Encapsulation of organomontmorillonite platelets through miniemulsion polymerization inside poly(methyl methacrylate) latex particles: synthesis and thermal properties
Akelah, A., Rehab, A., Harhash, H., Mandour, H. (2024). Encapsulation of organomontmorillonite platelets through miniemulsion polymerization inside poly(methyl methacrylate) latex particles: synthesis and thermal properties. EKB Journal Management System, 49(2), 82-98. doi: 10.21608/djs.2025.342274.1204
Ahmed Akelah; Ahmed Rehab; Hisham Harhash; Hamada SA Mandour. "Encapsulation of organomontmorillonite platelets through miniemulsion polymerization inside poly(methyl methacrylate) latex particles: synthesis and thermal properties". EKB Journal Management System, 49, 2, 2024, 82-98. doi: 10.21608/djs.2025.342274.1204
Akelah, A., Rehab, A., Harhash, H., Mandour, H. (2024). 'Encapsulation of organomontmorillonite platelets through miniemulsion polymerization inside poly(methyl methacrylate) latex particles: synthesis and thermal properties', EKB Journal Management System, 49(2), pp. 82-98. doi: 10.21608/djs.2025.342274.1204
Akelah, A., Rehab, A., Harhash, H., Mandour, H. Encapsulation of organomontmorillonite platelets through miniemulsion polymerization inside poly(methyl methacrylate) latex particles: synthesis and thermal properties. EKB Journal Management System, 2024; 49(2): 82-98. doi: 10.21608/djs.2025.342274.1204

Encapsulation of organomontmorillonite platelets through miniemulsion polymerization inside poly(methyl methacrylate) latex particles: synthesis and thermal properties

Delta Journal of Science
Volume 49, Issue 2, December 2024, Page 82-98  XML PDF (841.22 K)
Document Type: Research and Reference
DOI: 10.21608/djs.2025.342274.1204
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Authors
Ahmed Akelah1; Ahmed Rehab2; Hisham Harhash1; Hamada SA Mandour email orcid 3
1Chemistry department-Faculty of Science Tanta University-Tanta Egypt
2Chemistry department, Faculty of science, Tanta University
3Chemistry department-Faculty of Science-Tanta University-Tanta Egypt
Abstract
In this study, encapsulation of montmorillonite (MMT) platelets into poly(methyl methacrylate) (PMMA) was successfully achieved via miniemulsion polymerization. First, N-allyl-N,N-dimethyloctadecan-1-aminium bromide (ADM18), a polymerizable surfactant, was employed to modify MMT nanoplatelets via ion exchange to improve the compatibility with the matrix phase as well as form a covalent anchor with PMMA. Subsequently, MMT-ADM18 was incorporated in methyl methacrylate, along with a surfactant, costabilizer, and initiator, to obtain stable nanocomposite latexes via miniemulsion polymerization. FTIR (Fourier transform infrared spectroscopy), XRD (X-ray diffraction), SEM (Scanning electron microscopy), TEM (Transmission electron microscopy), and TGA (Thermogravimetric analysis) were utilized to validate structures and characterize thermal properties of neat PMMA and PMMA-based nanocomposites. FTIR indicated an interaction occurred between MMT’s structural OH groups and PMMA’s carbonyl moiety. XRD exhibited that the nanocomposites' morphology exfoliated. TEM images demonstrated stable nanocomposite latexes comprised of MMT core and PMMA shell with diameters ranging from 320 to 450 nm were formed. The TGA results showed a substantial improvement in nanocomposites’ thermal stability, as evidenced by shifting the onset of the thermal degradation compared to that for pristine PMMA.
Keywords
Montmorillonite; Methyl methacrylate monomer; Miniemulsion; Nanocomposite; Encapsulation
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