Resumen
Using solution-casting method, binary blends of chitosan (CS) and poly (ethylene oxide) (PEO 100,000) containing Au nanoparticles (AuNPs) were prepared. Shifts in the melting temperature (Tm) and crystallization temperature (Tc) values for CS/PEO and CS/PEO/AuNPs blends were observed by calorimetric analysis. In general, CS/PEO/AuNPs blends tended to decompose at higher temperatures than neat polymers. From the FT-IR spectra, shifts in the main signals, such as -NH2, -OH and C-O-C, were detected in the blends and were attributed to the polymer interactions and the incorporation of gold nanoparticles. In addition, the analysis of the blend topographies by atomic force microscopy (AFM) showed that at a higher CS content, more homogenous surfaces were observed. This behavior was attributed to the interactions present in the CS/PEO/AuNPs blends. Finally, theoretical analyses helped to confirm that the gold nanoparticles would be preferentially adsorbed onto the chitosan microdomains due to the interactions between acetyl and hydroxyl groups and Au atoms.
| Idioma original | English |
|---|---|
| Páginas (desde-hasta) | 315-329 |
| Número de páginas | 15 |
| Publicación | Carbohydrate Polymers |
| Volumen | 144 |
| DOI | |
| Estado | Published - 25 jun 2016 |
| Publicado de forma externa | Sí |
Huella dactilar
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry
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Thermal and morphological behavior of chitosan/PEO blends containing gold nanoparticles. Experimental and theoretical studies. / Bonardd, Sebastián; Schmidt, Mathias; Saavedra-Torres, Mario; Leiva, Angel; Radic, Deodato; Saldías, César.
En: Carbohydrate Polymers, Vol. 144, 25.06.2016, p. 315-329.Resultado de la investigación: Article
TY - JOUR
T1 - Thermal and morphological behavior of chitosan/PEO blends containing gold nanoparticles. Experimental and theoretical studies
AU - Bonardd, Sebastián
AU - Schmidt, Mathias
AU - Saavedra-Torres, Mario
AU - Leiva, Angel
AU - Radic, Deodato
AU - Saldías, César
PY - 2016/6/25
Y1 - 2016/6/25
N2 - Using solution-casting method, binary blends of chitosan (CS) and poly (ethylene oxide) (PEO 100,000) containing Au nanoparticles (AuNPs) were prepared. Shifts in the melting temperature (Tm) and crystallization temperature (Tc) values for CS/PEO and CS/PEO/AuNPs blends were observed by calorimetric analysis. In general, CS/PEO/AuNPs blends tended to decompose at higher temperatures than neat polymers. From the FT-IR spectra, shifts in the main signals, such as -NH2, -OH and C-O-C, were detected in the blends and were attributed to the polymer interactions and the incorporation of gold nanoparticles. In addition, the analysis of the blend topographies by atomic force microscopy (AFM) showed that at a higher CS content, more homogenous surfaces were observed. This behavior was attributed to the interactions present in the CS/PEO/AuNPs blends. Finally, theoretical analyses helped to confirm that the gold nanoparticles would be preferentially adsorbed onto the chitosan microdomains due to the interactions between acetyl and hydroxyl groups and Au atoms.
AB - Using solution-casting method, binary blends of chitosan (CS) and poly (ethylene oxide) (PEO 100,000) containing Au nanoparticles (AuNPs) were prepared. Shifts in the melting temperature (Tm) and crystallization temperature (Tc) values for CS/PEO and CS/PEO/AuNPs blends were observed by calorimetric analysis. In general, CS/PEO/AuNPs blends tended to decompose at higher temperatures than neat polymers. From the FT-IR spectra, shifts in the main signals, such as -NH2, -OH and C-O-C, were detected in the blends and were attributed to the polymer interactions and the incorporation of gold nanoparticles. In addition, the analysis of the blend topographies by atomic force microscopy (AFM) showed that at a higher CS content, more homogenous surfaces were observed. This behavior was attributed to the interactions present in the CS/PEO/AuNPs blends. Finally, theoretical analyses helped to confirm that the gold nanoparticles would be preferentially adsorbed onto the chitosan microdomains due to the interactions between acetyl and hydroxyl groups and Au atoms.
KW - Chitosan blends
KW - Gold nanoparticles
KW - Nanocomposites
UR - http://www.scopus.com/inward/record.url?scp=84962330676&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2016.02.071
DO - 10.1016/j.carbpol.2016.02.071
M3 - Article
C2 - 27083823
AN - SCOPUS:84962330676
VL - 144
SP - 315
EP - 329
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
SN - 0144-8617
ER -