Calculating D-lactide content by probability using gas chromatographic data
文献类型：期刊论文
| 作者 | Feng LD ; Chen XS ; Bian XC ; Xiang S ; Sun B ; Chen ZM |
| 刊名 | chemometrics and intelligent laboratory systems
 |
| 出版日期 | 2012 |
| 卷号 | 110期号:1页码:32-37 |
| 关键词 | RING-OPENING POLYMERIZATION THERMAL-DEGRADATION POLY(LACTIC ACID) POLY(L-LACTIDE) POLYLACTIDE H-1-NMR POLYESTERS ALKOXIDES BEHAVIOR C-13 |
| ISSN号 | 0169-7439 |
| 通讯作者 | chen xs |
| 中文摘要 | a new method to calculate the d-lactide content in the intermediate for the synthesis of poly(lactic acid) (pla) has been developed using capillary gas chromatography (gc). separating d-lactide from l-lactide using conventional gc is challenging. however, the content of two lactide enantiomers can be obtained through probability calculation from the gc data. the reactivity of l-lactic acid is equivalent to that of d-lactic acid during polycondensation to prepare low molecular weight pla prepolymers. racemization reactions occur randomly during the production of the prepolymers and subsequent depolymerization of the prepolymers for the preparation of a cyclic lactic acid dimmer (lactide). the proportions of generated lactide stereo isomers in crude lactide conform to the laws of probability. the stereochemical structure of lactide is not altered during its purification. thus, the ratio of l- to d-lactide is a constant. therefore, the d-lactide content in refined lactide can be obtained. the results are in good agreement with the testing data obtained using gc-hplc. the residual standard deviation, delta = 0.29%, indicates that the probability principle is suitable for calculating the isomer content in lactide. the relative standard deviation of the measurements for d-lactide content is less than 8.0%, indicating that this method is suitably precise. (c) 2011 elsevier b.v. all rights reserved. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000299712500003 |
| 公开日期 | 2013-06-09 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/48390]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Feng LD,Chen XS,Bian XC,et al. Calculating D-lactide content by probability using gas chromatographic data[J]. chemometrics and intelligent laboratory systems,2012,110(1):32-37. |
| APA | Feng LD,Chen XS,Bian XC,Xiang S,Sun B,&Chen ZM.(2012).Calculating D-lactide content by probability using gas chromatographic data.chemometrics and intelligent laboratory systems,110(1),32-37. |
| MLA | Feng LD,et al."Calculating D-lactide content by probability using gas chromatographic data".chemometrics and intelligent laboratory systems 110.1(2012):32-37. |
入库方式： OAI收割
来源：长春应用化学研究所
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