Janus粒子增强PP/PMMA共混聚合物材料的力学和热稳定性能的研究

doi:10.11896/cldb.24010255

材料导报

2025, Vol. 39

Issue (9): 24010255-8 https://doi.org/10.11896/cldb.24010255

高分子与聚合物基复合材料

Janus粒子增强PP/PMMA共混聚合物材料的力学和热稳定性能的研究

张龙^1,2,*, 姚旭文^1,2, 车春霞³, 秦智^1,2, 李国洲^1,2, 韩迎红³, 杨博³

1 兰州理工大学材料科学与工程学院,兰州 730050
2 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州 730050
3 中国石油石油化工研究院兰州化工研究中心,兰州 730060

Study on Mechanical Properties and Thermal Stability of Janus Nanoparticles Reinforced PP/PMMA Polymer Blends

ZHANG Long^1,2,*, YAO Xuwen^1,2, CHE Chunxia³, QIN Zhi^1,2, LI Guozhou^1,2, HAN Yinghong³, YANG Bo³

1 School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
2 State Key Laboratory of Advanced Processing and Reuse of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
3 Lanzhou Chemical Research Center, PetroChina Research Institute of Petrochemical Engineering, Lanzhou 730060, China

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摘要聚丙烯(PP)/聚甲基丙烯酸甲酯(PMMA)复合材料具有良好的力学性能和耐热性,但PP与PMMA相容性较差,导致材料力学性能和热稳定性受限。本工作采用乳液聚合法制备了尺寸约118 nm的聚苯乙烯共聚甲基丙烯酸甲酯/聚苯乙烯(P(St-co-MMA)/PS) Janus不对称乳胶纳米粒子(P(St-co-MMA) Janus NPs),将其以不同比例添加到PP/10% PMMA和PP/30% PMMA体系中,经熔融共混、注塑成型技术得到PP/PMMA/P-(St-co-MMA) Janus NPs复合材料,并进行了相关表征分析。结果表明,引入的P(St-co-MMA) Janus NPs分散在PP/PMMA复合材料中的两相界面处,其可显著改善复合材料的力学性能和热稳定性能。PP/10% PMMA/0.9% P(St-co-MMA) Janus NPs相比PP/10% PMMA,冲击强度和拉伸强度分别提高15.53%和14.03%;PP/30% PMMA/0.9% P(St-co-MMA) Janus NPs相比PP/30% PMMA,冲击强度和拉伸强度分别提高37.09%和32.35%,且热失重5%和50%对应的温度(T₅和T₅₀)分别升高39.51%和33.37%。P(St-co-MMA) Janus纳米粒子对PP/PMMA复合材料的增强作用归因于其能够阻碍相分离、增强界面结合等。

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	张龙
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	李国洲
	韩迎红
	杨博

关键词: Janus纳米粒子聚合物共混增容剂相界面

Abstract: Polypropylene/poly(methyl methacrylate) (PP/PMMA) composites have good mechanical properties and heat resistance, but poor compatibility between PP and PMMA results in limited mechanical properties and thermal stability. In this study, via emulsion polymerization, the poly(styrene-co-methyl methacrylate)/polystyrene (P(St-co-MMA)/PS) Janus asymmetric latex nanoparticles (P(St-co-MMA) Janus NPs) with a size of about 118 nm were prepared, which were then introduced with different ratios into PP/10wt% PMMA and PP/30wt% PMMA systems to fabricate PP/PMMA/P(St-co-MMA) Janus NPs polymer blends using the techniques of melt blending and injection molding. Relevant analytical characterization was carried out, which indicated the dispersion of Janus nanoparticles introduced at the PP-PMMA interface, and as a consequence, the significant improvement in mechanical properties and thermal stability of the composites. There had been found, 15.53% and 14.03% increments for PP/10wt% PMMA/0.9wt% P(St-co-MMA) Janus NPs composite and 37.09% and 32.35% ones for PP/30wt% PMMA/0.9wt% P(St-co-MMA) Janus NPs composite in impact and tensile strengths, respectively, as well as 39.51% and 33.37% rises at T₅ and T₅₀ (temperatures at 5% and 50% thermogravimetric weight losses) in PP/30wt% PMMA/0.9wt% P(St-co-MMA) Janus NPs composite, respectively, compared to their corresponding PP/PMMA analogues without Janus nanoparticles (PP/10wt% PMMA and PP/30wt% PMMA). The enhancement of P(St-co-MMA) Janus nanoparticles to mechanical properties and thermal stability of PP/PMMA polymer blends can be attributed to their capability of blocking phase separation and strengthening interfacial bonding.

Key words: Janus nanoparticle polymer blend compatibilizer phase interface

出版日期: 2025-05-10 发布日期: 2025-04-28

ZTFLH:

TB332

基金资助: 国家自然科学基金(22066015);甘肃省重大科技专项(22ZD6GA008)

通讯作者: ^*张龙,博士,兰州理工大学副教授,主要从事高分子微/纳米结构的设计与应用研究。zhanglong@lut.edu.cn

引用本文:

张龙, 姚旭文, 车春霞, 秦智, 李国洲, 韩迎红, 杨博. Janus粒子增强PP/PMMA共混聚合物材料的力学和热稳定性能的研究[J]. 材料导报, 2025, 39(9): 24010255-8.
ZHANG Long, YAO Xuwen, CHE Chunxia, QIN Zhi, LI Guozhou, HAN Yinghong, YANG Bo. Study on Mechanical Properties and Thermal Stability of Janus Nanoparticles Reinforced PP/PMMA Polymer Blends. Materials Reports, 2025, 39(9): 24010255-8.

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https://www.mater-rep.com/CN/10.11896/cldb.24010255 或 https://www.mater-rep.com/CN/Y2025/V39/I9/24010255

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