02075nam a2200229Ia 4500 MX-MdCICY 20260521091622.0 CICY B-18205 The effect of chemical composition of interphase on dispersion of cellulose fibers in polymers. I. PVC?coated cellulose in polystyrene Journal of applied Polymer Science, 49(2), p.197-208, 1993 Cellulose fibers surface?coated with butyl benzyl phthalate (BBP)?plasticized PVC were evaluated as a reinforcement in thermoplastic matrices. Coated fibers were agglomerated during compounding with polypropylene (PP)and polyethylene (PE). However, an excellent dispersion and improved processability were achieved in polystyrene (PS). Melt rheology was also seen to be affected by fiber coating, and viscosity was lower for coated fibers. Fiber coatings seem to lubricate the blending process as well as to protect fiber from damage during processing. Fiber length was unaffected during treatment when coated fibers were used, as shown by microscopic investigation of extracted fibers, whereas the length of untreated fibers was reduced during processing. Introducing surface?coated fibers into PS resulted in an increased elongation at break and improved impact strength of composites. The pullout of the fibers is suggested to be responsible for both improvements. The interphase achieved in PS with PVC/BBP?coated fibers was simulated with PS/PVC/BBP blends. From DSC and DMTA, it was shown that BBP is a cosolvent for PS and PVC and that a single?phase material was achieved at the relevant concentrations, which also was confirmed by optical clarity. CELLULOSE FIBERS POLYMERS POLYSTYRENE Gatenholm, P. Bertilsson, H. Mathiasson, A. https://drive.google.com/file/d/1PbY3TGi6MTueKCb441lvZPjOJIFzjgg1/view?usp=drivesdk Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx Loc REF1 250602s9999 xx |||||s2 |||| ||und|d 28297 28297 0 0 Loc 0 0 F1 CICY CICY RE 2025-06-25 0 B-18205 2025-06-25 16:02:25 2025-06-25 REF1