Reinforced sound insulation properties of styrene-acrylonitrile copolymer composites via using organo-montmorillonite loaded polymethylmethacrylate microspheres

IF 4.5 2区化学 Q2 POLYMER SCIENCE Polymer Pub Date : 2025-03-12 Epub Date: 2025-02-08 DOI:10.1016/j.polymer.2025.128140

Zhengxue Shi , Jingjie Hu , Mengqi Zhang, Feng You, Xueliang Jiang, Huaming Zheng, Chu Yao, Pei Zhao

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Abstract

Sound insulation material has been broadly used in transportation or construction industries to control noise. Polymer composites have been used in acoustic areas due to their low density and feasible processing capability. In this work, organo-montmorillonite (OMMT) lamellae were adsorbed onto polymethyl methacrylate (PMMA) microspheres via soap-free emulsion polymerization to obtain PMMA@OMMT composite microspheres on reinforcing the sound-insulating effect of styrene-acrylonitrile copolymer (SAN). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) confirmed the successful loading of OMMT on PMMA microspheres. The sound insulation properties of SAN by incorporating PMMA@OMMT were conducted using a four-microphone impedance tube. The results revealed that PMMA@OMMT composite microspheres were more efficient in enhancing the sound insulation properties of SAN than that using simple blending commercial pelletized PMMA with OMMT or PMMA microspheres with MMT. The average sound transmission loss (STL) of SAN/PMMA@OMMT (5 wt%) composites could reach 38.97 dB, which exceeded previous reports by taking into consideration the thin thickness and few filler loadings. The sound reinforcing mechanism for PMMA@OMMT on SAN was analyzed using dynamic mechanical analysis. This work will broaden the application of OMMT in sound insulation and provide a novel solution for designing lightweight sound-insulation materials.

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有机蒙脱土负载聚甲基丙烯酸甲酯微球增强苯乙烯-丙烯腈共聚物复合材料的隔声性能

隔声材料已广泛应用于交通运输或建筑行业，以控制噪音。聚合物复合材料以其低密度和可行的加工能力在声学领域得到了广泛的应用。本文通过无皂乳液聚合，将有机蒙脱土（OMMT）片层吸附在聚甲基丙烯酸甲酯（PMMA）微球上，得到PMMA@OMMT复合微球，用于增强苯乙烯-丙烯腈共聚物（SAN）的隔声效果。扫描电镜（SEM）和透射电镜（TEM）证实了OMMT在PMMA微球上的成功加载。采用四传声器阻抗管对掺入PMMA@OMMT的SAN的隔声性能进行了研究。结果表明，PMMA@OMMT复合微球比单纯的商用球团PMMA与OMMT或PMMA微球与MMT混合更有效地提高了SAN的隔声性能。SAN/PMMA@OMMT （5 wt%）复合材料的平均声透射损失（STL）可达38.97 dB，考虑到材料厚度较薄、填充材料较少等因素，这一结果超过了以往的报道。采用动态力学分析方法，分析了PMMA@OMMT在SAN上的增声机理。这项工作将拓宽OMMT在隔声中的应用，为轻量化隔声材料的设计提供新的思路。

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.