新型甲基丙烯酸缩水甘油酯/粘土纳米复合材料的制备与表征

IF 1.4 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS
I. Stefanović, Bojana Markovic, A. Nastasović, Z. Vuković, Aleksandra Dapčević, V. Pavlović
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引用次数: 0

摘要

研究了纳米填料的种类和用量对原位自由基悬浮聚合法制备的甲基丙烯酸甘油酯-二甲基丙烯酸乙二醇酯(GMA-co-EGDMA)/有机改性蒙脱土(OMt)纳米复合材料性能的影响。本研究采用Cloisite 30B和Cloisite 25A作为纳米填料,用量分别为2%和10%。采用ATR-FTIR分析、广角x射线衍射(XRD)、能量色散x射线能谱扫描电镜(SEM-EDS)、透射电镜(TEM)、热重分析(TG)和汞孔隙度法对初始GMA-co-EGDMA共聚物及其纳米复合材料的结构、形貌、热稳定性和孔隙度进行了表征。结果表明,这两种粘土纳米填料都成功地融入到初始共聚物的结构中,同时在其表面和横截面积上都是如此。2 wt.%的制备样品主要是剥落,而10 wt.%的样品有一些附着-聚集体结构的OMt层。热重分析表明,降解~ 30%后,所有纳米复合材料都比初始共聚物更热稳定。结果表明,添加粘土纳米填料可以很容易地改变孔隙率参数,从而制备出适合特定用途的纳米复合材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Preparation and characterization of novel glycidyl methacrylate/clay nanocomposites
The impact of the type and amounts of nanofiller on the features of the glycidyl methacrylate-co-ethylene glycol dimethacrylate (GMA-co-EGDMA)/organomodified montmorillonite (OMt) nanocomposites that were prepared by in situ radical suspension polymerization, was examined. Cloisite 30B and Cloisite 25A were used in this study as nanofillers, in amounts of 2 and 10 wt.%. The structure, morphology, thermal stability and porosity of the initial GMA-co-EGDMA copolymer and their nanocomposites were examined by ATR-FTIR analysis, wide angle X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and mercury porosimetry. It has been established that both clay nanofillers were successfully incorporated into the structure of the initial copolymer, simultaneously on their surface and also on cross-sectional area. Prepared samples with 2 wt.% have predominantly exfoliated, while samples with 10 wt.% have some tactoids-aggregates structure of the OMt layers. Thermogravimetric analysis revealed that after ~ 30 % of degradation, all nanocomposites become more thermal stable than the initial copolymer. The obtained results indicate that porosity parameters can be easily modified with the addition of clay nanofillers and thus prepared nanocomposites adjusted to specific purposes.
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来源期刊
Science of Sintering
Science of Sintering 工程技术-材料科学:硅酸盐
CiteScore
2.50
自引率
46.70%
发文量
20
审稿时长
3.3 months
期刊介绍: Science of Sintering is a unique journal in the field of science and technology of sintering. Science of Sintering publishes papers on all aspects of theoretical and experimental studies, which can contribute to the better understanding of the behavior of powders and similar materials during consolidation processes. Emphasis is laid on those aspects of the science of materials that are concerned with the thermodynamics, kinetics and mechanism of sintering and related processes. In accordance with the significance of disperse materials for the sintering technology, papers dealing with the question of ultradisperse powders, tribochemical activation and catalysis are also published. Science of Sintering journal is published four times a year. Types of contribution: Original research papers, Review articles, Letters to Editor, Book reviews.
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