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Aqueous Miscible Organic (AMO) Process for Layered Double Hydroxides (LDHs) on Enhanced Properties of Polypropylene/LDH Composites

Abstract

Enhancing the compatbility between inorgnic filler and polymer to obtain functionalized composite has always been a key issue. An aqueous miscible organic (AMO) method is here successfully adapted for the conventional layered double hydroxides (LDH) fillers. Here, a series of D-LDH hybrid materials, intercalated by an organic antioxidant DBHP (D, 3-(3,5-ditertbutyl-4-hydroxyphenyl) propionate), have been organically surface-modified using acetone as the solvent through the AMO method. To understand the effect of acetone exposure on the structure of AMO D-LDH samples, XRD, FT-IR, TG-DTA and radical-scavenging activity were thoroughly characterized. The results indicated that the AMO method does not affect the layer structure of D-LDH but causes the co-intercalation of D- with CO32- anions, which change the amount of DBHP in the interlayer and then influence the crystallinity, thermal stability and the radical-scavenging activity of D-LDH. Subsequently, the series of AMO D-LDH was used as an anti-aging nanofiller for polypropylene (PP). The thermal stability, thermal-aging properties and migration resistance of the resulting PP/D-LDH (h) composites were investigated systematically. The results showed that the AMO modification of D-LDH affects the content of DBHP and the interaction between LDH filler and PP chains, since an optimized modification time and content of DBHP are found to enhance the anti-aging performance of PP, as well as to limit the migration of DBHP molecule out of PP films.

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Supplementary files

Article information


Submitted
30 Dec 2019
Accepted
13 Mar 2020
First published
16 Mar 2020

New J. Chem., 2020, Accepted Manuscript
Article type
Paper

Aqueous Miscible Organic (AMO) Process for Layered Double Hydroxides (LDHs) on Enhanced Properties of Polypropylene/LDH Composites

Q. Zhang, Y. Guo, F. Leroux, D. Li, P. Tang, L. Wang and Y. Feng, New J. Chem., 2020, Accepted Manuscript , DOI: 10.1039/C9NJ06444C

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