Characterization of microfiber isolated from Hibiscus sabdariffa var. altissima fiber by steam explosion. Issue 2 (1st February 2020)

• Record Type: Journal Article
• Authors: Karakoti, Abhilash; Biswas, Sunanda; Aseer, J. Ronald; Sindhu, Nidhi; Sanjay, M.R.
• Is Part Of: Journal of natural fibers. Volume 17:Issue 2(2020)
• Page Start: 189
• Page End: 198
• Publication Date: 2020-02-01
• Subjects: Cellulose -- steam explosion -- composites -- Hibiscus sabdariffa fiber -- crystallinity -- microfibers; 纤维素 -- 蒸汽爆炸 -- 复合材料 -- 木槿纤维 -- 结晶性 -- 超细纤维; Textile research -- Periodicals; Textile research; Periodicals; 677.005
• DOI: 10.1080/15440478.2018.1477085
• Languages: English
• ISSNs: 1544-0478

Abstract

ABSTRACT: In this work, the analytical and experimental study on isolation of microfibers from Hibiscus sabdariffa var. altissima fiber using the steam explosion technique is discussed. Structural and thermal analysis of fiber is done by thermogravimetric analysis (TGA), X-ray diffraction (XRD), and Fourier transform infrared (FT-IR) spectroscopy. Scanning electron microscope image confirmed that the diameter of the fiber is reduced to approximately 5 µm and defibrillation of the fiber after bleaching process is also observed. XRD analysis of H. sabdariffa fiber at raw and acid hydrolyses stage demonstrated that the crystallinity index is increased from 77.8% to 86.7%. FT-IR results indicated the devaluation of lignin and hemicellulose after the chemical treatment and enhancement of thermal stability can also be seen by TGA results.