Digital.CSIC > Ciencia y Tecnología de Materiales > Instituto de Ciencia y Tecnología de Polímeros (ICTP) > (ICTP) Artículos >




Closed Access item Gas transport in surface-modified low-density polyethylene films with acrylic acid as a grafting agent

Authors:Costamagna, Vanina
Strumia, Miriam
López-González, Mar
Riande, Evaristo
Keywords:diffusion, enthalpic parameter, gas transport, low-density polyethylene films, permeability, permselectivity, poly(acrylic acid) layer, solubility
Issue Date:2006
Publisher:John Wiley & Sons
Citation:Journal of Polymer Science Part B: Polymer Physics 44 (19) : 2828–2840 (2006)
Abstract:The modification of polyethylene by the grafting of poly(acrylic acid) onto the surface of one of the faces of low-density polyethylene films with UV radiation is reported. The transport of oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, ethane, ethylene, propane, and argon across surface-modified films containing 3.7% poly(acrylic acid) has been investigated at several temperatures. The layer of poly(acrylic acid) grafted onto the surface of one of the faces of the films reduces the permeability coefficient of the gases by a factor of about 1/6. The sharp drop in the gas permeability as a result of the poly(acrylic acid) layer may arise either from the formation of ordered structures of the grafted chains or from the development of highly crosslinked structures. The values of the polymer–gas enthalpic interaction parameter for the modified film are higher than those for the unmodified one
Publisher version (URL):http://dx.doi.org/10.1002/polb.20945
Appears in Collections:(ICTP) Artículos

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.