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交联共聚物的红外光谱定量分析研究
引用本文:邵琼芳,董明,陈帅华,韦超,谢小红.交联共聚物的红外光谱定量分析研究[J].光谱学与光谱分析,2007,27(12):2445-2447.
作者姓名:邵琼芳  董明  陈帅华  韦超  谢小红
作者单位:1. 宁波工程学院化工学院,浙江,宁波,315016;江西科技师范学院化学系,江西,南昌,330013
2. 宁波工程学院化工学院,浙江,宁波,315016
3. 江西科技师范学院化学系,江西,南昌,330013
基金项目:国家自然科学基金 , 江西省自然科学基金 , 江西省科技厅科技攻关项目
摘    要:交联共聚物由于具有不溶不熔性,定量分析方法非常有限,红外光谱分析可以用溴化钾压片制样,故不受此限制.文章用红外内标法测定了甲基含氢硅油-丙交酯交联共聚物中两组分的含量.以KSCN为内标物资,以2 100 cm-1处的强吸收峰为KSCN的定量峰.以1 750 cm-1的强羰基吸收峰为丙交酯的定量峰,二者的吸光度比值为I=ALA/AKSCN.丙交酯和内标物质KSCN的质量比即浓度比为C=MLA/MKSCN,以C对I作图,得内标工作曲线.实验结果表明在2/5<MLA/MKSCN<8/5范围内有较好的线性关系.只要加入适量的内标物质,使C值落在直线范围内,即可获得较为准确的分析结果.文章为交联共聚物以及其他共聚物组成的测定提供了一种简便易行的实验方法.

关 键 词:交联共聚物  红外光谱  定量分析  共聚物组成  丙交酯
文章编号:1000-0593(2007)12-2445-03
收稿时间:2006-09-09
修稿时间:2007-07-12

Study on Quantitative Analysis of Cross Linked Copolymer by IR
SHAO Qiong-fang,DONG Ming,CHEN Shuai-hua,WEI Chao,XIE Xiao-hong.Study on Quantitative Analysis of Cross Linked Copolymer by IR[J].Spectroscopy and Spectral Analysis,2007,27(12):2445-2447.
Authors:SHAO Qiong-fang  DONG Ming  CHEN Shuai-hua  WEI Chao  XIE Xiao-hong
Institution:Department of Chemical Engineering, Ningbo University of Technology, Ningbo 315016, China. shaoqf85@163.com
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 1750 cm(-1) is the characteristic absorption of carbonyl and was chosen as thequantitative 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
Keywords:Cross linked copolymer  IR-spectra  Quantitative analysis  Component of copolymer  Lactide
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