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| Titel: |
Processability and Properties of a Wood Flour Filled Polypropylene |
| Auteur: |
Rietveld, Jeroen X. Simon, Mark J. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 18 (1992) nr. 3-4 pagina's 213-235 |
| Jaar: |
1992-11-01 |
| Inhoud: |
The successful manufacture of natural fiber reinforeced thermoplastic composites is complicated by the hygroscopic and hydrophylic nature of cellulosic fillers, as well as by their limited thermal stability at typical melt processing temperaures. This study examines the processability and properties for several wood flour (WF)-polypropylene (PP) composites. Other studies on natural fiber reinforced thermoplastics have concentrated on the properties of these composites rather than on their processability, as such, relatively more is known about the hydrophylic consequences of cellulosic fillers relative to the hygroscopic consequences. A focus of this study was to carefully evaluate the positive and negative implications of absorbed moisture (within the WF) on the mechnical and rheological behavior of such composites. Filler-matrix dry blends of 45wt% WF-PP and 55wt% WF-PP were compounded/pelletized on a 38 mm single screw extruder. The pelletized feedstock was subsequently melt-processed on a 667 kN/108 cm3 injection molding machine (into a standard tesile bar mold) and on a 19 mm single screw extruder (therough a capillary die). The results from an analysis of process monitoring and material property data were then used to identify the impact of absorbed moisture on the processability and performance of cellulosic/thermoplastic composites. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 9 van 10 gevonden artikelen
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