(a) acting as a toughening agent,
(b)improving the connectivity in the network,
(c) adding additional stiffening groups to the matrix,
(d) acting as a sizing agent between natural fibers and the resin matrix,
(e)behaving as a comonomer for the resin,
(f) inducing plasticityin the deformation zone at crack tips to improve toughness,
(g) acting as a free radical trap to reduce radical scission
effects during fracture in highly cross linked polymers,
(h)improving flame resistance,
(i) modifying biodegradability,
(j) providing enhanced photoresistance and thermal stability,
(k) expanding fatigue lifetime,
(l) contributing to the
green engineering of materials.