Grating Of ε-Caprolactone Onto Polypropene Via Bulk-Melting/Surface Initiated Polymerization

Polycaprolactone (PCL) is a kind of biodegradable aliphatic polyester. It has been widely used in tissue engineering, bone fixation, and controlled drug delivery due to its biocompatible and a high permeability to drugs. Here, our work focused on the modification of common polymer materials with PCL. The research included that: grafting of PCL on polypropene (PP) by melt-grafting; grafting of PCL on the surface of PP film; and grafting of PCL on the surface of PET film.1. Traditionally, PP forms very poor immiscible blend with other polymers because it has no chemical functionalities; while PCL can form truly miscible blend with numerous polymers. Therefore, PP grafted with PCL would potentially be an extremely useful compatibilizer for many different PP blend combinations. But the studies about grafting PCL on PP were few up to now. The methods to prepare PP-g-PCL had some defects, for example, their process were very complex, or the special functionalized PP matrix was not...