efeito da hidrólise ácida dos taninos de eucalyptus grandis w. hill ex maiden nas propriedades dos adesivos tânicos effect of the acid hydrolyses of eucalyptus grandis w. hill ex maiden tannins in the properties of the tannic adhesives

Clicks: 258
ID: 174786
2009
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Steady

Ranked #25 of 98 articles by views in journal of veterinary medical research

Most read Least read

Bar heights use a square-root scale.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Este trabalho teve como objetivo avaliar o efeito da hidrólise ácida sobre as propriedades e resistência ao cisalhamento dos adesivos de taninos, extraídos a partir da casca de Eucalyptus grandis W. Hill ex Maiden. Os adesivos foram sintetizados com taninos hidrolisados, empregando-se quatro valores de pH, três tempos de reação e 10% de formaldeído em relação à massa seca de taninos. Foram produzidas 96 juntas coladas, constituídas de duas lâminas de madeira de Eucalyptus grandis. As resistências ao cisalhamento e falha na madeira foram determinadas de acordo com a norma ASTM D 2339-93. Concluiu-se que a hidrólise ácida dos taninos reduziu a viscosidade dos adesivos e aumentou a resistência ao cisalhamento na linha de cola. De modo geral, as juntas coladas apresentaram baixo percentual de falha na madeira.
The objective of this research was to evaluate the effect of the acid hydrolysis of Eucalyptus grandis W. Hill ex Maiden bark tannins on the properties of tannic adhesives. Adhesives were synthesized with tannins hydrolyzed at four pH values, three reaction times and 10% of formaldehyde based on the tannin dry weight. Ninety-six glued joints were prepared with Eucalyptus grandis thin boards. Shear resistance and wood failure percentage were determined according to the ASTM D 2339-93 standards. It was concluded that tannin hydrolysis decreased adhesive viscosity and increased the glue line shear resistance. However, it was observed a low percentage of wood failure.
Reference Key
carneiro2009revistaefeito Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Angélica de Cássia Oliveira Carneiro;Benedito Rocha Vital;Pedro Gustavo Ulisses Frederico;Rosimeire Cavalcante dos Santos;Wagner Patrício de Sousa Júnior
Journal journal of veterinary medical research
Year 2009
DOI
10.1590/S0100-67622009000400016
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622009000400016
Keywords
tannins bark

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.