EVA as a Polymer: Technical, Physical, and Structural Characteristics
EVA as a Polymer: Technical, Physical, and Structural Characteristics Ethylene-Vinyl Acetate (EVA) is one of the most versatile polymers used in modern footwear, especially in clogs, sandals, and work shoes. Its unique copolymer structure combines flexibility, durability, and comfort, making it the material of choice for Artifactus clogs. This article explores the technical, physical, and structural properties of EVA that set it apart from other polymers such as polyurethane (PU) and rubber. 1. Chemical Composition of EVA EVA is a copolymer of ethylene and vinyl acetate. The vinyl acetate content typically ranges from 10% to 40%, and this ratio determines the softness, flexibility, and resilience of the material. Higher vinyl acetate content increases elasticity and transparency, while lower levels improve rigidity. This tunable property allows manufacturers to optimize EVA for different footwear applications. 2. Physical Properties of EVA - **Density**: Lightweight (0....