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http://dx.doi.org/10.7317/pk.2014.38.5.566

Effect of Maleic Ahydride Grafted PP on the Physical Properties of PP/Pulp Composites  

Lee, Jong Won (Major in Polymer Science and Engineering, Kongju National University)
Kim, Won Gil (Hanilewha)
Kim, Youn Cheol (Major in Polymer Science and Engineering, Kongju National University)
Publication Information
Polymer(Korea) / v.38, no.5, 2014 , pp. 566-572 More about this Journal
Abstract
Maleic anhydride (MAH) grafted polypropylenes (PP) (MAH-g-PP) were prepared by changing MAH content and styrene monomer (SM)/MAH mole ratio with different type PP, using a twin screw extruder. The types of PP were isotatic PP (iPP), block PP (bPP), and random PP (rPP) and dicumyl peroxide (DCP) was used as an initiator. The graft degree of MAH was confirmed by the existence of carbonyl group (C=O) stretching peak at $3100cm^{-1}$ of FTIR spectrum. Thermal properties of MAH-g-PP and PP/MAH-g-PP/pulp composites were investigated by DSC and TGA. There was no district change in thermal properties of PP/MAH-g-PP/pulp composites. Based on tensile properties and SEM pictures for fractured surface of PP/MAH-g-PP/pulp composites, MAH-g-rPP was the best as the compatibilizer and optimum formulation was MAH content of 1.0 wt%, SM/MAH mole ratio of 1.0, and melt index (MI) of 25 g/10 min. The rheological properties of the composites were investigated by a dynamic rheometer. The complex viscosity, shear thinning effect, and water uptake incresed with pulp content.
Keywords
polypropylene; pulp; composite; MAH-g-PP; tensile properties;
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