Mechanical, viscoelastic and gas transport behaviour of rotationally molded polyethylene composites with hard- and soft-wood natural fibres

Abstract Rotomolded uncompatibilized composites of LLDPE with softwood and hardwood flour dispersed phases are compared contrasted respect to their static (tensile, flexural impact) dynamic (creep modelling, storage loss moduli) mechanical properties transport (oxygen permeability). The analysed as a function phase weight fraction pre post ethanol sorption. Vital structural such the equilibrium modulus, Kelvin Voigt viscosity relaxation times along creep compliance trends analysed. interfacial porosity generated is then correlated overall gas using oxygen probe molecule. Two models it found that model Alter which uses density modelling parameter, able predict composite permeability high accuracy. Overall, owing nature, most reduce wood incorporation independent type phase. However, these remain consistent sorption long around 5%. This indicates some external scaffolding support structures, rotomolded have potential for use units liquid materials. Graphical abstract