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Surface modification of polyolefins by photografting of acrylic monomers
Author(s) -
Decker C.,
Zahouily K.
Publication year - 1998
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19981290109
Subject(s) - photografting , polyolefin , materials science , photoinitiator , acrylic acid , polymer chemistry , polypropylene , surface modification , polyethylene , benzophenone , acrylate , monomer , polymerization , uv curing , chemical engineering , polymer , curing (chemistry) , composite material , engineering , layer (electronics)
High‐speed surface modification of polypropylene (PP) and polyethylene (PE) films has been achieved by liquid phase photograft polymerisation of acrylic acid (AA) and hydroxypropyl acrylate (HPA). Benzophenone was used as photoinitiator to generate polymer radicals at the surface of the polyolefin film. The grafting reaction was carried out in aqueous solution or with the neat monomer, which was laminated between two PP films, in the presence of air. Under the intense illumination of a UV‐curing line, acrylic acid was grafted within seconds to polypropylene films or fabrics, which were thus made hydrophilic. Direct evidence of surface grafting was obtained through infrared spectroscopy analysis and surface energy measurements. This continuous photografting process proved to be very efficient to improve the adhesion of UV‐cured acrylate coatings on polyolefin‐made materials.