This Thesis presents a study on feasibility of continuous extrusion processing for the manufacture of fine-celled plastic/wood-fiber composite foams. The main benefits of incorporating wood-fibers in plastics are the increased stiffness and lowered cost of the resulting composit…
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In the past decade the need for development of specifically engineered structures of polymers has resulted in proliferation of products that are manufactured using various coating and multilayer extrusion technologies. It was well known that this class of flows are susceptible t…
In the recent past it has been found that a considerable pressure drop occurred during the extrusion of linear polyethylene in the course of capillary flow. The pressure drop resides within a narrow temperature window of one to two degrees Celsius. In this research the hydrodyna…
Novel solutions to offset thermal degradation of polyamide-6 (PA-6) and organoclay (organically modified layered silicates) nanocomposites during melt compounding have been investigated. In this research, a novel chain extender (Joncryl ADR 3400) has been used to improve thermal…
A novel on-line capillary rheometer (OLR) was used to examine the shear and extensional characteristics of polyolefin melts during twin screw extrusion (TSE). Comparisons with off-line rheometry were made using a twin-bore capillary rheometer and a modular in-line slit die rheom…
This thesis reports a fundamental study on microwave assisted moulding (MAM), a novel technology where expandable starch based pellets made from extrusion are expanded within a mould cavity into blocks using microwave heating. Foamability or degree of expansion of starch-based p…
A reversible solid oxide fuel cell (RSOFC) system could buffer intermittent electrical generation, e.g. wind, wave power by storing electrical energy as hydrogen and heat. RSOFC were fabricated by thermoplastic extrusion of (La₀.₈Sr₀.₂)₀.₉₅MnO[subscript(3−δ)] (LSM) ceramic suppo…
Highly viscous substances, such as feces, produce significant heat when layer deformation occurs. We describe the use of viscous heating to destroy disease-causing microorganisms and whipworms in feces using a small amount of power. The laboratory-scale unit has a rotating centr…