| 光谱学与光谱分析 |
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| Study on Quantitative Analysis of Cross Linked Copolymer by IR |
| SHAO Qiong-fang1,2,DONG Ming1,CHEN Shuai-hua2,WEI Chao2,XIE Xiao-hong2 |
1. Department of Chemical Engineering, Ningbo University of Technology, Ningbo 315016, China
2. Department of Chemistry, Jiangxi Science and Technology Teacher’s College, Nanchang 330013, China |
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Abstract Cross linked copolymer silicon oil-Co-lactide(Si-co-LA) was analyzed quantitatively by IR. Potassium sulfocyanate(KSCN) was chosen as an inside mark material, because it has only one strong absorption peak at 2 100 cm-1 and the peak was chosen as its quantitative peak. The peak at 1 750 cm-1 is the characteristic absorption of carbonyl and was chosen as the quantitative peak of lactide(LA). The ratio of the two absorbencies is I, and I=ALA/AKSCN. KSCN and LA were mixed according to a certain mass ratio C=MLA/MKSCN to prepare standard samples. The curve of C versus I is the quantitative work curve. The result of the experiment indicates that the work curve has good linearity in the range of 2/5＜MLA/MKSCN＜8/5. The formulas calculating the proportion of every component in the cross linked copolymer were established: MKSC/Mp=B，MLA/MKSCN=C, and (MLA/Mp)×100%=BC×100%. Cross Linked Copolymer is hard to be analyzed quantitatively, because of its no dissolving and no melting. A convenient method of determining the component of the cross linked copolymer or other copolymer has been provided.
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Received: 2006-09-09
Accepted: 2007-07-12
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Corresponding Authors:
SHAO Qiong-fang
E-mail: shaoqf85@163.com
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| Cite this article: |
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SHAO Qiong-fang,DONG Ming,CHEN Shuai-hua, et al. Study on Quantitative Analysis of Cross Linked Copolymer by IR[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(12): 2445-2447.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I12/2445 |
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