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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13177
Title: Cationic starch and polyacrylamides for alkenyl succinic anhydride (ASA) emulsification for sizing of cellulosic fibers
Authors: Ashish K.
Bhardwaj N.K.
Singh S.P.
Published in: Cellulose
Abstract: Abstract: Paper is composed of polysaccharides mainly cellulose and carbohydrates. The hydroxyl groups present in cellulose react with various substances added to fibrous slurry. Treating the cellulosic fibers chemically, which tends to develop the resistance to aqueous liquid absorption, is known as internal sizing of paper. The main internal alkaline sizing chemicals are alkyl ketene dimer and alkenyl succinic anhydride (ASA). In situ emulsification of ASA using cationic starch (CS) is conventionally practiced because of the low shelf life of ASA emulsion. In the present communication polyacrylamides (PAMs) have been used as an alternative chemical to cationic starch at very low dosages than cationic starch and varying ratios of ASA to polyacrylamides to stabilize the ASA droplets. The colloidal stability of ASA emulsions was measured in terms of particle size distribution, sizing performance, pH and percent hydrolysis of ASA with the passage of time. The ASA emulsions prepared with PAMs at very low dosage were observed with superior colloidal stability and sizing behaviour than the CS stabilized emulsion. Graphic abstract: [Figure not available: see fulltext.]. © 2019, Springer Nature B.V.
Citation: Cellulose (2019), 26(18): 9901-9915
URI: https://doi.org/10.1007/s10570-019-02758-6
http://repository.iitr.ac.in/handle/123456789/13177
Issue Date: 2019
Publisher: Springer Netherlands
Keywords: Alkaline sizing
Alkenyl succinic anhydride
Cationic starch
Cobb60
Contact angle
Polyacrylamides
ISSN: 9690239
Author Scopus IDs: 56764235100
55954738000
7407864677
Author Affiliations: Ashish, K., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247 001, India, Avantha Centre for Industrial Research & Development, Yamuna Nagar, 135 001, India
Bhardwaj, N.K., Avantha Centre for Industrial Research & Development, Yamuna Nagar, 135 001, India
Singh, S.P., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247 001, India
Funding Details: One of the pleasant aspects of preparing this manuscript is the opportunity to thank those who have contributed directly or indirectly to accomplish this study. First of all the authors are extremely thankful to Director, Avantha Centre for Industrial R&D (ACIRD), Yamuna Nagar (Haryana) for permitting to carry out the study in ACIRD. First author would like to appreciate the support of Mr. Vipul Gupta and Ms. Daljeet Kaur for their help in understanding the FTIR spectrum and to help in manuscript upgradation.
Corresponding Author: Bhardwaj, N.K.; Avantha Centre for Industrial Research & DevelopmentIndia; email: bhardwaj@avantharesearch.org
Appears in Collections:Journal Publications [PT]

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