Graft Modification of N, N/-methylene- bisacrylamide onto Silk in the Presence of Air
摘要
The graft modification of N, N/-methylene-bisacrylamide (NNMBAA) onto silk using ceric anunonium sulfate,potassium persulfate, ammonium persulfate and 2, 2-azobis (isobutyronitrile) as the initiators has been studied in the presence of air. To establish reaction conditions for the graft modification of NNMBAA onto silk, the effect of different variables such as the initiator concentration, monomer concentration, acetic acid concentration, time of polymerization, reaction temperature and liquor ratio (fabric: liq.) have been studied. The optimum grafting conditions were found.As evidence of grafting, analyses of amino acid composition and alkali solubility have been carried out.Grafting caused changes in amino acid composition and alkali solubility of silk. The observationhas been explained in relation to structural changes in the grafted silk.