Abstract
Antifog additives (AF) are incorporated into polymeric systems to improve their wettability. When added to a polyethylene (PE) film, the AF molecules migrate to the films' surface and their concentration decreases; over time the additive's effect desists. Extended additives' performance is necessary to avoid frequent substitution of PE films for different applications (e.g. greenhouses coverings), as a result, reducing plastics' waste and contributing to environmental sustainability.This paper presents a simple, low cost, one‐step reaction to create durable AF for PE films, as well as a thorough study of AF migration rate, fog activity, and film properties. Films are prepared by compression‐molding (laboratory scale) and cast‐extrusion (pilot scale). FTIR (Fourier Transform IR) and TGA (Thermal Gravimetric Analysis) measurements confirm the existence of AF grafted particles. Aging tests depict a significant decrease of the AF migration rate. An evaluation test procedure for AF performance shows an extended duration of the AF's activity; the cast‐extrusion films exhibit improved AF durability, compared with the compression‐molded films. Copyright © 2016 John Wiley & Sons, Ltd.
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