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- Title
Polymer-Clay Nanocomposites: Exfoliation and Intercalation of Organophilic Montmorillonite Nanofillers in Styrene–Limonene Copolymer.
- Authors
Hodhaifa Derdar; Meghabar, Rachid; Benachour, Mohamed; Mitchell, Geoffrey Robert; Bachari, Khaldoun; Belbachir, Mohammed; Cherifi, Zakaria; Baghdadli, Mohammed Chakib; Harrane, Amine
- Abstract
Nanocomposites from Styrene-Limonene copolymers and Algerian organophilic-clay named Maghnite-CTA+ (Mag-CTA+), were prepared by in-situ polymerization using different amounts (2, 5, and 10% by weight) of clay and Azobisisobutyronitrile (AIBN) as a catalyst. The Mag-CTA+ is an organophilic silicate clay prepared through a direct exchange process, using Cetyltrimethylammonuim bromide (CTAB) in which it used as green nano-filler. The preparation method of nanocomposites was studied in order to determine and improve structural, morphological and thermal properties of Sty-Lim copolymer. The structure and morphology of the obtained nanocomposites (Sty-Lim/Mag) were determined using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electronic microscopy (SEM) and transmission electronic microscopy (TEM). The analyses confirmed the chemical modification of clay layers and the intercalation of Sty-Lim copolymer within the organophilic clay sheets. Exfoliated structure was obtained for the lower amount of clay (2 wt %), while intercalated structures were detected for higher amounts of clay (5 and 10 wt %). The thermal properties of the obtained nanocomposites were studied by thermogravimetric analysis (TGA) and show a significant improvement in the thermal stability compared with the pure copolymer. The obtained nanocomposites show an optimal degradation temperature of 320°C.
- Subjects
FOURIER transform infrared spectroscopy; NANOCOMPOSITE materials; MONTMORILLONITE; COPOLYMERS; ANALYTICAL chemistry
- Publication
Polymer Science -- Series A, 2021, Vol 63, Issue 5, p568
- ISSN
0965-545X
- Publication type
Article
- DOI
10.1134/S0965545X21050023