부산대학교 도서관

Modification of Polyvinylidene fluoride (PVDF) by radiation grafting is a research hotspot in recent years. In this study, the monomer 2-Hydroxyethyl methacrylate (HEMA) was selected as the monomer, and N-methyl-2-pyrrolidone (NMP), N,N-Dimethylformamide (DMF), Dimethylacetamide (DMAc), and Dimethyl sulfoxide (DMSO) were used as the organic solvent to study the effect of the gamma-ray irradiation absorbed dose and monomer concentration on the grafting reaction of PVDF-g-PHEMA in the homogeneous solution system. The FT-IR spectrum of the PVDF-g-PHEMA and the viscosity analysis of the solution before and after irradiation indicated that the grafting reaction proceeded effectively. The grafting rate of PVDF-g-PHEMA increased first and then decreased with the increase of the absorbed dose, which may be due to the competition of three different reactions in the homogeneous solution. Meanwhile, it was found that DMF and DMSO were used as organic solvents, and the grafting rate of the products was the highest, followed by DMAc, and NMP was the lowest. A possible reaction competition mechanism based on the experimental results was also proposed. [ABSTRACT FROM AUTHOR]