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Journal of Materials Science Research and Reviews, .,Vol.: 2, Issue.: 4

Original-research-article

Extraction and Characterization of Bast Fibres from Roselle (Hibiscus sabdariffa) Stem for Industrial Application

 

E. U. Akubueze1*, C. S. Ezeanyanaso1, O. S. Muniru1, F. C. Nwaeche1, M. I. Tumbi1, C. C. Igwe1 and G. N. Elemo1

1Department of Chemical, Fibre and Environmental Technology, Federal Institute of Industrial Research Oshodi, P.M.B. 21023, Ikeja, Lagos, Nigeria.

Article Information

Editor(s):

(1) Dr. Yang Qu, Associate Professor, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, China.

Reviewers:

(1) Carlo Santulli, Università di Camerino, Italy.

(2) Tabe Franklin Nyenty, University of Ngaoundere, Cameroon.

(3) M. K. Gupta, Motilal Nehru National Institute of Technology, India.

Complete Peer review History: http://www.sdiarticle3.com/review-history/45087

Abstracts

Fibers extracted from Roselle (Hibiscus sabdariffa) stem were investigated as starting raw materials for textile industries, bio-packaging material, pulp and paper products, particle boards and composite material applications. Two extraction methods for obtaining bast fibres from Hibiscus sabdariffa stem such as Bacterial retting (BR) method and chemical retting (CR) method were studied. The Physico-chemical and mechanical properties of Bacterial retted (BR) and chemically retted (CR) Roselle (Hibiscus sabdariffa) fibre was Light brown in colour, with 16.07-20.2 Diameter(μm), 2.10-2.8 Fibre length (mm), 9.54-11.00% Moisture, 0.93-2.50% Ash, 55.55-60.40% Cellulose, 33.70-27.04% Hemicellulose, 10.50-11.40% Lignin, 145.60-177.55 MPa Strength, 20.70-24.90 GPa Modulus, 0.5-0.7% Elongation at break for bacterial retting (BR) method while chemical retting (CR) method was Dark brown in colour, 16.07-20.2 Diameter(μm), 2.10-2.8 Fibre length(mm) 12.90-14.50% Moisture, 1.00-2.70% Ash, 48.56-56.62% Cellulose, 38.07-31.85% Hemicellulose, 12.50-11.64% Lignin, 135.15-159.05MPa strength, 19.85-23.70GPa, 0.4-0.6% Elongation at break. The results showed that fibres produced by bacterial retting (BR) has better quality than chemical retting (CR) in terms of mechanical properties and flexibility, but the time involved in bacterial retting (BR) was too long to be considered for today’s industrial process integration, thus making it less attractive. More advancement in biotechnology with combined enzymatic and chemically retting will give shorter time with high quality fibres. In general, bast fibres from Roselle (Hibiscus sabdariffa) stem is also a unique natural fiber in the class of jute and kenaf. R&D into large scale production and industrial utilization of indigenous bast fibres will no doubt aid the revival and future development of Nigerian textile and allied industries.

Keywords :

Roselle (Hibiscus sabdariffa) stem; bast fibres; mechanical properties; chemical properties; bacterial and chemical retting.

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