title: A biomimetic approach to enhancing interfacial interactions: polydopamine-coated clay as reinforcement for epoxy resin.
abstract: A facile biomimetic method was developed to enhance the interfacial interaction in polymer-layered silicate nanocomposites. By mimicking mussel adhesive proteins, a monolayer of polydopamine was constructed on clay surface by a controllable coating method. The modified clay (D-clay) was incorporated into an epoxy resin, it is found that the strong interfacial interactions brought by the polydopamine benefits not only the dispersion of the D-clay in the epoxy but also the effective interfacial stress transfer, leading to greatly improved thermomechanical properties at very low inorganic loadings. Rheological and infrared spectroscopic studies show that the interfacial interactions between the D-clay and epoxy are dominated by the hydrogen bonds between the catechol-enriched polydopamine and the epoxy.
authors: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Republic of Singapore.
authors: Liping
authors: L
authors: Yang
authors: Si Lei
authors: SL
authors: Phua
authors: Jun Kai Herman
authors: JK
authors: Teo
authors: Cher Ling
authors: CL
authors: Toh
authors: Soo Khim
authors: SK
authors: Lau
authors: Jan
authors: J
authors: Ma
authors: Xuehong
authors: X
authors: Lu
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry*; D032701:Biomimetics / Q000379:methods*; D002396:Catechols / Q000737:chemistry; D000077215:Clay; D004853:Epoxy Resins / Q000737:chemistry*; D006860:Hydrogen Bonding; D007211:Indoles / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*
chemical_list: D000538:Aluminum Silicates; D002396:Catechols; D004853:Epoxy Resins; D007211:Indoles; D011108:Polymers; C568283:polydopamine; C034221:catechol; D000077215:Clay