Dynamic mechanical behaviour of modified hydroxyapatite reinforced polyethylene composites

Fillers, when surface treated with a silane coupling agent, disperse more in a polymer matrix and promote better adhesion between the filler particles and matrix polymer. When a matrix polymer is unreactive, adhesion is not expected to improve by the action of coupling agents alone. The presence of a grafting agent facilitates reaction between the surface treated hydroxyapatite (HA) and the polyethylene matrix, thus improving the mechanical properties. The results obtained on the composites indicate that attempts to graft and/or couple HA to polyethylene leads to a reduction in modulus values.link_to_subscribed_fulltex