Polyvinylidenchlorid

Polyvinylidenchlorid, often abbreviated as PVDC, is a polymer made from the monomer vinylidene chloride. It is known for its excellent barrier properties against moisture, gases, and chemicals. This makes it highly effective for packaging applications, particularly for food and pharmaceuticals, where it helps to extend shelf life by preventing spoilage. PVDC is also resistant to abrasion and corrosion. It is not typically used as a standalone material but is often co-extruded or laminated with other plastics like polyethylene or polypropylene to create multi-layer films. The production of PVDC involves the polymerization of vinylidene chloride, a process that can be carried out through various methods, including emulsion polymerization. While PVDC offers significant advantages in barrier performance, its environmental impact, particularly concerning its disposal and potential for microplastic formation, has led to research and development into alternative materials or improved recycling methods. It can be found in products such as cling film, retort pouches, and blister packaging.