Kenaf Bast Fibers—Part I: Hermetical Alkali Digestion

Shi, Jinshu; Shi, Sheldon Q.; Barnes, H. Michael; Horstemeyer, Mark; Wang, Jinwu; Hassan, El-Barbary M.

doi:10.1155/2011/212047

Kenaf Bast Fibers—Part I: Hermetical Alkali Digestion

Journal Article · Sat Jan 01 00:00:00 EST 2011 · International Journal of Polymer Sciences (Print)

DOI:https://doi.org/10.1155/2011/212047· OSTI ID:1198315

Shi, Jinshu ^[1]; Shi, Sheldon Q. ^[1]; Barnes, H. Michael ^[1]; Horstemeyer, Mark ^[2]; Wang, Jinwu ^[1]; Hassan, El-Barbary M. ^[1]

Forest Products Department (FPD), Mississippi State University (MSU), Box 9820, Starkville, MS 39762-9601, USA
Center for Advanced Vehicular Systems (CAVS), Box 5405, Starkville, MS 39762-5405, USA

The objective of this study was to develop a hermetical alkali digestion process to obtain single cellulosic fibers from kenaf bast. Kenaf bast were hermetically digested into single fiber using a 5% sodium hydroxide solution for one hour at four different temperatures (80 ^° C, 110 ^° C, 130 ^° C, and 160 ^° C). The hermetical digestion process used in this study produced fibers with high cellulose content (84.2–92.3%) due to the removal of lignin and hemicelluloses. The surface hardness and elastic modulus of the fibers digested at 130 ^° C and 160 ^° C were improved significantly compared with those digested at 80 ^° C. The tensile modulus and tensile strength of the individual fibers reduced as the digestion temperature increased from 110 ^° C to 160 ^° C. Micropores were generated in fiber cell wall when the fibers were digested at 130 ^° C and 160 ^° C. The studies on the composites that were made from polypropylene reinforced with the digested fibers indicated that the compatibility between the digested fibers and polypropylene matrix was poor.

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Sponsoring Organization:: USDOE

OSTI ID:: 1198315

Journal Information:: International Journal of Polymer Sciences (Print), Journal Name: International Journal of Polymer Sciences (Print) Vol. 2011; ISSN 1687-9422

Publisher:: Hindawi Publishing CorporationCopyright Statement

Country of Publication:: Egypt

Language:: English

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