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Physical characterization of enzymatically modified kraft pulp fibers

Journal of biotechnology, 1997-09, Vol.57 (1), p.205-216 [Peer Reviewed Journal]

1997 ;Wageningen University & Research ;ISSN: 0168-1656 ;EISSN: 1873-4863 ;DOI: 10.1016/S0168-1656(97)00100-4

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Title:
Physical characterization of enzymatically modified kraft pulp fibers
Author: Mansfield, Shawn D. ; Jong, Ed de ; Stephens, R.Scott ; Saddler, John N.
Subjects: Agrotechnological Research Institute ; Biotechnology ; Catalyst activity ; Cellulase ; cellulases ; Cellulose ; Crystal structure ; Crystallinity ; Degree of polymerization ; Douglas-fir ; Enzymes ; Fiber modification ; FT-IR spectroscopy ; Hydrolysis ; Instituut voor Agrotechnologisch Onderzoek ; Kraft pulp ; kraft pulping ; Morphology ; O-glycoside hydrolases ; Polymerization ; Pore volume ; Pseudotsuga menziesii ; Scanning electron microscopy ; Strength of materials ; wood pulp ; Xylanase
Is Part Of: Journal of biotechnology, 1997-09, Vol.57 (1), p.205-216
Description: Douglas-fir kraft pulps were treated with an enzyme preparation containing both cellulase and xylanase activities. Treatments resulted in the solubilization of 21.1% the xylan and 1.8% of the cellulose. Changes in fiber and paper properties were observed. Monitoring pore volume, degree of polymerization, crystallinity, FT-IR spectra, and scanning electron microscopy helped elucidate changes in fiber composition and morphology. Data indicate a decline in intrinsic fiber strength due to an erosion of the fiber surface. Reduction in paper strength resulted from the collective effects of decreased intrinsic fiber strength and the reduction in the degree of polymerization of a large portion of the hemicellulose component of the fibers, as well as fiber defibrillation and fines hydrolysis.
Publisher: Elsevier B.V
Language: English
Identifier: ISSN: 0168-1656
EISSN: 1873-4863
DOI: 10.1016/S0168-1656(97)00100-4
Source: Alma/SFX Local Collection

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Physical characterization of enzymatically modified kraft pulp fibers

1997 ;Wageningen University & Research ;ISSN: 0168-1656 ;EISSN: 1873-4863 ;DOI: 10.1016/S0168-1656(97)00100-4

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