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Preparation and Characterization of Flexible, Transparent and Thermally Stable Aromatic Co-polyamides

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Abstract

Two aromatic co-polyamides were synthesized combining two diacid monomers containing bulky pendant groups, 5-(9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboximido)isophthalic acid (DEAIA) and 5-tert-butylisophthalic acid (TERT), with 4,4′-(hexafluoroisopropylidene)dianiline (HFA) or 2,3,5,6-tetramethyl-1,4-phenylenediamine (Durene) by direct polycondensation. The structures of the obtained aromatic co-polyamides were confirmed by FTIR, Raman and 1H-NMR. The co-copolyamide films, DHTH and DDTD, exhibited rms-roughness values between 0.94 and 1.60 nm, respectively. Moreover, they presented good thermal stability up to 300 °C. Young’s moduli of the co-polyamide films were between 4.1 and 4.3 GPa. X-ray diffraction results showed that the co-polyamide films were amorphous due to the incorporation of both bulky pendant groups, tert-butyl and dibenzobarrelene. The combination of bulky pendant groups provided intrinsically transparent co-polyamide films with a transmittance higher than 88% in the range of 400−780 nm. Due to these outstanding film and optical properties, they are suggested to be flexible substrates in applications for solar cell and other portable electronic devices.

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Acknowledgements

The authors thankfully acknowledge the financial support from CONACYT-México (No. 248378). J. A. Tec-Sánchez thanks CONACYT-México for the fellowship 427467. This work was partially supported by the project “Fortalecimiento e internacionalización del doctorado en ciencias (Materiales Poliméricos) del CICY” FOMIX YUC 2014-C17-247046. The authors thank LANNBIO Cinvestav-Merida for the NMR measurements.

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Authors and Affiliations

  1. Unidad de Materiales, Centro de Investigación Científica de Yucatán A. C., Calle 43 No.130 x 32 y 34, Col. Chuburná de Hidalgo, C.P. 97205, Mérida, Yucatán, México

    José Antonio Tec-Sánchez, Manuel Aguilar-Vega, Juan Valerio Cauich-Rodríguez & José Luis Santiago-García

  2. Centro de Investigación y de Estudios Avanzados del IPN, Unidad Mérida, Departamento de Física Aplicada, Km. 6 Antigua Carretera a Progreso, AP 73-Cordemex, 97310, Mérida Yucatán, México

    Andrés Iván Oliva Arias

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  1. José Antonio Tec-Sánchez
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  2. Andrés Iván Oliva Arias
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  3. Manuel Aguilar-Vega
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  4. Juan Valerio Cauich-Rodríguez
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  5. José Luis Santiago-García
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Correspondence to Juan Valerio Cauich-Rodríguez.

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Tec-Sánchez, J.A., Arias, A.I.O., Aguilar-Vega, M. et al. Preparation and Characterization of Flexible, Transparent and Thermally Stable Aromatic Co-polyamides. Chin J Polym Sci 37, 136–141 (2019). https://doi.org/10.1007/s10118-019-2190-7

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  • DOI: https://doi.org/10.1007/s10118-019-2190-7

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