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Title: Kenaf Bast Fibers—Part I: Hermetical Alkali Digestion

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.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1]
  1. Forest Products Department (FPD), Mississippi State University (MSU), Box 9820, Starkville, MS 39762-9601, USA
  2. Center for Advanced Vehicular Systems (CAVS), Box 5405, Starkville, MS 39762-5405, USA
Publication Date:
OSTI Identifier:
1198315
Grant/Contract Number:
# 362000-060803
Type:
Published Article
Journal Name:
International Journal of Polymer Sciences (Print)
Additional Journal Information:
Journal Name: International Journal of Polymer Sciences (Print); Journal Volume: 2011; Related Information: CHORUS Timestamp: 2016-08-04 08:44:48; Journal ID: ISSN 1687-9422
Publisher:
Hindawi Publishing Corporation
Sponsoring Org:
USDOE
Country of Publication:
Egypt
Language:
English