Influence of matrix polymer on melt strength and viscosity of wood flour reinforced composites
Source abstract
Abstract
The paper presents results of our recent studies on the viscoelastic characteristics of thermoplastic composites filled with 30 wt.% of wood flour (WF), as a part of the foaming program. PP, HDPE and PVC were used as polymer matrices. Melt processability has been characterized by MFI tests in temperature of 180°C, 190°C and 200°C. It has been shown that the composites based on PP and PVC were easier flowing than HDPE in that range of temperature. Melt viscosity results suggested a thermal degradation of PVC. However, wood flour exhibited a stabilizing effect on PVC in PVC/WF composites. Melt strength tests have shown that the compatibilized PP/WF composite should be useful for foaming. Set of experiments with a chemical blowing agent has been performed in the single-screw extruder, which confirmed that supposition.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polymer Foaming and Composites · Natural Fiber Reinforced Composites · Polymer crystallization and properties
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References (9)
Show source-provided references
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