The surface of glass beads were modified with covalently bonded poly(a
crylic acid). The optimum reaction conditions were determined to graft
poly(acrylic acid) effectively onto the glass surface. The dependence
of the graft polymer molecular weight, grafting percentage and monome
r weight conversion based on these reaction conditions were consistent
with free radical kinetics. Crafting efficiency for azobisisobutyroni
trile was more complex compared with the benzyl peroxide initiator sys
tem. (C) 1997 by John Wiley & Sons, Ltd.