Grafting onto wool. II. BPO‐initiated grafting of polystyrene

Grafting of polystyrene (PS) onto wool has been carried out in aqueous medium by use of benzoyl peroxide (BPO) as initiator in the presence of an acetic acid–pyridine mixture which acted as a pH modifier. Percent grafting was found to be dependent on concentration of acetic acid and pyridine, concentration of monomer, concentration of BPO, and reaction temperature. The role of pH modifier upon BPO‐initiated grafting is established by the observation that no grafting occurred when one of the components of the pH modifier was absent.