Thermal stability and rheological properties of PMMA/B2O3 nanocomposites synthesised by melting method

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Plastics, Rubber and Composites Pub Date : 2022-08-08 DOI:10.1080/14658011.2022.2106727

M. Doğan, Z. Gündüz, B. K. Kızılduman, Pınar Turan Beyli, Y. Turhan, Serap Doğan, M. E. Diken

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引用次数: 1

Abstract

ABSTRACT Nano boron oxide (B2O3) was firstly produced from granular B2O3 by ball milling under cryogenic conditions. Then, PMMA/B2O3 nanocomposites were synthesized by melting method and then characterized. Finally, the rheological properties of PMMA/B2O3 nanocomposite were investigated using a high pressure capillary rheometer. Brauner-Emmet-Teller (BET) surface area analysis showed that the surface area of B2O3 increased with cryogenic grinding. Transmission electron microscopy (TEM) images revealed that B2O3 particles were nano-sized. Scanning electron microscopy (SEM) images showed that the morphology changed with the increase of B2O3 amount. The thermal stability of nanocomposites was found to be better than PMMA. PMMA degraded in two steps, while nanocomposites degraded in one step. It was determined that the amount of residue increased with increasing amount of B2O3. Both PMMA and nanocomposites exhibited non-Newtonian shear thinning flow behavior. In addition, rheological data were found to be highly compatible with the Power Law model.

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熔融法制备PMMA/B2O3纳米复合材料的热稳定性和流变性能

以颗粒状B2O3为原料，采用低温球磨法制备纳米氧化硼(B2O3)。采用熔融法制备了PMMA/B2O3纳米复合材料，并对其进行了表征。最后，利用高压毛细管流变仪研究了PMMA/B2O3纳米复合材料的流变性能。bruner - emmet - teller (BET)表面积分析表明，B2O3的表面积随着低温磨削的增大而增大。透射电子显微镜(TEM)图像显示B2O3颗粒为纳米级。扫描电镜(SEM)图像显示，随着B2O3添加量的增加，形貌发生了变化。纳米复合材料的热稳定性优于PMMA。PMMA的降解分为两步，而纳米复合材料的降解只需一步。结果表明，随着B2O3用量的增加，残渣的含量也随之增加。PMMA和纳米复合材料均表现出非牛顿剪切变薄流动行为。此外，流变数据被发现与幂律模型高度兼容。

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来源期刊

Plastics, Rubber and Composites 工程技术-材料科学：复合

CiteScore

4.10

自引率

0.00%

发文量

审稿时长

4 months

期刊介绍： Plastics, Rubber and Composites: Macromolecular Engineering provides an international forum for the publication of original, peer-reviewed research on the macromolecular engineering of polymeric and related materials and polymer matrix composites. Modern polymer processing is increasingly focused on macromolecular engineering: the manipulation of structure at the molecular scale to control properties and fitness for purpose of the final component. Intimately linked to this are the objectives of predicting properties in the context of an optimised design and of establishing robust processing routes and process control systems allowing the desired properties to be achieved reliably.