Systematic Study of Ethylene-Vinyl Acetate (EVA) in the Manufacturing of Protector Devices for the Orofacial System

The recycling of plastics is currently one of the most significant industrial challenges. Due to the enormous amounts of plastic wastes generated by various industry branches, it is essential to look for potential methods for their utilization. In the presented work, we investigated the recycling potential of wastes originated from the agricultural films recycling line. Their structure and properties were analyzed, and they were modified with 2.5 wt % of commercially available compatibilizers. The mechanical and thermal performance of modified wastes were evaluated by tensile tests, thermogravimetric analysis, and differential scanning calorimetry. It was found that incorporation of such a small amount of modifiers may overcome the drawbacks caused by the presence of impurities. The incorporation of maleic anhydride-grafted compounds enhanced the tensile strength of wastes by 13–25%. The use of more ductile compatibilizers—ethylene-vinyl acetate and paraffin increased the elongation at break by 55–64%. The presence of compatibilizers also reduced the stiffness of materials resulting from the presence of solid particles. It was particularly emphasized for styrene-ethylene-butadiene-styrene and ethylene-vinyl acetate copolymers, which caused up to a 20% drop of Young’s modulus. Such effects may facilitate the further applications of analyzed wastes, e.g., in polymer film production. Thermal performance was only slightly affected by compatibilization. It caused a slight reduction in polyethylene melting temperatures (up to 2.8 °C) and crystallinity degree (up to 16%). For more contaminated materials, the addition of compatibilizers caused a minor reduction in the decomposition onset (up to 6 °C). At the same time, for the waste after three washing cycles, thermal stability was improved. Moreover, depending on the desired properties and application, materials do not have to go through the whole recycling line, simplifying the process, reducing energy and water consumption. The presented results indicate that it is possible to efficiently use the materials, which do not have to undergo the whole recycling process. Despite the presence of impurities, they could be applied in the manufacturing of products which do not require exceptional mechanical performance.

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Preparation and characterization of ultra-lightweight fly ash-based cement foams incorporating ethylene-vinyl acetate emulsion and waste-derived C-S-H seeds

Construction and Building Materials ◽

10.1016/j.conbuildmat.2020.122027 ◽

2021 ◽

Vol 274 ◽

pp. 122027

Author(s):

Jiufu Zhang ◽

Ganghua Pan ◽

Xiaofang Zheng ◽

Chen Chen

Keyword(s):

Fly Ash ◽

Vinyl Acetate ◽

Ethylene Vinyl Acetate

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Flame-retardant ethylene vinyl acetate composite materials by combining additions of aluminum hydroxide and melamine cyanurate: Preparation and characteristic evaluations

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2021.01.026 ◽

2021 ◽

Vol 589 ◽

pp. 525-531 ◽

Cited By ~ 1

Author(s):

Siyi Xu ◽

Jianxi Li ◽

Qunfeng Ye ◽

Liguo Shen ◽

Hongjun Lin

Keyword(s):

Composite Materials ◽

Flame Retardant ◽

Vinyl Acetate ◽

Aluminum Hydroxide ◽

Ethylene Vinyl Acetate ◽

Melamine Cyanurate

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