Melt grafting of a long-chain unsaturated carboxylic acid onto polypropylene

摘要

The melt grafting of a long-chain unsaturated carboxylic acid such as oleic acid(OA) and undecylenic acid(UA) onto polypropylene(PP) in a Haake Rheocord RC90 mixer was studied. The influence of initiator concentration, monomer concentration and reaction temperature on grafting was investigated. The experimental results shown that a higher degree of grafting was obtained using mixed initiators(DCP/BPO = 1:1). Increasing the monomer concentration leads to an initial rapid increase in the degree of grafting. The addition of styrene reduced the degradation of PP as well as the degree of grafting.