Thermo-vacuum treatment of poplar (Populus spp.) plywood

Author:

Zanuttini Roberto1,Castro Gaetano2,Cremonini Corrado1,Negro Francesco1,Palanti Sabrina3

Affiliation:

1. DISAFA, University of Torino, Largo Paolo Braccini 2, Grugliasco, TO 10095, Italy

2. CREA-Research Centre for Forestry and Wood, Strada Frassineto 35, Casale Monferrato, AL 15033, Italy

3. CNR IBE Institute for Bioeconomy, Via Madonna del Piano 10, Sesto Fiorentino, FI 50019, Italy

Abstract

AbstractPoplar cultivation is enduring a long-lasting crisis in Italy, but it is still playing a relevant role in the Italian and European wood sectors. To improve its prospects, the manufacturers of poplar plywood have recently activated various strategies to make it a distinguished panel with specific performances. In this frame, thermo-treatment could open new applications and markets. The present study investigates the physico-mechanical properties of thermo-treated poplar plywood. For this purpose, panels were manufactured with urea-melamine-formaldehyde adhesive, both in a standard mixture and added with resorcinol. They were then treated by the Termovuoto® process at 170, 190 and 210°C for 2 h. Changes in density, bonding quality, bending strength, modulus of elasticity, color and durability related to the aforementioned temperatures were investigated. Overall, the bonding quality of treated panels complied with the requirements of EN 314-1 and 2; bending strength and modulus of elasticity decreased, color darkened and durability increased. The latter is particularly important, because poplar wood is not durable and this process makes it suitable for use in humid conditions, offering new prospects for poplar plywood applications.

Publisher

Walter de Gruyter GmbH

Subject

Biomaterials

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3