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Morphology, mechanical property, and processing thermal stability of PVC/La‐OMMTs nanocomposites prepared via in situ intercalative polymerization
Journal of Vinyl and Additive Technology ( IF 2.7 ) Pub Date : 2019-05-18 , DOI: 10.1002/vnl.21719
Heyun Wang 1, 2, 3 , Yingchun Li 1 , Zhong Wei 1, 4 , Yanmei Song 1 , Qiang Liu 1 , Chunlin Wu 1, 4 , Hao Wang 1 , Haoji Jiang 1
Affiliation  

Poly(vinyl chloride) (PVC) nanocomposites were prepared via an in situ intercalative suspension polymerization of vinyl chloride with four organic carboxylic acid salts (montmorillonite [MMT] units) containing thermally stable lanthanum ions. The effects of different lanthanum organic montmorillonites (La‐OMMTs) on the particle features and molecular weight were investigated. The transmission electron microscopy data indicated the formation of partially exfoliated or intercalated PVC/La‐OMMTs nanocomposites. The effect of different functional groups on the mechanical properties and processing thermal stability of PVC/La‐OMMT nanocomposites were investigated. Tensile testing and two‐roll mill processing results showed that La‐OMMTs could enhance the dynamic thermal stability and mechanical properties versus PVC pure resin and PVC/I.30P nanocomposites (composed of PVC and I.30P). This suggested that the double bond and amidogen group in La‐OMMTs could promote the dispersion of La‐OMMTs in the PVC matrix and also improve the adhesion between the La‐OMMTs and PVC matrix. The results have potential value in the industrial development of PVC/La‐OMMTs nanocomposites. J. VINYL ADDIT. TECHNOL., 26:97–108, 2020. © 2019 Society of Plastics Engineers

中文翻译:

通过原位插层聚合制备的PVC / La-OMMTs纳米复合材料的形貌,力学性能和加工热稳定性

通过原位制备聚氯乙烯(PVC)纳米复合材料氯乙烯与四种含有热稳定镧离子的有机羧酸盐(蒙脱石[MMT]单元)的插层式悬浮聚合。研究了不同的镧有机蒙脱土(La‐OMMTs)对颗粒特征和分子量的影响。透射电子显微镜数据表明部分剥落或嵌入的PVC / La-OMMTs纳米复合材料的形成。研究了不同官能团对PVC / La-OMMT纳米复合材料力学性能和加工热稳定性的影响。拉伸测试和两辊轧机的加工结果表明,La-OMMT与PVC纯树脂和PVC / I.30P纳米复合材料(由PVC和I.30P组成)相比,可以提高动态热稳定性和机械性能。这表明La‐OMMTs中的双键和酰胺基可以促进La‐OMMTs在PVC基体中的分散,也可以提高La‐OMMTs与PVC基体之间的附着力。结果对PVC / La-OMMTs纳米复合材料的工业开发具有潜在价值。J.乙烯基添加物。TECHNOL。,26:97–108,2020.©2019塑料工程师协会
更新日期:2019-05-18
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