Abstract
To photograft vinyl acetate (VAc) onto low density polyethylene (LDPE) film, suitable solvents should be determined in advance. Different reagents were used as solvents of VAc (acetone, benzene, carbon tetrachloride, cyclohexane, cyclohexanone, ethyl acetate, methanol, tetrahydrofuran (THF) and N,N-dimethylformamide (DMF). All graft polymerizations were completed by two-steps, i.e., benzophenone (BP) pre-coated film samples were prepared onto which VAc was grafted. To prepare film samples containing BP, BP should be dissolved in a suitable solvent. The effects of various solvents of BP on grafting were examined, including acetone, benzene, chloroform, 2,4-dioxane, DMF, ethyl acetate, n-hexane, methanol and THF. Percent conversion (CP), grafting efficiency (GE) and grafting percent (GP) determined by gravimetry and contact angles of grafted films against water showed that reagents have different effects on the graft polymerizations. Acetone is the most suitable as solvent of BP or VAc. The behavior of solvents seems closely related to the affinity with the substrate.
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Deng, JP., Yang, WT. & Rånby, B. Surface Photograft Polymerization of Vinyl Acetate on Low Density Polyethylene Film. Effects of Solvent. Polym J 32, 834–837 (2000). https://doi.org/10.1295/polymj.32.834
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DOI: https://doi.org/10.1295/polymj.32.834
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