Controlling the Interfacial Interactions Between Clay and Host Polyamide 6 Matrix
Previous chapters have provided thorough knowledge of catalytic effect of clay on the thermo-oxidative decomposition of PA6, particularly ignition. This chapter focuses on controlling the interfacial interactions between clay and PA6 to restrict or entirely prevent direct matrix-clay interface. Accordingly, organically modified clay was coated with high-temperature-resistant polymers, viz. PEI and PI before melt compounding with PA6. Huge reductions in HRR are seen even with coated clays as in previous chapters. More importantly, early ignition of composites was avoided confirming the impact of matrix-clay interface. This simple solution provides a potential solution for the major issue of early ignition in polymer/clay nanocomposites.
- 4.D.J. Chaiko, Process for the preparation of organoclays, US 6521678 B1 (2003)Google Scholar