Plastics are a wide range of synthetic or semisynthetic materials composed primarily of polymers. Their defining characteristic, plasticity, allows them to be molded, extruded, or pressed into a …

Sep 11, 2025 · plastic, polymeric material that has the capability of being molded or shaped, usually by the application of heat and pressure.

The meaning of PLASTIC is a plastic substance; specifically : any of numerous organic synthetic or processed materials that are mostly thermoplastic or thermosetting polymers of high …

Jun 7, 2019 · Plastic pollution has become one of the most pressing environmental issues, thanks to the overwhelming rise in production of disposable plastic products. Plastic pollution is most …

Plastic is a word that originally meant “pliable and easily shaped.” It only recently became a name for a category of materials called polymers. The word polymer means “of many parts,” and …

Explore the 7 main types of plastic, their properties, and environmental impact. Learn how plastic classification helps recycling and sustainable decisions.

2 days ago · This page describes the generation, recycling, combustion with energy recovery, and landfilling of plastic materials, and explains how EPA classifies such material.

In this article, we'll examine the chemistry of plastic, how it's made, how it's used, and how it's disposed of and recycled. We'll also look at some new biologically based plastics and their role …

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Oct 1, 2025 · Plastic is a polymeric material —that is, a material whose molecules are very large, often resembling long chains made up of a seemingly endless series of interconnected links.