Thermal Stability of Poly (acrylonitrile-methyl acrylate) Copolymers  

作　　者：韩娜 张兴祥 王学晨 

机构地区：[1]Tianjin Municipal Key Lab of Fiber Modification and Functional Fiber,Institute of Functional Fibers,Tianjin Polytechnic University

出　　处：《Journal of Donghua University(English Edition)》2008年第5期504-510,共7页东华大学学报（英文版）

基　　金：Supported by National Natural Science Foundation of China (No.50573058);Specialized Research Found for the Doctoral Programof Higher Education (No.20050058004)

摘　　要：Poly (acrylonitrile-methyl acrylate) copolymer was synthesized by water depositing polymerization and has a typical feed ratio of 85/15. And then 1-3 wt% lauryl alcohol maleic anhydride (LAM) was adopted as stabilizer to mix with the acrylonitrile based copolymer. The mixtures were characterized by using Fourier Transform Infrared Spectroscopy (FTIR), Nuclear Magnetic Resonance (1H NMR), Gel Permeation Chromatography (GPC), Differential Scanning Calorimetry (DSC), optic microscope and Ubbelohde viscosimetryr etc. The melting point (Tm) and glass transition temperature (Tg) of the 85/15 AN/MA copolymer mixed with LAM all decrease with the increase of stabilizer content. The lowest Tg and Tm were 116.1℃ and 209.1℃ respectively at the heating rate of 100℃/min when the content of LAM is 2 wt%. The 85/15 AN/MA copolymer mixed with 1-3 wt% LAM possess good thermal stability up to 30 min at 220℃.Poly （ acrylonitrile-methyl acrylate） copolymer was synthesized by water depositing polymerization and has a typical feed ratio of 85/15. And then 1 - 3 wt% lauryl alcohol maleic anhydride （LAM） was adopted as stabilizer to mix with the acrylonitrile based copolymer. The mixtures were characterized by using Fourier Transform Infrared Spectroscopy （FTIR）, Nuclear Magnetic Resonance （1 H NMR ）, Gel Permeation Chromatography （ GPC ）, Differential Scanning Calorimetry （DSC）, optic microscope and Ubbelohde viscosimetryr etc. The melting point （Tm） and glass transition temperature （Tg） of the 85/15 AN/MA copolymer mixed with LAM all decrease with the increase of stabilizer content. The lowest Tg and Tm were 116.1℃ and 209. 1℃ respectively at the heating rate of 100℃/min when the content of LAM is 2 wt%. The 85/15 AN/MA copolymer mixed with 1 - 3 w t% LAM possess good thermal stability up to 30 min at 220 ℃.

关 键 词：STABILITY STABILIZER Acrylonitrile-methyl acrylate copol ymer melting processable 

分 类 号：TQ325.8[化学工程—合成树脂塑料工业]