高等学校化学学报Issue(3)：610-618,9.DOI:10.7503/cjcu20141059
聚乳酸/壳聚糖季铵盐皂石纳米复合材料的原位插层聚合及性能表征
In-situ Intercalative Polymerization of Poly(lactic acid)/HTCC-saponite Nanocomposites and Their Properties Characterization
摘要
Abstract
Water-soluble N-(2-hydroxyl) propyl-3-trimethyl ammonium chitosan chloride( HTCC) was synthe-sized with 2,3-epoxypropyl trimethyl ammonium chloride(GTA) grafting to the amino groups of chitosan by two-step method. Then, chitosan quaternary ammonium intercalated saponite ( HTCC-saponite ) was synthe-sized with HTCC and saponite under ultrasonication. Moreover, poly ( lactic acid ) ( PLA )/HTCC-saponite nanocomposites were prepared by means of in-situ intercalative polymerization with HTCC-saponite and lac-tide. Orthogonal experiment showed the optimization polymerization parameters of PLA/HTCC-saponite were as follows:the polymerization temperature was 150 ℃, the amount of stannous caprylate was 2%( mass frac-tion) , the amount of HTCC saponite was 1%( mass fraction) and the polymerization time was 16 h. The mor-phology analysis showed that the HTCC-saponite appeared with intercalative or partially exfoliated structure. The microstructure, morphology and thermal properties of PLA/HTCC-saponite nanocomposites were charac-terized by XRD, TEM, TG-DTG and DSC, respectively. The results showed that HTCC-saponite obviously promoted the crystallinity and thermal stability of PLA. The antibacterial results showed that HTCC-saponite had good antimicrobial properties, which was endowed in PLA/HTCC-saponite nanocomposites.关键词
聚乳酸/壳聚糖季铵盐/皂石/原位插层聚合/纳米复合材料Key words
Poly(lactic acid)(PLA)/Quaternized chitosan/Saponite/In-situ intercalative polymerization/Nanocomposite分类
化学化工引用本文复制引用
席习,甄卫军,卞生珍..聚乳酸/壳聚糖季铵盐皂石纳米复合材料的原位插层聚合及性能表征[J].高等学校化学学报,2015,(3):610-618,9.基金项目
新疆大学博士基金项目(批准号:BS120110)资助.Supported by the Xinjiang University Foundation, China(No. BS120110) （批准号:BS120110）
