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Elkasaby M, Hegab HA, Mohany A, Rizvi GM. Modeling and optimization of electrospinning of polyvinyl alcohol (PVA). Adv Polym Technol 2017. [DOI: 10.1002/adv.21869] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mohamed Elkasaby
- Faculty of Engineering and Applied Science; UOIT; Oshawa ON Canada
| | - Hussien A. Hegab
- Faculty of Engineering and Applied Science; UOIT; Oshawa ON Canada
| | - Atef Mohany
- Faculty of Engineering and Applied Science; UOIT; Oshawa ON Canada
| | - Ghaus M. Rizvi
- Faculty of Engineering and Applied Science; UOIT; Oshawa ON Canada
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Abstract
It is believed that the moisture that is inherently present in nondried wood-fibers adversely affects the cell morphology of plastic/wood-fiber composite foams processed in extrusion. Based on this hypothesis, achieving a continuous extrusion-based production of fine-celled plastic/wood-fiber composite foams witha desirable quality would be strongly conditioned by the efficiency of the system designed for uninterrupted wood-fiber moisture elimination. This paper presents an innovative approachin addressing this problem by implementing the well-known cascade devolatilizing system in a chemical blowing agent (CBA) based production of plastic/wood-fiber composite foams. It comprises a moisture-evaporation tandem extrusion system equipped witha vent at the interconnection of the two extruders to serve for purging the moisture in the atmosphere. In order to check the performance of the newly developed system, an experimental study has been carried out for comparing the cell morphology and the volume expansion ratios of the foams obtained by processing identically formulated foamable plastic/wood-fiber composite mixtures using simultaneously the cascade devolatilizing tandem extrusion system and a corresponding single extruder withno vent. The experimental results revealed that the foams produced by using the cascade devolatilizing tandem system exhibited significantly improved cell morphologies and surface quality.
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Affiliation(s)
- Ghaus M. Rizvi
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical & Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto, Ontario, Canada M5S 3G8
| | - Remon Pop-Iliev
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical & Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto, Ontario, Canada M5S 3G8
| | - Chul B. Parky
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical & Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto, Ontario, Canada M5S 3G8
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Zhang J, Park CB, Rizvi GM, Huang H, Guo Q. Investigation on the uniformity of high-density polyethylene/wood fiber composites in a twin-screw extruder. J Appl Polym Sci 2009. [DOI: 10.1002/app.29991] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Pop-Iliev R, Rizvi GM, Park CB. The importance of timely polymer sintering while processing polypropylene foams in rotational molding. POLYM ENG SCI 2004. [DOI: 10.1002/pen.10003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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