ECOZEN®T110 (EZT), as a bio-based polyester has been used to improve the glass transition temperature (Tg) and thermal shape stability of polyethylene terephthalate (PET). In this study, the applicability of PET/EZT blends for manufacturing hot-filling bottles using an injection stretch blow molding machine in a conventional process was evaluated. A fully miscible blend (single Tg) was observed in 10 % EZT, despite the homogeneous phase being maintained in all other EZT ratios (30 %, 50 %, and 70 %). The addition of EZT led to an increase in the Tg and the transparency of the bottles, and maintains their original shape after the hot-filling tests. High Tg bottles with a low melting point and crystallinity were obtained, circumventing the need for complex equipment and time-consuming processes that are otherwise required for conventional PET bottles. Therefore, the PET/EZT blends can be used as an alternative material to manufacture hot-filling bottles using conventional bottle processing.
|Journal||Food Packaging and Shelf Life|
|Publication status||Published - 2021 Dec|
Bibliographical noteFunding Information:
This study was supported by the National Research Foundation of Korea (NRF) , and a grant funded by the Korea government (MSIP) [grant number 2020R1A2B5B01001797 ].
All Science Journal Classification (ASJC) codes
- Food Science
- Safety, Risk, Reliability and Quality
- Polymers and Plastics
- Microbiology (medical)