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The Stability of Intercalated Sericite by Cetyl Trimethylammonium Ion under Different Conditions and the Preparation of Sericite/Polymer Nanocomposites

1
School of Materials Science and Technology, Shenyang University of Chemical Technology, Shenyang 110142, China
2
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
3
College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(5), 900; https://doi.org/10.3390/polym11050900
Received: 27 April 2019 / Revised: 11 May 2019 / Accepted: 12 May 2019 / Published: 17 May 2019
(This article belongs to the Special Issue Polymer Clay Nano-composites)
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PDF [4001 KB, uploaded 17 May 2019]
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Abstract

Layered silicates are suitable for use as fillers in nanocomposites based on their particular features, such as large aspect ratio, easy availability, and chemical resistance. Among them, sericite is distinguished for its higher aspect ratio, higher resilience, and ultraviolet shielding and absorption. Previously, sericite was structure-modified and intercalated by CTAB to expand its interlayer space. The intercalated sericite seems promising for use in the fabrication of polymer/sericite composites or pillared sericite. However, special attention should be paid to the stability of the intercalated sericite because the CTAB inside the layer may be de-intercalated, which would affect the interlayer spacing and its surface properties. In this article, the stability of the sericite intercalated by CTAB was tested by changing different variables, such as different washing solvents, different temperatures, ultrasonic cleaning, and different solution conditions. Finally, sericite/polymer nanocomposites were produced with the stable intercalated sericite, and showed excellent properties compared with pure epoxy resin. View Full-Text
Keywords: layered silicate; sericite; CTAB; intercalation stability; nanocomposites layered silicate; sericite; CTAB; intercalation stability; nanocomposites
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Liang, Y.; Yang, D.; Yang, T.; Liang, N.; Ding, H. The Stability of Intercalated Sericite by Cetyl Trimethylammonium Ion under Different Conditions and the Preparation of Sericite/Polymer Nanocomposites. Polymers 2019, 11, 900.

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