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Molecular interactions arising in polyethylene-bentonite nanocomposites
A. E. Bonilla-Blancas
Issis Romero_Ibarra
Jorge Vazquez-Arenas
Octavio Manero
Jose Alvarez-Ramirez
En Embargo
31-10-2019
Atribución-NoComercial-CompartirIgual
https://doi.org/10.1002/app.46920
1097-4628
https://onlinelibrary.wiley.com/doi/abs/10.1002/app.46920
Bentonite
Functionalized ternary blends
Molecular interactions
Nanocomposite
Polyethylene
High density polyethylene (HDPE), linear low density polyethylene (LLDPE) and low density polyethylene (LDPE) are blended, and compared against a similar mixture but functionalized LDPE with maleic anhydride (MAh), HDPE‐LLDPE‐LDPE‐g‐MAh. In order to obtain nanocomposites from these polymer blends, a modified bentonite was added by incorporating l‐lysine into the bentonite galleries by melt extrusion. The resulting nanocomposites presented improved mechanical properties linked to strong polymer‐bentonite interactions and exfoliated structures as verified by transmission electron microscopy and rheometry. A detailed analysis of the feasible polymer‐bentonite interactions was conducted, of particular concern between the polar MAh groups and the intercalated l‐lysine. To gain further insights into the type of molecular interactions (i.e. polymer‐bentonite), a model nanocomposite was synthesized in solution to carry out further assessments through NMR, infrared spectroscopy and rheology analysis.
Elizabeth Bonilla acknowledges the CONACYT support (PhD Scholarship, 202749). We also thank the financial support of the project PAPIIT IN 103207 from UNAM and SECITI 071/2016. Also to F. Calderas, G. Cedillo, M. Carreón for the rheological, NMR and FTIR measurements, respectively.
Antonio Sánchez Solís, coautor
Additional Supporting Information: https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fapp.46920&file=app46920-sup-0001-supinfo.pdf
John Wiley & Sons, Inc.
2018
Artículo
Journal of Applied Polymer Science, vol. 135, 46920 (9 pág.)
Inglés
Bonilla‐Blancas A. E., Romero‐Ibarra I. C., Vazquez‐Arenas J., Sanchez‐Solis A., Manero O. and Alvarez‐Ramirez J.. (2018), Molecular interactions arising in polyethylene‐bentonite nanocomposites. J. Appl. Polym. Sci. 46920 doi: https://doi.org/10.1002/app.46920
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