Thermal and Mechanical Properties of PET/PEN-FBPE Copolymers Containing Fluorenylidenebis(2-phenoxyethanol)
- Authors
- Kong, Lee Sung; Lee, Young Sil; Yoon, Kwan Han
- Issue Date
- Sep-2017
- Publisher
- POLYMER SOC KOREA
- Keywords
- PET/PEN copolymer; fluorenylidenebis(2-phenoxyethanol); glass transition temperature; heat deflection temperature; transmittance
- Citation
- POLYMER-KOREA, v.41, no.5, pp.844 - 849
- Journal Title
- POLYMER-KOREA
- Volume
- 41
- Number
- 5
- Start Page
- 844
- End Page
- 849
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/1066
- DOI
- 10.7317/pk.2017.41.5.844
- ISSN
- 0379-153X
- Abstract
- PET/PEN-FBPE copolymers containing fluorenylidene bis(2-phenoxyethanol) (FBPE) were prepared with various FBPE concentrations. The concentration of PEN in PET/PEN copolymer was fixed at 8 mol%. The glass transition temperature of copolymer was increased from 72 degrees C for PET/PEN copolymer to 117 degrees C for PET/PEN-FBPE copolymer containing 20 mol% of FBPE. The thermal decomposition temperature of copolymer measured at 5 wt% loss was increased from 369 degrees C for PET/PEN copolymer to 423 degrees C for PET/PEN-FBPE copolymer containing 20 mol% of FBPE. Also, the heat deflection temperature was increased from 66 to 105 degrees C with FBPE concentration. The impact strength was also increased from 6.2 to 10.5 J/m with increasing FBPE concentration. The effect of FBPE on the tensile modulus was not observed, but the tensile strength increased from 51 to 74 MPa at 20 mol% loading of FBPE. The optical transparency of copolymer was slightly decreased from 90 to 87% with increasing FBPE concentration.
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