Study on thermal stability and flame retardancy of polymer/layered silicate nanocomposites based on POE and POE-g-MAH



Ethylene-octene elastomer (POE)/organo-montmorillonite (OMT) and maleic anhydride-grafted POE (POE-g-MAH)/OMT composites were prepared through melt mixing and influence of clay dispersion on thermal, dynamic mechanical, and flammability properties were investigated. The results showed that OMT forms intercalated/exfoliated structures in POE-g-MAH/OMT and agglomerated structure in POE/OMT microcomposites, resulting in more significant improvements of storage modulus and glass transition temperature in the POE-g-MAH/OMT rather than the POE/OMT composites. The POE-g-MAH/OMT nanocomposites have better thermal stability and significantly reduced flammability than the POE/OMT microcomposites, which was discussed on the basis of cone colorimeter test of the composites and energy dispersive X-ray spectrum analysis of the combustion chars. POLYM. ENG. SCI., 54:2911–2917, 2014. © 2014 Society of Plastics Engineers