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СУЧАСНЕ УЯВЛЕННЯ ПРО ПЕРЕБІГ ПРОЦЕСІВ ДЕСТРУКЦІЇ ПОЛІЕТИЛЕНТЕРЕФТАЛАТУ
Summary
This Ukrainian review summarizes current understanding of PET (polyethylene terephthalate) degradation mechanisms, including hydrolysis, thermal, photodegradation, and mechanical breakdown. Understanding how PET degrades is important because it is one of the most abundant plastics that fragments into microplastics in the environment.
У даній роботі, наведена інформація щодо сучасних уявлень про перебіг процесів деструкції поліетилентерефталату. Представлено загальні уявлення про механізми гідролітичної, термічної, термоокислювальної, термомеханічної та фотодеструкції поліетилентерефталату. Аналізуючи достатньо широкий ряд джерел літератури, встановлено, що деструкція поліетилентерефталату під впливом вологи, температури та навантажень зсуву, відбувається за декількома механізмами та має автокаталітичний характер. В ході гідролітичної деструкції поліетилентерефталату утворюються його полімерні та/або олігомерні похідні з гідроксильними, карбоксильними та вінілестерними групами, етилен, ацетальдегіди і циклічні сполуки.
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