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} </script> <script src="//translate.google.com/translate_a/element.js?cb=googleTranslateElementInit"></script> </ul> </div> </nav> <div class="container-fluid bg-grey"> <div class="container pt-3 pb-4"> <div class="white-container mt-4"> <h2 class="bg-hdr">Wood-Plastic Composites</h2> <p style="text-align: center; line-height: normal; margin: 0in 0in 0pt; unicode-bidi: embed; direction: ltr;"><strong><span>Performance and properties of wood/polypropylene panels as affected by wood aqueous extraction</span></strong><strong><span> </span></strong></p> <p style="text-align: center; margin: 6pt 0in; unicode-bidi: embed; direction: ltr;"><strong><span><span style="font-size: small;">Ibrahim Aref<sup>1</sup>; Hamad Al-Mefarrej<sup>1</sup> Ramadan Nasser<sup>1,2</sup></span></span></strong></p> <p style="text-align: center; margin: 6pt 0in; unicode-bidi: embed; direction: ltr;"><strong><span><span style="font-size: small;">Corresponding author: </span><span style="font-size: small;">nasser67@ksu.edu.sa</span><span style="font-size: small;"> (Ramadan Nasser) </span></span></strong></p> <p style="text-align: justify; line-height: normal; margin: 0in 0in 0pt; unicode-bidi: embed; direction: ltr;"><strong><span>1 Plant Production Department, College of Food and Agriculture Sciences, King Saud University, Saudi Arabia</span></strong></p> <p style="text-align: justify; line-height: normal; margin: 0in 0in 0pt; unicode-bidi: embed; direction: ltr;"><strong><span>2 Forestry and Wood Technology Department, Faculty of Agriculture (Al-Shatby), Alexandria University, Egypt </span></strong></p> <p style="text-align: center; line-height: normal; margin: 0in 0in 0pt; unicode-bidi: embed; direction: ltr;"><strong><span>ABSTRACT</span></strong></p> <p style="text-align: justify; line-height: normal; text-indent: 0.5in; margin: 0in 0in 0pt; unicode-bidi: embed; direction: ltr;"><span>The manufacturing of wood/polymer composites (WPCs) by compounding wood particles with plastic at temperatures above their melting point may cause the thermal degradation of the wood, which can lead to undesirable properties, including odor, discoloration and a degradation of the mechanical properties of the panels.</span><span style="font-size: small;"><sup><span>1</span></sup><span> This study was conducted to investigate the effect of a particle pre-treatment (cold water soaking and hot water extraction) on the performance and properties of wood/PP composite panels made of four lignocellulosic materials and polypropylene, PP, (50/50 by weight). </span></span><span>Composites filled with pretreated and untreated particles of three wood species and date palm midrib fronds were manufactured </span><span>using a melt blending technique followed by compression molding</span><span>. The physical, mechanical and dimensional stability properties of the WPC panels were evaluated. </span><span>The interaction between the wood and the PP was characterized by FT-IR. </span><span>All the composites showed a similar spectrum, but a few additional peaks appeared relative to neat PP in five regions. The results indicated that the four species are significantly different in all chemical constituents. Pretreating the wood particles by either cold or hot water resulted in significant improvements in the compatibility of each wood species with PP, as observed by an increase in the mechanical properties and by a decrease the water uptake and thickness swelling of the composites. An e</span><span>nhancement in strand color, a decrease in smoke and excessive odor during the compounding process were also observed, which resulted in an enhancement in the performance of the panels produced, particularly for the date palm midrib fronds.</span></p> <p style="text-justify: kashida; text-align: justify; line-height: normal; text-kashida: 0%; margin: 0in 0in 0pt; unicode-bidi: embed; direction: ltr; mso-layout-grid-align: none;"><span> </span></p> <p style="text-justify: kashida; text-align: justify; line-height: normal; text-kashida: 0%; margin: 0in 0in 0pt; unicode-bidi: embed; direction: ltr; mso-layout-grid-align: none;"><strong><span>Keywords</span></strong></p> <p style="text-justify: kashida; text-align: justify; line-height: normal; text-kashida: 0%; margin: 0in 0in 0pt; unicode-bidi: embed; direction: ltr; mso-layout-grid-align: none;"><strong><em><span>Wood/polymer, compounding, wood, composites, pretreatments, FTIR, water uptake, thickness swelling.</span></em></strong><strong><em><span> <span style="mso-spacerun: yes;">  </span><span style="mso-spacerun: yes;"> </span></span></em></strong><strong><em></em></strong></p> <div class="border-top py-2"><b>Posted by: </b>Ramadan Abdel Sayed Nasser, Associate Prof, King Saud University, Saudi Arabia (<span class="f-sm">15-May-2012</span>)</div> </div> </div> </div> <div class="container_fluid"> <div class="bg-footer"> <div class="container py-4"> <div class="d-flex justify-content-center pt-4"> <div class="text-center f-sm"> <a href="/" title="Home page" class="text-grey me-2">Home</a><span class="me-1">|</span> <a href="/international-conferences/" title="Conferences" class="text-grey me-1">Conferences</a><span class="me-1">|</span> <a href="/international-exhibitions/" title="International Exhibition" class="text-grey me-2">Exhibitions</a><span class="me-1">|</span> <a href="/event-organizers/" title="Event Organizers" class="text-grey me-2">Organizers</a><span 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