Aliphatic polyamidoamine hyperbranched polymers/layered silicate nanocomposites

• Published in: Journal of applied polymer science 2010-10, Vol.118 (1), p.525-537
• Main Authors: Amin, A, Taha, A.S, Abd El-Ghaffar, M.A
• Format: Article
• Language: English
• Subjects: Applied sciences; ATRP; Clay (material); Composites; Exact sciences and technology; Forms of application and semi-finished materials; hyperbranched polymers; Laponite; Monomers; Montmorillonite; Nanocomposites; Polymer industry, paints, wood; Polymerization; Polymethyl methacrylates; Radicals; Silicates; Technology of polymers
• ISSN: 0021-8995; 1097-4628; 1097-4628
• DOI: 10.1002/app.32361

Polyamidoamine hyperbranched polymer (Hyp)/clay nanocomposites were synthesized by using both of montmorillonite and laponite clays. Poly amidoamine hyperbranched polymer (Hyp) was prepared by one-pot polymerization via couple monomer methodology. Afterward, the amino ends of Hyp were modified with methyl methacrylate (MMA), styrene (St) and butyl methacrylate (n-BuMA) polymers which were previously prepared via ATRP (atom transfer radical polymerization) to form the corresponding new hyperbranched polymers Hyp₁, Hyp₂ and Hyp₃. Those formed polymers were inserted into the modified clay, such as montmorillonite and laponite to form their nanocomposites. The formed polymer/clay nanocomposites were characterized via XRD, TEM, and thermal analyses. The formed hyperbranched polymers generally showed intercalation behavior more than the exfoliation one mostly because of the bulkiness of the hyperbranched skeleton.