Photoinduced Graft Copolymerization on Low Density Polyethlene Film

저밀도 폴리에틸렌 필름에의 광개시 그라프트 공중합

The photoirradiation graft copolymerization of acrylic acid (AA) onto low density polyethylene (LDPE) film using benzophenone (BP) as a photosensitizer in an aqueous medium was investigated. The effect of monomer concentration, photosensitizer concentration, and reaction time on the graft yield were evaluated. The moisture regain and the degree of swelling of grafted film were higher than those of original film. As the graft yield was increased, the initial modulus and the tensile strength at yield point were increased but the elongation at break point, the crystallinity, and the heat of fusion were decreased. The elongation at yield point and the melting point were sustained without great difference.