文献类型：期刊文献

英文题名：Identification of polymer building blocks by Py-GC/MS and MALDI-TOF MS

作者：Ren, Hongxin[1];Hu, Huilian[1];Yu, Bohao[1];Du, Yiping[1];Wu, Ting[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：23

期号：1

起止页码：9

外文期刊名：INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION

收录：;EI(收录号：20174704443492);WOS:【SCI-EXPANDED(收录号:WOS:000428258000002)】；

基金：This work was supported by Fundamental Research Funds for the Central Universities (No. 222201714047).

语种：英文

外文关键词：MALDI-TOF MS; MDI; polyurethane; Py-GC/MS; TDI

摘要：The main goal of this work is to identify polyurethane (PU) building blocks by pyrolysis gas chromatography/mass spectrometry (Py-GC/MS) and matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS). Toluene diisocyanate (TDI) and diphenylmethane diisocyanate (MDI) are widely used polymer building blocks. Py-GC/MS and MALDI-TOF MS were proved to be powerful methods to distinguish TDI-PU and MDI-PU according to the characteristic pyrolysis products and the different repeated units, respectively. In Py-GC/MS, the specific pyrolyzates are TDI for TDI-PU and MDI for MDI-PU. In MALDI-TOF MS, the weights of repeated units are 264 g/mol for TDI-PU and 340 g/mol for MDI-PU.