Study on the photodegradation of polypropylene under influence of nucleating agents

In this research it was aimed to see the effect of different nucleating and clarifying agents on photostability of the prepared sample. A kind of nano-halloysite tube (HNT) as a nucleating agent and one type of clarifiers based on sorbitol formulated in powder with the base PP powder resin. After samples preparation, fouriertransform infrared spectroscopy(FTIR) and tensile tests were performed to determine the extent of chemical degradation of 2 kinds PP films and neat PP during photodegredation. The obtained results showed that the addition of aforementioned nucleating and clarifying agents to PP would accelerate its photodegradation during the experiment interval. However, the sorbitol based clarifier had the highest impact and HNT had the lowest impact on the photodegradation of PP which was attributed to the transparency of the films towardsUV exposure as well as the optical absorptivity of the added nucleating and clarifying agents

Keywords:

Photodegradation , Polypropylene , HNT , DMDBS , Tensile properties