Abstract
Abstract The utilization of the solid tannery wastes as a promoting agent to improve paper sheet properties was investigated. Solid tannery wastes from pickled hide shavings are treated to remove acid and salts, and hydrolyzed at pH 10 by using potassium carbonate. The produced hydrolysable collagen (gelatin) was used as coating for paper sheets. The gelatin concentrations from 0.5–2.5 % were used as coating solution and its effect on thermal aging and mechanical properties was studied. A direct proportion between gelatin concentration and improvements of paper mechanical properties was observed. A kinetic study based on paper strength properties confirmed the stabilizating effect of gelatin on paper sheets. Paper sheets coated with 2.5 % gelatin solution were thermally aged at temperatures range between 100–200 °C for different time intervals from 1–6 h, and after that it was subjected to natural aging for two years. Gelatin coating improves the paper sheets mechanical properties and thermal stability.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
