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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13376
Title: Studies on Ipomea carnea and Cannabis sativa as an alternative pulp blend for softwood: An optimization of kraft delignification process
Authors: Dutt D.
Upadhyaya J.S.
Tyagi C.H.
Kumar A.
Lal M.
Published in: Industrial Crops and Products
Abstract: Ipomea carnea Jacq, a common weed known as 'Beshram' was introduced in India, as an ornamental plant. Surprisingly, except fiber length, other morphological characteristics like, cell wall thickness, lumen diameter, flexibility coefficient and wall fraction of I. carnea resemble with softwoods like, Pinus kesiya, and Picca abies. Cannabis sativa L., a common weed known as soft hemp consists of both bast fiber as well as core fiber. The unique morphological characteristics of I. carnea like, cell wall thickness and flexibility coefficient, which resembles with softwoods along with long fibers of C. sativa, in which I. carnea deficits in a proper blend ratio, can be used in a better way for the development of high quality value added paper. The optimum kraft cooking conditions for I. carnea and C. sativa were: active alkali 16%, sulfidity 20%, temperature 165 °C, time (at temperature) 120 min and wood to liquor ratio of 1:4 for I. carnea and 1:3.5 for C. sativa. The screened pulp yield of I. carnea and C. sativa were found to be 49.3 and 54.3% at Kappa number of 29, respectively. An anthraquinone (AQ) dose of 0.1% increases the pulp yield to the tune of around 0.6% as well reduce the Kappa number to the tune of 22%. CEHH bleaching of C. sativa produces pulp brightness of 82% (Elrepho) at total chlorine demand of 5.07%. On contrary to this the I. carnea kraft pulp at same chlorine demand produce a pulp with improved brightness of 85.4% (Elrepho). © 2008 Elsevier B.V. All rights reserved.
Citation: Industrial Crops and Products (2008), 28(2): 128-136
URI: https://doi.org/10.1016/j.indcrop.2008.02.001
http://repository.iitr.ac.in/handle/123456789/13376
Issue Date: 2008
Keywords: Cannabis sativa
Ipomea carnea
Kappa number
Kraft pulping
Mechanical strength properties
Morphology and chemical analysis
ISSN: 9266690
Author Scopus IDs: 7005982560
8679068400
6602705260
55574186070
8626233500
Author Affiliations: Dutt, D., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247001, India
Upadhyaya, J.S., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247001, India
Tyagi, C.H., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247001, India
Kumar, A., Ballarpur Industries Ltd., Unit-Shri Gopal, Yamuna Nagar, India
Lal, M., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247001, India
Corresponding Author: Dutt, D.; Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247001, India; email: dharm_dutt@rediffmail.com
Appears in Collections:Journal Publications [PT]

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