CORRELATION OF THE 'TRANS' CONFORMER CONTENT AND SEQUENCE PROBABILITY TO THE CRYSTALLINITY IN INJECTION STRETCH BLOW MOLDED PET BOTTLES

摘要

The relative 'trans' conformer content of the glycol moiety in various types of injection stretch blow molded PET bottles was determined by an ATR-FTIR analysis. The total 'trans' conformer (t) content and the calculated 'trans' diad (-t-t-) and triad (-t-t-t-) sequence probabilities were correlated to the % crystallinity. The effects of the orientation and heat setting on the residual 'trans' content in the amorphous phase is discussed.