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Quality restoration of waste polyolefin plastic material through the dissolution-reprecipitation technique

Arkan Jasim, Hadi and Najmuldeen, Ghazi Faisal and Ahmed, Iqbal (2014) Quality restoration of waste polyolefin plastic material through the dissolution-reprecipitation technique. Chemical Industry and Chemical Engineering Quarterly, 20 (2). pp. 163-170. ISSN 1451-9372

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Abstract

This study examines the restoration of waste plastic polymers based on LDPE, HDPE or PP through dissolution/reprecipitation. Experimental conditions of the recycling process, including type of solvent/non-solvent, original polymer concentration and dissolution temperature were optimized. Results revealed that by using the different prepared solvents/non-solvents at various ratios and temperatures, the polymer recovery was always greater than 94%. The FTIR spectra and the thermal properties (melting point and crystallinity) of the polymers before and after recycling were measured using Differential Scanning Calorimetry (DSC). Mechanical properties of the waste polymer before and after recycling were also measured. Besides small occasional deviations, the properties did not change. The tensile strength at maximum load was 7.1, 18.8, and 7.4 MPa for the recycled LDPE, HDPE and PP, respectively and 7.78, 18.54 and 7.86 MPa for the virgin polymer. For the waste, the strength was 6.2, 15.58 and 6.76 MPa.

Item Type: Article
Additional Information: Indexed by Scopus, WOS
Uncontrolled Keywords: Polymer recycling; Waste polyolefins; Dissolution/reprecipitation
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 11 Feb 2020 02:11
Last Modified: 11 Feb 2020 02:11
URI: http://umpir.ump.edu.my/id/eprint/25432
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