Abstract:

Polypropylene（PP）is a very important general-purpose resin. However，the applications of PP in many fields are restricted due to its poor dyeability，antistatic property，hydrophilicity and poor compatibility with other polar polymers and mineral fillers. It is effective to improve the polarity and compatibility by grafting polar monomers onto PP backbone as side groups. Kinetic model and grafting mechanism for post-modification of PP are reviewed，which can provide a theoretic way to design the grafted products，improve the graft rate and change product properties. Different grafting monomers and their complex formulation are dicussed. The addition of chemical additives and how to synthetize them are also summarized. Moreover，the development of new multifunction monomers is discussed，which can provide examples and reference for preparing the grafted products.