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

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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

Published: 10 May 2025 Online: 2025-04-28

CLC number:

TB332

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	Articles by authors
	ZHANG Long
	YAO Xuwen
	CHE Chunxia
	QIN Zhi
	LI Guozhou
	HAN Yinghong
	YANG Bo

Cite this article:

ZHANG Long,YAO Xuwen,CHE Chunxia, et al. Study on Mechanical Properties and Thermal Stability of Janus Nanoparticles Reinforced PP/PMMA Polymer Blends[J]. Materials Reports, 2025, 39(9): 24010255-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24010255 OR https://www.mater-rep.com/EN/Y2025/V39/I9/24010255

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