<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Teixeira, M. J.</style></author><author><style face="normal" font="default" size="100%">Fernandes, A. C.</style></author><author><style face="normal" font="default" size="100%">Saramago, B.</style></author><author><style face="normal" font="default" size="100%">ROSA, M. E.</style></author><author><style face="normal" font="default" size="100%">BORDADO, J. C.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of the wetting properties of polymeric adhesives on the mechanical behaviour of cork agglomerates</style></title><secondary-title><style face="normal" font="default" size="100%">JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">adhesives</style></keyword><keyword><style  face="normal" font="default" size="100%">cork agglometares</style></keyword><keyword><style  face="normal" font="default" size="100%">mechanical properties</style></keyword><keyword><style  face="normal" font="default" size="100%">WETTING</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1996///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">10</style></volume><pages><style face="normal" font="default" size="100%">1111 - 1127</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A series of adhesives, polyurethane prepolymers with alkane chains of different functionalities, were used in the production of cork agglomerates. The polymeric structure varied from long, linear chains in adhesive M1 (14% isocyanate groups) to short, branched chains in adhesive M4 (30% isocyanate groups). The wetting properties of the adhesives were studied through surface tension and contact angle measurements of the polymeric liquids deposited on cork substrates. The mechanical behaviour of the cork agglomerates was studied through compression and three-point bending tests, and the agglomerate structure was analysed by scanning electron microscopy (SEM). The relationship between the structural and wetting characteristics of the adhesives and the mechanical properties of the agglomerates was investigated. The experimental results indicate that it is the work of adhesion for the adhesive/cork system, and not only the contact angle, which determines the mechanical resistance of the cork agglomerate.</style></abstract><issue><style face="normal" font="default" size="100%">11</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;pub-location: PLANTIJNSTRAAT 2, P O BOX 9000, 2300 PA LEIDEN, NETHERLANDS&lt;br/&gt;publisher: BRILL ACADEMIC PUBLISHERS</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">ROSA, M. E.</style></author><author><style face="normal" font="default" size="100%">FORTES, M. A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">WATER-ABSORPTION BY CORK</style></title><secondary-title><style face="normal" font="default" size="100%">WOOD AND FIBER SCIENCE</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">DIFFUSION COEFFICEIENTS</style></keyword><keyword><style  face="normal" font="default" size="100%">DIMENSIONAL CHANGE</style></keyword><keyword><style  face="normal" font="default" size="100%">WATER ABSORPTION</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1993///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">25</style></volume><pages><style face="normal" font="default" size="100%">339 - 348</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A study of liquid water absorption by cork was carried out in which the anisotropy of cork was taken into account. The changes with time of the mass, volume, and linear dimensions were measured for different orientations of the sections in cork exposed to liquid water at room temperature (20 C) and at 90-100 C. Two regimes of water absorption were identified, namely, a period involving dimensional change and a period with only mass change. Diffusion coefficients at both temperatures were estimated using a special technique. There is a small anisotropy with a faster diffusion in the radial direction. Diffusion coefficients at 90 C are two orders of magnitude larger than at room temperature. Water absorption in the cell walls causes the expansion of cork, which (for the boiled specimens tested) is slightly smaller in the radial direction. The volume increase is proportional to the mass increase and ceases after relatively short immersion times. At this stage, the cell walls are apparently saturated with water. Further immersion results in penetration of water into the cells. The kinetics of absorption is rather slow at long times, but eventually the cells become full of water, the density increases above that of water, and the cork sinks.</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;pub-location: ONE GIFFORD PINCHOT DR, MADISON, WI 53705 USA&lt;br/&gt;publisher: SOC WOOD SCI TECHNOL</style></notes></record></records></xml>