3D printing of a recycled copolyester of terephthalic acid, cyclohexanedimethanol and tetramethylcyclobutanediol

Bhagia, Samarthya; Kore, Surbhi; Wasti, Sanjita; Ďurkovič, Jaroslav; Kováč, Ján; Zhao, Xianhui; Andrews, Hunter B.; Martin, Madhavi; Gallego, Nidia C.; Vaidya, Uday; Ozcan, Soydan

doi:10.1016/j.polymertesting.2022.107916

3D printing of a recycled copolyester of terephthalic acid, cyclohexanedimethanol and tetramethylcyclobutanediol

Journal Article · Mon Dec 26 00:00:00 EST 2022 · Polymer Testing

DOI:https://doi.org/10.1016/j.polymertesting.2022.107916· OSTI ID:1922311

^[1]; Kore, Surbhi ^[2]; Wasti, Sanjita ^[2]; ^[3]; ^[3]; ^[1]; ^[1]; ^[1]; ^[1]; ^[4]; ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Univ. of Tennessee, Knoxville, TN (United States)
Technical University in Zvolen (Slovak Republic)
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Institute for Advanced Composites Manufacturing Innovation (IACMI), Knoxville, TN (United States)

2,2,4,4-Tetramethyl-1,3-cyclobutanediol (TMCD) is a diol monomer for terephthalic acid (TPA) class of copolyesters that can increase the glass transition temperature and mechanical strength in comparison to conventional TPA polyesters. TMCD-modified poly (1,4-cyclohexylenedimethylene terephthalate) (PCTT) has been used to manufacture consumer products with good toughness, heat resistance and clarity. However, the suitability of PCTT in 3D printing had not been evaluated. Therefore, consumer plasticware was used as the starting material to investigate the suitability of this copolyester for fused deposition modeling (FDM). Here, chemical structure, mechanical properties, thermal behavior and viscoelastic properties of this copolyester were studied. NMR spectroscopy found that the copolyester had cyclohexanedimethanol (CHDM) and TMCD contents at 76.5 mol% and 20 mol% of total diol, respectively. 280 °C printing temperature and 110 °C bed temperature were suitable conditions for printing. T_g of PCTT was 103 °C (25 °C higher than PETG). Young's modulus and impact strength of printed PCTT were at least 100% and 65% higher than printed PETG, respectively. The ease of printing, superior mechanical properties and T_g (103 °C) make the PCTT random copolyester highly applicable in additive manufacturing.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: Slovak Research and Development Agency; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1922311

Journal Information:: Polymer Testing, Journal Name: Polymer Testing Vol. 118; ISSN 0142-9418

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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3D printing of a recycled copolyester of terephthalic acid, cyclohexanedimethanol and tetramethylcyclobutanediol

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