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Artículo

Spray process to styrene grafting onto polyethylene film surface for paintability enhancement

Grafia, Ana LuisaIcon ; Martini, Raquel EvangelinaIcon ; Barbosa, Silvia ElenaIcon
Fecha de publicación: 04/2018
Editorial: Elsevier
Revista: Progress in Organic Coatings
ISSN: 0300-9440
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ingeniería Química

Resumen

A direct and fast post-processing method to modify polyethylene (PE) film surface is proposed in order to improve its paintability performance without changing its bulk properties. This goal is achieved by grafting styrene onto the PE film surface using a macrocarbocationic copolymerization reaction where both catalysts and reagents are sprayed directly on softened film respectively. Pure styrene as grafting molecule and aluminium chloride suspended in n-heptane as catalyst are used. Grafting reaction occurrence was assessed by analyzing the reacted film surface before and after extraction of non-grafted reaction products. The results confirmed by three independent analytical techniques evidence reaction occurrence. A graft-copolymer layer remains onto the PE film surface even when physically adhered reaction products were extracted. This layer enhances PE film water-affinity and paintability either with water or acrylics paints because of the grafted aromatic group and roughness increase. Besides, this modification increments PE thermal degradation temperature giving another beneficial effect for future film applications. The proposed modification film methodology has potential application in continuous film production as reagents spraying onto softened films could be applicable in a cast film extrusion line.
Palabras clave: FILM SURFACE MODIFICATION METHOD , POLYETHYLENE PAINTABILITY , SPRAYING , STYRENE GRAFTING
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/88012
URL: https://www.sciencedirect.com/science/article/pii/S0300944017302709
DOI: http://dx.doi.org/10.1016/j.porgcoat.2018.01.003
Colecciones
Articulos(IPQA)
Articulos deINSTITUTO DE INVESTIGACION Y DESARROLLO EN INGENIERIA DE PROCESOS Y QUIMICA APLICADA
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Grafia, Ana Luisa; Martini, Raquel Evangelina; Barbosa, Silvia Elena; Spray process to styrene grafting onto polyethylene film surface for paintability enhancement; Elsevier; Progress in Organic Coatings; 117; 4-2018; 91-101
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