抄録
Interfacial electrical properties of the surface of nylon 6 fibers ungrafted and grafted with acrylic and methacrylic acid were investigated. The isoelectric point (ζ=0) shifted into acidic side with increase in the amount of grafting.
In neutral and alkaline solution, saturated values of ζ-potential of fibers decreased with increase in the amount of grafting. Stern potential (φδ) and the position (t) of slipping plane in the electric double layer of the fiber surface were estimated. φδ of grafted fibers decreased with increase in the amount of grafting and the value of t for grafted fibers was greater than that for ungrafted fiber.
It was suggested from these facts that the grafted nylon 6 fiber swelled remarkably in solution and that the hydrogel layer was formed at the surface by grafting of the fiber surface.
