Accelerated weathering properties of compatibilized composites made from recycled HDPE and nonmetallic printed circuit board waste. Issue 11 (23rd November 2015)

• Record Type: Journal Article
• Authors: Muniyandi, Shantha Kumari; Sohaili, Johan; Hassan, Azman
• Is Part Of: Journal of applied polymer science. Volume 133:Issue 11(2016)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2015-11-23
• Subjects: compatibilization -- composites -- degradation -- mechanical properties; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.43110
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: The main aim of this work is to examine the influence of the contents of nonmetallic printed circuit board (PCB) waste component on the photodegradation of recycled high‐density polyethylene (rHDPE) composites. The properties tested were chemical changes, flexural properties, color stability, water absorption, leaching properties, and crystallinity changes of the composites after exposure to 2, 000 h of accelerated weathering. Surface degradation for composites with nonmetallic PCB was less compared to unfilled rHDPE mainly because glass fibers covered almost the whole surface of specimens, acting as a protective layer, thus, slowing down the photodegradation reaction. Incorporation of compatibilizer in rHDPE/PCB composites had played an important role in resisting degradation due to UV exposure. All the composite samples became lighter in the early stages of weathering exposure; however, compatibilized composites showed less lightening and reduction on strength and modulus. Carbonyl index increases with exposure time indicating that the oxidation reaction continuously occurred during the aging process. Incorporation of compatibilizer had successfully reduced the water absorption uptake by the composites and effectively delayed some degradation properties of weathering. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2016, 133, 43110. Abstract :