caa a22 4500 445384387 CHVBK 20180317143027.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10924-010-0249-1 doi (NATIONALLICENCE)springer-10.1007/s10924-010-0249-1 Chemical Recycling of Polyamide Waste at Various Temperatures and Pressures Using High Pressure Autoclave Technique [Elektronische Daten] [A. Nemade, S. Mishra, V. Zope] Chemical recycling of polyamide waste in water was studied using 0.5L high pressure autoclave at temperatures of 150, 200, 210, 220,230 and 240°C and at various pressures of 100, 200, 300, 400, 500, 600 and 700 psi (pound per square inch). Viscosity average molecular weight of the polyamide waste sample was determined by Ostwald method and recorded as 1.928×103. The reaction was found to be first order with velocity constant in order of 10−2min−1. The velocity constant and percent conversion of depolymerization reaction at 240°C and 700 psi pressure were recorded as 2.936×10−2 min−1 and 99.99% respectively. The velocity constant was obtained on the basis of measurement of amine value. Kinetic and thermodynamic parameters such as energy of activation, frequency factor, enthalpy of activation were found to be 10.6kJmole−1, 0.3719min−1 and 6.3kJmole−1 respectively, at the optimum conditions for maximum depolymerization of polyamide waste. Springer Science+Business Media, LLC, 2010 Depolymerization nationallicence Kinetics nationallicence Energy of activation nationallicence Polyamide nationallicence Enthalpy of activation nationallicence Nemade A. Department of Chemical Technology, North Maharashtra University, 425001, Jalgaon, Maharashtra, India aut Mishra S. Department of Chemical Technology, North Maharashtra University, 425001, Jalgaon, Maharashtra, India aut Zope V. Department of Chemistry, M. J. College, 425002, Jalgaon, Maharashtra, India aut Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/1(2011-03-01), 110-114 1566-2543 19:1<110 2011 19 10924 https://doi.org/10.1007/s10924-010-0249-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10924-010-0249-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nemade A. Department of Chemical Technology, North Maharashtra University, 425001, Jalgaon, Maharashtra, India aut NATIONALLICENCE 700 1- Mishra S. Department of Chemical Technology, North Maharashtra University, 425001, Jalgaon, Maharashtra, India aut NATIONALLICENCE 700 1- Zope V. Department of Chemistry, M. J. College, 425002, Jalgaon, Maharashtra, India aut NATIONALLICENCE 773 0- Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/1(2011-03-01), 110-114 1566-2543 19:1<110 2011 19 10924 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer