【CateGory Index】: TQ423.11
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