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Polymers 2017, 9(10), 490; https://doi.org/10.3390/polym9100490

Preparation of Isotactic Polypropylene/Exfoliated MoS2 Nanocomposites via In Situ Intercalative Polymerization

1
School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243000, China
2
Department of Polymer Science and Engineering, Kyungpook National University, Daegu 702-701, Korea
3
CAS Key Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China
*
Authors to whom correspondence should be addressed.
Received: 22 September 2017 / Revised: 30 September 2017 / Accepted: 30 September 2017 / Published: 7 October 2017
(This article belongs to the Special Issue Olefin Polymerization and Polyolefin)
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Abstract

In this research, a Ziegler–Natta catalyst intercalated MoS2 was synthesized through the intercalation of a Grignard reagent into MoS2 galleries, followed by the anchoring of TiCl4. During propylene polymerization, the intercalated MoS2 exfoliated in situ to form PP/exfoliated MoS2 (EMoS2) nanocomposites. The isotactic index values of the resultant PP/EMoS2 nanocomposites were as high as 99%, varying from 98.1% to 99.0%. It was found that the incorporation of the EMoS2 significantly improved the thermal stability and mechanical properties (tensile strength, modulus, and elongation at break) of PP. After introduction of EMoS2, the maximum increases in Td5% and Tdmax were 36.9 and 9.7 °C, respectively, relative to neat PP. After blending with commercial PP, the resultant nanocomposites increase in tensile strength and modulus up to 11.4% and 61.2% after 0.52 wt % EMoS2 loading. Thus, this work provides a new way to produce high-performance PP. View Full-Text
Keywords: Ziegler–Natta; isotactic polypropylene; molybdenum disulfide; in situ polymerization; nanocomposites Ziegler–Natta; isotactic polypropylene; molybdenum disulfide; in situ polymerization; nanocomposites
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Zhang, H.-X.; Zhang, X.-Q.; Yoon, K.-B. Preparation of Isotactic Polypropylene/Exfoliated MoS2 Nanocomposites via In Situ Intercalative Polymerization. Polymers 2017, 9, 490.

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