Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13240
Title: Effect of different ions present in fresh water on performance of polyvinylamine based ASA emulsion
Authors: Kumar A.
Bhardwaj N.K.
Singh S.P.
Published in: Journal of Dispersion Science and Technology
Abstract: Alkenyl succinic anhydride (ASA) is an alkaline sizing chemical used during papermaking. ASA emulsified in conventionally used cationic starch (CS) solution, has low shelf life i.e. 20–25 minutes and forms stickies/deposits as a result of hydrolyzed ASA on paper machine wire. Anionic polyvinylamine (APVAm) dilution in de-ionized water as a substitute to CS for ASA emulsification is a protective colloid, which seems to provide a protective shield to the ASA molecules, thereby reducing hydrolysis. In that case, the ASA emulsion was found to be stable up to four hours. In our knowledge no reliable studies have been done on study of different ions present in fresh water used for the preparation of APVAm stabilized ASA emulsion for commercial utilization. The present communication relates to the study on effect of different ions viz. Ca 2+ , Mg 2+ , Cl − , SO 4 2− & HCO 3− present in fresh water on the performance of ASA emulsion prepared by using APVAm as protective colloid. The permissible limit of each ion was measured. It was observed that the concentration of calcium ions was higher than the maximum permissible limit which may be responsible for the poor emululsification of ASA. The concentrations of Mg 2+ ions and other counter ions were less than that of the maximum allowable limit. It was also observed that chloride ions adversely affected while bicarbonate ions assisted the ASA emulsification. © 2019, © 2019 Taylor & Francis Group, LLC.
Citation: Journal of Dispersion Science and Technology (2019), (): -
URI: https://doi.org/10.1080/01932691.2019.1572513
http://repository.iitr.ac.in/handle/123456789/13240
Issue Date: 2019
Publisher: Taylor and Francis Inc.
Keywords: Alkaline sizing
alkenyl succinic anhydride
Cobb 60
different ions
polyvinylamine
ISSN: 1932691
Author Scopus IDs: 55628573312
55954738000
7407864677
Author Affiliations: Kumar, A., Department of Paper Technology, Indian Institute of Technology Roorkee–Saharanpur Campus, Saharanpur, India, Avantha Centre for Industrial Research & Development, Yamuna Nagar, India
Bhardwaj, N.K., Avantha Centre for Industrial Research & Development, Yamuna Nagar, India
Singh, S.P., Department of Paper Technology, Indian Institute of Technology Roorkee–Saharanpur Campus, Saharanpur, India
Corresponding Author: Bhardwaj, N.K.; Avantha Centre for Industrial Research & Development, Yamuna Nagar, India; email: bhardwaj@avantharesearch.org
Appears in Collections:Journal Publications [PT]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.