Mechanical properties improvement of montmorillonite‐filled isotactic polypropylene nanocomposites by β‐modification

Dai, Xin; Zhang, Zishou; Chen, Chunyan; Ding, Qian; Li, Mei; Mai, Kancheng

doi:10.1002/pc.23934

Cited by 8 publications

(2 citation statements)

References 45 publications

(60 reference statements)

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“…The experimental formula is (2.5, 0.5), and the relative content of ⊎ crystal reaches a maximum. This shows that the hydrophobic nano-SiO 2 and WBG-II can jointly promote the production of ⊎ crystals, [43][44][45] and the increase of ⊎ crystals thereby improves the impact strength of the composite material.…”

Section: Isothermal Crystallization and Melting Behaviorsmentioning

confidence: 99%

Effect of hydrophobic nano‐silica/β‐nucleating agent on the crystallization behavior and mechanical properties of polypropylene random copolymers

Chen,

Bai,

Wang

et al. 2023

Polymer International

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In this work, hydrophobic nano‐silica (SiO2) and β‐nucleating agent are incorporated into polypropylene random copolymer (PP‐R) matrix by melt blending. The effect of nano‐SiO2/β‐nucleating agents content on crystallization and mechanical behaviors of polypropylene random copolymer was investigated in detail. When the nano‐SiO2 was 0.5 wt% and the β‐nucleating agent content was 0.5 wt%, the tensile strength and impact strength of the composite were in a more balanced position. Regarding isothermal and non‐isothermal crystallization experiments, nano‐SiO2/β‐nucleating agent significantly accelerated the nucleation and growth of crystallites with a synergistic nucleation effect. Also, the crystallization kinetics of PP‐R/nano‐SiO2 /β‐nucleating agent, PP‐R/nano‐SiO2 and PP‐R/β‐nucleating agent composites were analyzed and compared by Avrami equation. The results showed that the PP‐R/nano‐SiO2/β‐nucleating agent composites have better crystallization rate and shorter semi‐crystallization time. This study shows that it has far‐reaching theoretical and practical implications for accelerating the development of new high‐performance PP‐R materials.This article is protected by copyright. All rights reserved.

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Section: Isothermal Crystallization and Melting Behaviorsmentioning

confidence: 99%

Effect of hydrophobic nano‐silica/β‐nucleating agent on the crystallization behavior and mechanical properties of polypropylene random copolymers

Chen,

Bai,

Wang

et al. 2023

Polymer International

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“…However, the ordinary tensile properties have been the target for improvement in previous works where carbon nanofiller , graphene , polycarbonate , and calcium carbonate were used as to strengthen the UHMWPE matrix. In the past decades, montmorillonite (MMT) was usually used by various methods to improve the properties of polymers due to its mechanical performances , hardness , degradability , and dielectric property . The improvement depended on the effective dispersion of MMT layers which exhibited the exfoliation of MMT layers into individual platelets.…”

Section: Introductionmentioning

confidence: 99%

UHMWPE/organoclay nanocomposites fabricated by melt intercalation under continuous elongational flow: Dispersion, thermal behaviors and mechanical properties

Lin

Hou

Feng

et al. 2018

Polymer Engineering & Sci

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The preparation of ultra-high-molecular weight polyethylene (UHMWPE)/organoclay nanocomposites by continuous elongational flow technique was investigated in a novel eccentric rotor extruder (ERE). The distribution and dispersion morphologies of organo-modified montmorillonite (OMMT) layers were revealed and observed by ash determination, wide angle X-ray diffraction and transmission electron microscopy. The thermal and thermal-mechanical behaviors were characterized by differential scanning calorimeter, thermal gravimetric analysis and dynamic mechanical thermal analysis. The mechanical performances was measured by tensile and impact test. The morphologies of the nanocomposites evidenced that the OMMT layers can be well intercalated or/and exfoliated by UHMWPE matrix, then the fabrication mechanism of intercalated and exfoliated OMMT structures under continuous elongational flow was discussed. The ideal dispersion of OMMT in UHMWPE matrix obviously improved the crystallinity and the mechanical properties at a certain concentration of OMMT loading, indicating that the lower OMMT addition can lead an effective strengthening and toughening for UHMWPE. POLYM. ENG. SCI., 59:547-554, 2019.

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Compounding sequence as a critical factor in the dispersion of OMMT/hydrocarbon resin/PP-g-MA/PP nanocomposites

et al. 2018

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Mechanical properties improvement of montmorillonite‐filled isotactic polypropylene nanocomposites by β‐modification

Cited by 8 publications

References 45 publications

Effect of hydrophobic nano‐silica/β‐nucleating agent on the crystallization behavior and mechanical properties of polypropylene random copolymers

Effect of hydrophobic nano‐silica/β‐nucleating agent on the crystallization behavior and mechanical properties of polypropylene random copolymers

UHMWPE/organoclay nanocomposites fabricated by melt intercalation under continuous elongational flow: Dispersion, thermal behaviors and mechanical properties

Compounding sequence as a critical factor in the dispersion of OMMT/hydrocarbon resin/PP-g-MA/PP nanocomposites

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