Optimizing thermal stability and structural integrity in polystyrene nanocomposites with rutile TiO₂ nanoparticles

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-04-01 DOI:10.1016/j.ceramint.2025.01.016

A. Rahimli , A. Huseynova , R. Alekberov , M. Jafarov

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Abstract

The structural, thermal, and optical properties of TiO₂/Polystyrene (PS) nanocomposites were investigated to understand the effects of incorporating rutile-phase TiO₂ nanoparticles. The nanocomposites were synthesized using a solution mixing method followed by hot pressing. Structural analysis, employing both Scherrer's and Williamson-Hall methods, revealed that the crystallite size increased and strain decreased as TiO₂ content increased, indicating a structural evolution. SEM-EDX analysis confirmed uniform distribution of TiO₂ within the PS matrix. Thermal analysis via DSC showed a significant increase in the melting temperature (Tm), rising by up to 41 °C, reflecting enhanced thermal stability due to restricted polymer chain mobility. The glass transition temperature (T_g) also increased, suggesting stronger interfacial interactions between TiO₂ and PS. TGA results demonstrated improved thermal stability, with a significant shift in decomposition temperatures from 450 °C for pure PS to 480 °C for PS/10 % TiO₂, highlighting the positive effect of TiO₂ nanoparticles in enhancing the heat resistance of the nanocomposites. Activation energy calculations using Kissinger and Arrhenius models further revealed that TiO₂ nanoparticles act as thermal barriers, significantly increasing the energy barrier for thermal decomposition. This work highlights the potential of TiO₂/PS nanocomposites for use in protective coatings, packaging, and optoelectronic devices, and provides valuable insights into designing high-performance, sustainable polymer nanocomposites for industrial applications.

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金红石型二氧化钛纳米颗粒聚苯乙烯纳米复合材料的热稳定性和结构完整性优化

研究了tio2 /聚苯乙烯（PS）纳米复合材料的结构、热学和光学性能，以了解加入金红石相tio2纳米颗粒对其性能的影响。采用溶液混合-热压法制备了纳米复合材料。采用Scherrer's和Williamson-Hall方法进行的结构分析表明，随着tio2含量的增加，晶粒尺寸增大，应变减小，表明结构发生了演变。SEM-EDX分析证实了tio2在PS基体中的均匀分布。通过DSC进行的热分析显示，熔融温度（Tm）显著增加，上升了41°C，反映了由于限制了聚合物链迁移性而增强的热稳定性。玻璃化转变温度（Tg）也增加，表明tio2与PS之间的界面相互作用更强。TGA结果表明热稳定性得到改善，分解温度从纯PS的450°C显著转变为PS/ 10% tio2的480°C，突出了tio2纳米颗粒在提高纳米复合材料耐热性方面的积极作用。利用Kissinger和Arrhenius模型计算活化能进一步揭示了TiO2纳米颗粒具有热障作用，显著提高了热分解能垒。这项工作突出了tio2 /PS纳米复合材料在保护涂层、包装和光电子器件中的应用潜力，并为设计用于工业应用的高性能、可持续的聚合物纳米复合材料提供了有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.