Treatments of southern pine with vinyl chloride and methyl methacrylate for radiation-produced wood-plastic combinations |
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| Authors: | R L Calleton E T Choong R C McIlhenny |
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| Institution: | (1) International Paper Company, Tuxedo Park, New York, N.Y.;(2) School for Forestry, Louisiana State University, Baton Rouge, Louisiana, La., USA;(3) School of Forestry, Louisiana State University Baton Rouge, Louisiana, La., USA;(4) Nuclear Science Center, Louisiana State University Baton Rouge, Louisiana, La., USA |
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| Abstract: | Summary A method was developed for the impregnation of liquid vinyl chloride monomer into wood. Wood-plastic combinations (WPC) prepared from polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), and polyvinyl chloride plasticized with diocylthalate (DOP+PVC) were found to offer improvements in selected physical properties of wood. The initial anti-swell efficiency (ASE) values of PMMA WPC and DOP+PVC WPC are very high, averaging approximately 87 and 82 percent respectively after 5 hours of soaking; whereas PVC WPC attained an average of only 53 percent. After prolonged soaking, the ASE values of all treated wood decreased considerably, indicating no permanent stability was achieved. In hardness, the PMMA WPC attained an average springwood-summerwood rating of 76, the DOP+PVC WPC and the PVC WPC a rating of 69 and 63, respectively; whereas the untreated wood achieved a rating of only 53.The authors gratefully acknowledge Dr.Oskar Klopfer of Ethyl Corp, Baton Rouge, La. for technical assistance. |
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