Study of the effects of acetylation treatments on sisal fiber

Revista Brasileira de Engenharia Agrícola e Ambiental

Silva, Valneide R. da¹  Lopes, Fernanda F. M.³  Gadelha, Tatiana S.¹  Araújo, Gilmar T. de²  Nascimento, José W. B. do¹ 

[1] UFCG;UAEQ/UFCG;UFCG, Campina Grande

关键词: Agave sisalana;    treatment of fibers;    hydrophilicity    INTRODUÇÃO O uso de fibras vegetais na produção de compósitos tem-se destacado no que se refere a materiais alternativos aplicados para construção de pequenas estruturas;   

DOI  :  10.1590/S1415-43662010000700015

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The use of vegetable fibers in composites is highly viable regarding about the use of materials from renewable sources, the biodegradability and the socioeconomic advantages in the production of raw vegetable. The sisal fibers are highly hygroscopic and this is a main problem in the production of composites, inducing dimensional changes under moisture influence, deposition of the matrix products and degradation. The treatment of the acetylation was applied at different temperatures and reaction times, and the efficiency of treatments, considering the reduction of the hydrophilicity and maintenance of the mechanical properties, was evaluated by water sorption, mechanical properties and the infrared spectroscopy. With acetylation the fibers had weight reductions for water sorption up to 50% compared to untreated. The treatments for 3 h decreased the mechanical properties while the 120 °C for 1 h showed better physico-mechanical properties and increase of apolar groups.

【 授权许可】

CC BY-NC