Surface modification of cellulose nanocrystals by grafting with poly(lactic acid)
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Título: | Surface modification of cellulose nanocrystals by grafting with poly(lactic acid) |
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Autor/es: | Peltzer, Mercedes Ana | Pei, Aihua | Zhou, Qi | Berglund, Lars | Jiménez, Alfonso |
Grupo/s de investigación o GITE: | Análisis de Polímeros y Nanomateriales |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología |
Palabras clave: | Cellulose nanocrystals | Surface modification | Grafting-from | Ring-opening polymerization | L-lactide |
Área/s de conocimiento: | Química Analítica |
Fecha de publicación: | jun-2014 |
Editor: | Society of Chemical Industry |
Cita bibliográfica: | Polymer International. 2014, 63(6): 1056-1062. doi:10.1002/pi.4610 |
Resumen: | The use of biopolymers obtained from renewable resources is currently growing and they have found unique applications as matrices and/or nanofillers in ‘green’ nanocomposites. Grafting of polymer chains to the surface of cellulose nanofillers was also studied to promote the dispersion of cellulose nanocrystals in hydrophobic polymer matrices. The aim of this study was to modify the surface of cellulose nanocrystals by grafting from L-lactide by ring-opening polymerization in order to improve the compatibility of nanocrystals and hydrophobic polymer matrices. The effectiveness of the grafting was evidenced by the long-term stability of a suspension of poly(lactic acid)-grafted cellulose nanocrystals in chloroform, by the presence of the carbonyl peak in modified samples determined by Fourier transform infrared spectroscopy and by the modification in C1s contributions observed by X-ray photoelectron spectroscopy. No modification in nanocrystal shape was observed in birefringence studies and transmission electron microscopy. |
Patrocinador/es: | The authors gratefully acknowledge the financial support from the Spanish Ministry of Economy and Competitiveness (project Ref. MAT2011-28468-C02-01). |
URI: | http://hdl.handle.net/10045/37893 |
ISSN: | 0959-8103 (Print) | 1097-0126 (Online) |
DOI: | 10.1002/pi.4610 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2013 Society of Chemical Industry |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1002/pi.4610 |
Aparece en las colecciones: | INV - NANOBIOPOL - Artículos de Revistas |
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2014_Peltzer_etal_PolymInt_final.pdf | Versión final (acceso restringido) | 452,19 kB | Adobe PDF | Abrir Solicitar una copia |
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