Morphology and Thermal Stability of Novolac Phenolic Resin/Clay Nanocomposites Prepared via Solution High-Shear Mixing

作者：Zhang Zhihao; Ye Guozhong; Toghiani Hossein; Pittman Charles U Jr^*

来源：Macromolecular Materials and Engineering, 2010, 295(10): 923-933.

DOI：10.1002/mame.201000153

• clay
• morphology
• nanocomposites
• Novolac phenolic resin
• thermal stability

Phenolic resin/clay composites were prepared by high-shear mixing of clay suspended in CH(3)OH solutions of Novolac resin and curing agent. Pure clay Cloisite Na(+) and pillared clays Cloisite 10A, 30B, and Na(+)Cloisite that was pillared by 3-hexadecyl-1-methylimidazolium bromide were studied. After CH(3)OH evaporation, Novolac was cured at low temperatures. XRD showed that clay gallery d-spacings decreased upon solvent evaporation and partial curing. Slight d-spacing increases were sometimes observed from a partially cured stage to a further cured composite. Na(+)Cloisite gave the highest nanodispersion, Cloisites 10A and 30B the lowest. TGA revealed that Na(+) clay or organoclay incorporation in partially cured and cured composites did not improve the thermal stability of Novolac.

• 出版日期2010-10-12