<?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></dates><publisher><style face="normal" font="default" size="100%">BRILL ACADEMIC PUBLISHERS</style></publisher><pub-location><style face="normal" font="default" size="100%">PLANTIJNSTRAAT 2, P O BOX 9000, 2300 PA LEIDEN, NETHERLANDS</style></pub-location><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></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%">Pereira, H</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">THE EFFECT OF LONG-TERM TREATMENT AT 100-DEGREES-C-150-DEGREES-C ON STRUCTURE, CHEMICAL-COMPOSITION AND COMPRESSION BEHAVIOR OF CORK</style></title><secondary-title><style face="normal" font="default" size="100%">HOLZFORSCHUNG</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">c</style></keyword><keyword><style  face="normal" font="default" size="100%">Cellular materials</style></keyword><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">mechanical properties</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1994</style></year></dates><publisher><style face="normal" font="default" size="100%">WALTER DE GRUYTER &amp; CO</style></publisher><pub-location><style face="normal" font="default" size="100%">GENTHINER STRASSE 13, D-10785 BERLIN, GERMANY</style></pub-location><volume><style face="normal" font="default" size="100%">48</style></volume><pages><style face="normal" font="default" size="100%">226-232</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The effects of heating of cork in air at 100-degrees-C and 150-degrees-C&lt;br/&gt;for up to 42 days have been studied. Dimensional and mass changes&lt;br/&gt;induced by heat treatment were measured and the chemical composition was&lt;br/&gt;analysed. The thermal degradation of cork is small for short periods of&lt;br/&gt;treatment but increases with time and temperature. Cork looses after 42&lt;br/&gt;days of treatment 6.8 % of its mass at 100-degrees-C and 19.9 % at&lt;br/&gt;150-degrees-C. Cork extractives and polysaccharides were found to be the&lt;br/&gt;most temperature labile components. The cellular structure, observed by&lt;br/&gt;scanning electron microscopy, did not change with treatment in these&lt;br/&gt;conditions. Compression curves of untreated and heat treated cork&lt;br/&gt;samples were obtained, which show an increase of compression strength&lt;br/&gt;upon heating for short exposure periods and a decrease for longer ones.&lt;br/&gt;The changes observed in the compression behaviour of cork treated at&lt;br/&gt;100-degrees-C and 150-degrees-C were related to the chemical composition&lt;br/&gt;changes induced by heat treatment.</style></abstract></record></records></xml>