Mechanical properties and long-term durability of recycled polysulfone plastic. (1st February 2019)

• Record Type: Journal Article
• Authors: Yu, Lichao; Zhao, Defang; Wang, Wei
• Is Part Of: Waste management. Volume 84(2019)
• Page Start: 402
• Page End: 412
• Publication Date: 2019-02-01
• Subjects: Polysulfones -- Wasted nonwovens -- Recycled plastic -- Long-term durability -- Mechanical properties -- Thermal stability; Hazardous wastes -- Periodicals; Refuse and refuse disposal -- Periodicals; 363.728
• DOI: 10.1016/j.wasman.2018.11.025
• Languages: English
• ISSNs: 0956-053X

Abstract

Highlights: The best way to deal with waste PSU is to recycle it because of its non-biodegradability. The recycling of PSU has a good energy saving and environmental protection significance. The mechanical properties of recycled PSU are investigated. The long-term durability is studied base on time-temperature superposition by DMA. The thermal stability is evaluated by activation energy by using a TGA. Abstract: In view of the recycling of PSU plastics has a good energy saving and environmental protection significance. This paper is concerned with the mechanical properties, and long-term durability of virgin and recycled polysulfone plastics (PSU) collected from wasted PSU nonwovens, the mechanical experiment of tensile test and Izod impact test are carried out to investigate the effect of cycle processing on the performance of PSU. The long-term durability of virgin and recycled PSU is studied base on time-temperature superposition by using a dynamic mechanical analysis (DMA). The thermal stability is evaluated by pyrolytic activation energy calculated by Iso-conversional kinetics method using a Thermogravimetric analysis (TGA). The results show that the recycled PSU exhibits the similar tensile property while lower impact strength than virgin PSU. The long-term durability and thermal stability of virgin PSU are better than recycled PSU and decreased with increasing the times of cycle processing, which is attributed to the mixing of impurities and degradation of the molecular structure in the recycling process.