Author/Authors :
NOUM, SE YONG EH Universiti Kebangsaan Malaysia - Faculty of Science and Technology, School of Applied Physic, Malaysia , AHMAD, SAHRIM Universiti Kebangsaan Malaysia - Faculty of Science and Technology, School of Applied Physic, Malaysia , RASID, ROZAIDI Universiti Kebangsaan Malaysia - Faculty of Science and Technology, School of Applied Physic, Malaysia , HOCK, YEW CHIN Universiti Kebangsaan Malaysia - Faculty of Science and Technology, School of Applied Physic, Malaysia , SENG, LEE YIP Universiti Kebangsaan Malaysia - Faculty of Science and Technology, School of Applied Physic, Malaysia , TARAWNEH, MOU’AD A. Universiti Kebangsaan Malaysia - Faculty of Science and Technology, School of Applied Physic, Malaysia
Abstract :
OMMT (organo-montmorillonite) and epoxidized natural rubber (ENR) filled epoxy hybrid composites were produced via co-rotating twin-screw extrusion technique. Tensile test on the epoxy composites systems shows that the Young’s modulus of the epoxy hybrid composites were higher than the Young’s modulus of unfilled epoxy and the value of the modulus were found to be increasing with the increase of OMMT composition in the matrix (exceeding 40% increment). This finding is believed to be attributed to the stiff characteristic of MMT. Meanwhile, the presence of fillers resulted in the decrement of yeild stress and strain at break of the hybrid composites. Microstructure examination on the hybrid composites via TEM and XRD techniques showed that the distribution of OMMT in the matrix consist of intercalation and exfoliation. DSC analysis on the cured sample showed that the Tg of the hybrid system is lower than the binary system (E5B and E5LE). It was suggested that the decrement of the cross link density is the reason for the decline in Tg.
Keywords :
Epoxidized natural rubber , epoxy composites , organo , monmorillonite , twin screw extruder
