聚丙烯后功能化接枝改性研究进展

Advances in post-functionalzation of polypropylene by grafting modification

聚丙烯(PP)是一种重要的通用树脂,然而由于缺乏极性导致其染色性、抗静电性、亲水性以及与极性聚合物、无机填料的相容性差,限制了它的进一步推广应用。提高PP极性和相容性行之有效的方法是在PP大分子链上接枝极性侧基。本文综述了PP后功能化接枝改性的动力学模型、接枝机理,为从分子水平来设计接枝物结构,提高接枝效果以及产品性能提供了理论上的依据;同时,对PP接枝改性时单体的选择及复配加以介绍,并对助剂的加入及合成方法加以说明。简单阐述了新型多功能接枝单体的研究近况,为PP接枝物的制备提供借鉴。

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.