反应性杂化纳米粒子的合成及其对不相容共混物的增容研究

发布时间：2018-05-14 17:24

本文选题：接枝 + 原位增容　；参考：《高分子学报》2017年02期

【摘要】：采用八环氧多面体低聚倍半硅氧烷(POSS(epoxy)8)和端羧基聚甲基丙烯酸甲酯(PMMA-COOH)的开环反应,运用Graft-onto的方法合成了一种反应性杂化纳米粒子:四环氧多面体低聚倍半硅氧烷-接枝-四聚甲基丙烯酸甲酯(POSS(epoxy)4-g-PMMA4).通过傅里叶红外光谱仪(FTIR),示差扫描量热仪(DSC),热失重分析仪(TGA),核磁共振波谱仪(1H-NMR)等对反应性杂化纳米粒子的结构进行了表征,结果表明成功合成了POSS(epoxy)4-g-PMMA4.并将上述合成的反应性杂化纳米粒子应用于聚偏氟乙烯/聚乳酸(PVDF/PLLA)不相容体系的增容,运用万能材料试验机、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对其增容原理和效果进行研究,结果表明POSS(epoxy)4-g-PMMA4可以作为PVDF/PLLA不相容体系的反应性增容剂.
[Abstract]:The ring-opening reaction of octa-epoxy-polyhedron oligosilane (POSS-epoxy8) and carboxyl-terminated polymethyl methacrylate (PMMA-COOH) was studied. A reactive hybrid nano-particle: tetraepoxy-polyhedral oligomeric semi-siloxane grafted methyl tetrapolymethacrylate (POSS-PMA-4-g-PMMA4N) was synthesized by Graft-onto method. The structure of reactive hybrid nanoparticles was characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimeter (DSC), thermogravimetric analyzer (TGA) and 1H-NMR. the results showed that POSS-epoxy4-g-PMMA4 was successfully synthesized. The reactive hybrid nanoparticles were applied to the compatibilization of poly (vinylidene fluoride) / poly (lactic acid) PVDF / PLLA-incompatible system, and the universal material testing machine was used. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to study the principle and effect of compatibilization. The results showed that POSS(epoxy)4-g-PMMA4 could be used as a reactive compatibilizer for PVDF/PLLA incompatible systems.
【作者单位】：杭州师范大学材料与化学化工学院;
【基金】：国家自然科学基金(基金号21674033,21374027) 新世纪优秀人才支持计划(项目号NCET-13-0762)资助项目
【分类号】：TB383.1;TQ314.24

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