塑料科技2024，Vol.52Issue(12)：8-12,5.DOI:10.15925/j.cnki.issn1005-3360.2024.12.002
N,N'-双(丙烯酰)胱胺交联聚(N-异丙基丙烯酰胺)的合成、表征及其降解性能研究
Synthesis,Characterization and Degradable Property Study of PNIPAM Microgels Crosslinked by N,N'-Bisacrylylcystamine
摘要
Abstract
Using N-isopropylacrylamide(NIPAM)as the monomer,ammonium persulfate(APS)as the oxidizing agent,tetramethylethylenediamine(TEMED)as the reducing agent,N,N'-bis(acryloyl)cystamine(BAC)containing reducible disulfide bonds under reductive conditions as the crosslinking agent,and dimethylformamide(DMF)as the solvent for dissolving BAC,the study successfully prepared BAC-crosslinked poly(N-isopropylacrylamide)(PNIPAM)microgels through a soap-free emulsion polymerization method,utilizing the redox initiation system of APS and TEMED.The FTIR test showed that the microgels contained disulfide bonds.The product microgels were observed to be regular spheres with submicron dimensions by TEM.The microgels were observed to be significantly temperature-sensitive by DLS,with the volumetric phase-transition temperatures(VPTT)around 29.1℃.The BAC-crosslinked PNIPAM microgels in aqueous solution of the reductant dithiothreitol(DTT)showed an obvious degradation property,and the larger the concentration of DTT,the faster and greater the degradation of the microgel.关键词
无皂乳液聚合/聚(N-异丙基丙烯酰胺)/温度敏感性/二硫键/可降解微凝胶Key words
Soap-free emulsion polymerization/Poly(N-isopropyl acrylamide)/Temperature sensitivity/Disulfide bonds/Degradable microgel分类
化学化工引用本文复制引用
许远航,莫婷,李明昊,李可鑫,张帅,李佳锡,石山..N,N'-双(丙烯酰)胱胺交联聚(N-异丙基丙烯酰胺)的合成、表征及其降解性能研究[J].塑料科技,2024,52(12):8-12,5.基金项目
辽宁省教育厅科学研究青年项目(LJKQ20222422) （LJKQ20222422）
