嵌段共聚物PAN-b-PZDMA的合成及表征

Synthesis and Characterization of the Block Copolymer PAN-b-PZDMA

摘要:

使用原子转移自由基聚合法(ATRP)设计合成了大分子引发剂PAN-Br，通过引发甲基丙烯酸锌单体聚合制备得到粘均分子量分别为7507，8517，9905的嵌段共聚物聚丙烯腈-b-聚甲基丙烯酸锌(PAN-b-PZDMA)，利用1H-NMR 和FT-IR确认了大分子引发剂和嵌段共聚物的分子结构。TGA和DSC测试结果显示，ZDMA链段抑制了聚丙烯腈的环化反应，提高了聚合物的热性能。

Abstract:

Macroinitiator （PAN-Br） and block copolymer (PAN-b-PZDMA) are synthesized using Atom Transfer Radical Polymerization (ATRP). The viscosity-average molecular weights of PAN-b-PZDMA we prepared are 7507，8517，9905 respectively. The molecular structures of macroinitiator and block copolymer (PAN-b-PZDMA) are characterized by 1H-NMR and FT-IR. It was shown by TGA and DSC that the thermal stability of block copolymer is promoted by the block of PZDMA in copolymer.