期刊
CHINESE JOURNAL OF POLYMER SCIENCE
卷 39, 期 3, 页码 337-343出版社
SPRINGER
DOI: 10.1007/s10118-020-2495-6
关键词
Aromatic polyester; Ring-opening polymerization; Metal-free catalyst; Polystyrene; Barrier properties
资金
- National Natural Science Foundation of China [51673131]
- Fundamental Research Funds for the Central Universities [171gjc37]
A series of semi-aromatic polyesters named as Poly(PO-CHO-PA) were synthesized using an economical catalyst combination, showing superior thermal stability and mechanical properties. These polyesters have potential as packaging materials due to their colorless, transparent nature and low gas permeability.
A series of semi-aromatic polyesters named as Poly(PO-CHO-PA) were facilely synthesizedviaring-opening terpolymerization of bio-based cyclohexane oxide (CHO)/propylene oxide (PO)/phthalic anhydride (PA) using economical U1/PPNCl as dual catalyst. The proportion of CHO-PA and PO-PA segments in polymer can be readily altered by changing the feed ratio of CHO/PO because the reactivity ratios of CHO and PO with PA calculated by Fineman-Ross method are comparable. All synthesized amorphous polyesters with various compositions show oneT(g)ranging from 62 degrees C to 133 degrees C. Significantly, the mechanical, thermal and barrier properties of these amorphous semi-aromatic polyesters are also adjustable and investigated for the first time. The results indicate the semi-polyesters exhibit superior thermostability (T(5%)ranging from 306 degrees C to 323 degrees C) and high tensile strength (40.21-55.7 MPa) that is comparable with polystyrene (PS). Furthermore, Poly(PO-CHO-PA) films possess a promising prospect as packaging materials because of its colorless and highly transparent nature, along with low oxygen and water vapor transmission rate. All above performances may guarantee its potential alternative to commercial PS.
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