抄録
In the case of styrene graft copolymerisation onto the wool fibers, the most effective methods were the emulsion polymerisation.
Results obtained are as follows:
1) The reaction rate of graft polymerisation differs from the case of styrene grafting as shown by the following equation. where, θ is the efficiency of grafting of MMA., K the reaction rate constant of grafting, t the time. The apparent activation energy of grafting calculated from the relation between lnK and l/T by Arrhenius equation was 17.5Kcal/mol.
2) The reaction rate constand K depends on the concentration of reducing agent and is proportional to the square root of this concentration.
3) According to the IR spectroscopic study, the characteristic absorption band could be found on the wave number 2950cm-1 and 2990cm-1, but not in the position of the graft polymerisation of MMA.
4) The molecular weight of the grafted PMMA is above the order of 105, and the tensile strength increases with the rising degree of grafting, the elongation decreases and the Young's modulus does not change.
5) The effect of heatsetting on the MMA grafted wool fabrics were examined, and the degree of grafting less than 50% were most effective.
