INFLUENCE OF THE PRE-TREATMENTS ON THE PROPERTIES OF BIODEGRADABLE FILMS FROM BOVINE HAIR

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Joana Costa (Autor) Outra; P. R. Pitrez (Autor) FEUP; C. Rocha (Autor) FEUP; O.M. Freitas (Autor) Outra; A. Crispim (Autor) Outra; C. Delerue-Matos (Autor) Outra; M. P. Gonçalves (Autor) FEUP

Revista

Título: Fresenius Environmental Bulletin

Vol. 21

Páginas: 2472-2476

ISSN: 1018-4619

Editora: Technische Universitat Munchen

Indexação

ISI Web of Knowledge - 0 Citações

ISI Web of Science

Scopus - 0 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-002-F63

Abstract (EN): The replacement of conventional synthetic films and coatings by biodegradable alternatives reduces the use of non-renewable resources and waste disposal problems. Considering that Portugal is a major producer of leather, and consequently a large producer of related wastes, in this research, bovine hair was tested for the production of biodegradable films directly by thermo-compression, allowing waste valorisation and reduction of environmental pollution. The aim of this study was to determine the influence of the different pre-treatments performed by two processes (removal by mechanical action and removal by chemical process), applied to bovine hair, in order to obtain a biodegradable film with appropriate properties. Mechanical properties for these films were evaluated, namely strain at break, stress at break and Young modulus. Additionally colour, solubility and swelling in water were also studied. The mechanical removal hair only produced films with Na2S treatment. Chemical removed hair (immunization) depends of the pre-treatment and the degreasing with petroleum ether or sodium sulphide pre-treatment leads better mechanical properties. The results obtained indicated that the pre-treatments have an important role in the final properties of biodegradable films.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5