Journal of Applied Polymer Science · 2004 · 11 citations · 12 references
EngineeringVinyl ChlorideChemistryGraft CopolymerPolymersPolymer TechnologyMacromolecular EngineeringPolymer ProcessingRheologyPolymer ChemistryMaterials ScienceGraft CopolymerizationPolymer BlendPolymer EngineeringSingle‐screw ExtruderPolymer ScienceMelt GraftingPolymer CharacterizationPolymerization KineticsPolymer ReactionPolymer Synthesis
Abstract The graft copolymerization of n ‐butyl methacrylate monomer onto compounded poly(vinyl chloride) was carried out by melt‐mixing process in a Brabender plasticorder (BPCR) using a free‐radical initiator. The reaction conditions such as initiator and monomer concentration, shear rate (rpm), residence time, and temperature were optimized in the mixing head of BPCR attached to a torque rheometer. The graft copolymers were Soxhlet extracted with cyclohexane and were characterized by intrinsic viscosity, FTIR, and 13 C‐NMR spectroscopy. A maximum of 14% grafting was obtained. The graft copolymer showed significant improvement in processibility and both thermal and mechanical properties. Scale‐up studies of the optimized recipe were carried out in a single‐screw extruder for commercial trials/evaluation. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 2442–2449, 2004
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