Oxidative Degradation of Polyethylene Filled with Nanosized Crushed Shells of Sea Oysters

Abstract:

The work is devoted to the study of the effect of marine calcium carbonate on the polymer matrix. The composite flat strips based on low-density polyethylene filled by crushed shells of sea oysters, which are the main source of sea calcium, were investigated. Marine calcium carbonate masterbatch was used to reduce the cost and stiffen the resulting composite materials. The effect of the masterbatch concentration on mechanical properties and oxidative degradation were studied. The materials were exposed to three climatic factors (temperature, UV-radiation and moisture). The addition of crushed shells led to embrittlement of the test materials. According to FTIR analysis, the absorption band at 1432 cm^-1 attributed to carbonate minerals decreased or completely disappeared after weathering test due to washing out of CaCO₃ from the composite.

• Periodical: Key Engineering Materials (Volume 887)
• Pages: 123-128
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.887.123
• Online since: May 2021
• Authors: Z. Akhmetshina*, Elena E. Mastalygina, P. Pantyukhov
• Keywords: Calcium Carbonate Masterbatch, Mechanical Properties, Oxidative Degradation, Polyethylene, Polymer Composite, Sea Oyster’s Shells

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