dc.contributor.advisor | Hsieh, Fu-hung | eng |
dc.contributor.author | Fan, Hongyu | eng |
dc.date.issued | 2011 | eng |
dc.date.submitted | 2011 Fall | eng |
dc.description | Title from PDF of title page (University of Missouri--Columbia, viewed on May 25, 2012). | eng |
dc.description | The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract, appears in the public.pdf file. | eng |
dc.description | Dissertation advisor: Dr. Fu-Hung Hsieh | eng |
dc.description | Vita. | eng |
dc.description | Ph. D. University of Missouri--Columbia 2011. | eng |
dc.description | "December 2011" | eng |
dc.description.abstract | Polyurethane (PU) foams have great applications in industry. The raw materials of PU, polyol and isocyanate, are conventionally derived from petroleum. Bio-based polyols are promising substitutes for petrochemical polyols due to their sustainability. This project studied water-blown polyurethane (PU) foams made from soy-polyols. The flexible bio-based PU foams were successfully produced by mixing petroleum polyol and commercial soy-polyols with different hydroxyl numbers and functionalities. The effect of hydroxyl number and functionality of soy-polyols, and the effect of tin catalyst, cross-linker levels and isocyanate index on foam properties were identified. Water-blown rigid polyurethane (PU) foams were made from 0-50% soy-phosphate polyol (SPP) and 2-4% water as the blowing agent. The effects of water content and isocyanate index on physical properties of SPP PU foams were investigated. Low density soy-polyol based rigid PU foams were modified with different concentrations of glass microspheres and nanoclay. The physical properties, especially the mechanical properties, were studied. The effects of high viscosity soy-polyols (13,000 cP to 31,000 cP) on water-blown rigid polyurethane foams (SBO PU foams) containing 1-50% high viscosity soy-polyols were investigated. With regard to density-compressive strength, foams made from high viscosity (21,000 to 31,000 cP) soy-polyols demonstrated comparable or superior value to the control foam. | eng |
dc.description.bibref | Includes bibliographical references. | eng |
dc.format.extent | xiv, 153 pages | eng |
dc.identifier.oclc | 872560180 | eng |
dc.identifier.uri | https://doi.org/10.32469/10355/14397 | eng |
dc.identifier.uri | https://hdl.handle.net/10355/14397 | |
dc.language | English | eng |
dc.publisher | University of Missouri--Columbia | eng |
dc.relation.ispartofcommunity | University of Missouri--Columbia. Graduate School. Theses and Dissertations | eng |
dc.rights | OpenAccess. | eng |
dc.rights.license | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License. | |
dc.source | Submitted by University of Missouri--Columbia Graduate School. | eng |
dc.subject | compressive strength | eng |
dc.subject | bio-based polyol | eng |
dc.subject | polyurethane foam | eng |
dc.subject | water-blown polyurethane | eng |
dc.title | Polyurethane foams made from bio-based polyols | eng |
dc.type | Thesis | eng |
thesis.degree.discipline | Biological engineering (MU) | eng |
thesis.degree.grantor | University of Missouri--Columbia | eng |
thesis.degree.level | Doctoral | eng |
thesis.degree.name | Ph. D. | eng |