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Effect of non-functionalized and functionalized graphene oxide with a silane agent on the thermal and rheological properties of nylon 6,6

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Abstract

In this work, graphene oxide has been synthesized and functionalized with a silane agent to improve the interactions with nylon 6,6. The functionalization reactions for graphene oxide (GO) resulted in a different way as expected, a heteroatom was grafted into graphene hexagonal network, which led to a new route of chemical modification of graphene oxide sheets. The nanocomposites were obtained by a two-step extrusion process where the content of the nanofiller was of 0.30, 0.60, and 0.90 wt%, respectively. Subsequently, the composites were rheologically and thermally tested. Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) techniques were used to characterize the synthesized and functionalized graphene oxide. The composites were evaluated by dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC) methods. The results showed that graphene oxide acted as a nucleating agent, increasing the crystallinity and glass transition temperature of composites. An increment in rheological properties was also recorded, mainly in the loss and storage modulus of the composites. The obtained values of loss modulus of composite samples with functionalized GO (GOAPTS) were higher than those obtained for composites with unfunctionalized GO. The highest value of the storage modulus was for the composite sample with a content of 0.6 wt% of GOAPTS. A new reaction mechanism was detected between graphene oxide and 3-aminopropyl trimethoxysilane (APTS) forming pyridinium and pyridone on the graphene oxide sheets.

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Acknowledgements

The authors would like to acknowledge Tecnológico Nacional de Mexico (TecNM) for financial support (Project 10909.21-P). We also acknowledge the Centro de Investigación en Química Aplicada (CIQA) and their technicians Josue de Jesus Campos Oyervides, Maria Gualalupe Mendez Padilla, Rosario Rangel, Juan Francisco Zendejo Rodriguez, Maria Concepción Gonzalez and Rodrigo Cedillo García for their support in characterization of the samples.

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Authors and Affiliations

  1. Departamento de Ingeniería Química Y Bioquímica, Instituto Tecnológico de Ciudad Madero, Avenida. Primero de Mayo S/N, C.P 89460, Madero, Tamaulipas, México

    Cristina S. Torres-Castillo, José E. Fuentes-Agustín, Eric M. García-Reyes, Minerva A. M. Zamudio-Aguilar, Luisiana Morales-Zamudio, Tomas Lozano & Fabiola Navarro-Pardo

  2. Centro de Investigación en Química Aplicada (CIQA), Boulevard Enrique Reyna No. 140, C.P 25100, Saltillo, Coahuila, México

    Saúl Sanchez-Valdez & Guillermo Martinez-Colunga

  3. Chemical Engineering Department, École Polytechnique de Montréal, Stn Centre-Ville, 6079, Montreal, QC, H3C 3A7, Canada

    Sahir Karami & Pierre Lafleur

Authors
  1. Cristina S. Torres-Castillo
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  2. José E. Fuentes-Agustín
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  3. Eric M. García-Reyes
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  4. Minerva A. M. Zamudio-Aguilar
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  5. Luisiana Morales-Zamudio
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  6. Tomas Lozano
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  7. Fabiola Navarro-Pardo
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  8. Saúl Sanchez-Valdez
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  9. Guillermo Martinez-Colunga
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  10. Sahir Karami
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  11. Pierre Lafleur
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Corresponding authors

Correspondence to Luisiana Morales-Zamudio or Tomas Lozano.

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Torres-Castillo, C.S., Fuentes-Agustín, J.E., García-Reyes, E.M. et al. Effect of non-functionalized and functionalized graphene oxide with a silane agent on the thermal and rheological properties of nylon 6,6. Iran Polym J 32, 139–149 (2023). https://doi.org/10.1007/s13726-022-01110-3

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  • DOI: https://doi.org/10.1007/s13726-022-01110-3

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