Synthesis of epoxy–montmorillonite nanocomposite

摘要: To synthesize an epoxy–montmorillonite nanocomposite, the intercalation of clay layers with acid onium ions {[H3N(CH2)n−1COOH]+, [H3N(CH2)n−1CH3]+, [H3N(CH2)−NH2]+, and [H3N(CH2)nNH3]2+} by different methods were studied. The intercalated was characterized XRD, ICP, CHN elemental analysis. An ion [H3N(CH2)17CH3]+ enlarged d-spacing CWC–, AMS–, Kunipia–montmorillonite to 21.6, 18.1, 20.7 A, respectively. results analysis confirmed that between layers. Ion exchange montmorillonite is a better way intercalate more ions. Among those mentioned above, [H3N(CH2)nNH3]2+ displaced sodium from than did others. nanocomposite synthesized heating mixture [H3N(CH2)17CH3]+–montmorillonite (CWC) epoxy monomer curing agent. TEM, DSC, UV, TGA, Instron testing. TEM photographs showed spacing further about 50 A no segregation particle polymer observed. glass transition temperature containing 20 phr increased 108.4 146.1°C. Especially, possesses higher water resistance resin or physical (CWC). According transmittance measurement (λ = 550 nm), shows good light transmittance. Although, we cannot improve mechanical properties, improvements other properties can be evidenced for formation nanoscale composites. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 414–421,