<?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%">Yona, Arnaud Maxime Cheumani</style></author><author><style face="normal" font="default" size="100%">Budija, Franc</style></author><author><style face="normal" font="default" size="100%">Kričej, Borut</style></author><author><style face="normal" font="default" size="100%">Kutnar, Andreja</style></author><author><style face="normal" font="default" size="100%">Pavlič, Matjaž</style></author><author><style face="normal" font="default" size="100%">Pori, Pavel</style></author><author><style face="normal" font="default" size="100%">Tavzes, Črtomir</style></author><author><style face="normal" font="default" size="100%">Petrič, Marko</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Production of biomaterials from cork: Liquefaction in polyhydric alcohols at moderate temperatures</style></title><secondary-title><style face="normal" font="default" size="100%">Industrial Crops and Products</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">Glycerol</style></keyword><keyword><style  face="normal" font="default" size="100%">Liquefaction</style></keyword><keyword><style  face="normal" font="default" size="100%">Polyethylene glycol</style></keyword><keyword><style  face="normal" font="default" size="100%">suberin</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><volume><style face="normal" font="default" size="100%">54</style></volume><pages><style face="normal" font="default" size="100%">296-301</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The aim of this study was to develop polymers in a liquid solution, from renewable bio-resources, usable as intermediate materials in the preparation of plastics, adhesives or coatings. The liquefaction of cork with glycerol was investigated at 150◦C, 180◦C, and 200◦C under acidic (sulphuric acid) or alkaline conditions (sodium hydroxide). Cork appears as a two-component material, containing suberin and lig- nocelluloses. In the presence of sulphuric acid, only the liquefaction of the lignocellulosic components was achieved, leading to liquefaction yield of less than 47% at all investigated conditions. The inverse phenomenon was observed with sodium hydroxide. Suberin was almost completely liquefied, but an increase of temperature and/or sodium hydroxide content was necessary to improve the liquefaction of lignocelluloses. Addition of polyethylene glycol to glycerol to a certain extent caused the conversion of suberin under acid conditions leading to liquefaction yield up to 93%. Therefore, it was demonstrated that it is possible to use cork dust, a less valuable by-product, for the production of various basic chemicals and/or polymers with a high added value</style></abstract></record></records></xml>