Effect of glycerol on the morphology of nanocomposites made from thermoplastic starch and starch nanocrystals
Fully bio-based nanocomposites were prepared using starch nanoparticles obtained by acidic hydrolysis of waxy maize starch granules as reinforcement. The same type of starch, which contains 99 wt.% amylopectin, was used to prepare glycerol plasticized and unplasticized matrices. The X-ray diffractio...
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2011
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v84_n1_p203_Garcia http://hdl.handle.net/20.500.12110/paper_01448617_v84_n1_p203_Garcia |
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paper:paper_01448617_v84_n1_p203_Garcia2023-06-08T15:12:13Z Effect of glycerol on the morphology of nanocomposites made from thermoplastic starch and starch nanocrystals Biodegradable Glycerol Nanocomposites Nanocrystals Starch Waxy maize Acidic hydrolysis Bio-based Biodegradable Crystalline structure Fibrillar structures Permeability increase Reinforced material Starch nanocrystals Starch nanoparticles Storage moduli Thermoplastic starch Waxy maize Waxy maize starch Diffraction Glycerol Nanocomposites Nanocrystals Nanoparticles Scanning electron microscopy X ray diffraction Starch Zea mays Fully bio-based nanocomposites were prepared using starch nanoparticles obtained by acidic hydrolysis of waxy maize starch granules as reinforcement. The same type of starch, which contains 99 wt.% amylopectin, was used to prepare glycerol plasticized and unplasticized matrices. The X-ray diffraction pattern of the plasticized reinforced materials displays both A and B-type peaks, showing that the crystalline structure of the nanocrystals was not affected by processing. The storage modulus of the composite material increases, with respect to the unfilled film, by 470% at 50 °C, while the permeability increases by 70%. This is probably due to a good association of glycerol with the nanoparticles leading to a fibrillar structure, studied by scanning electron microscopy of plasticized and unplasticized composites. © 2010 Elsevier Ltd. All rights reserved. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v84_n1_p203_Garcia http://hdl.handle.net/20.500.12110/paper_01448617_v84_n1_p203_Garcia |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Biodegradable Glycerol Nanocomposites Nanocrystals Starch Waxy maize Acidic hydrolysis Bio-based Biodegradable Crystalline structure Fibrillar structures Permeability increase Reinforced material Starch nanocrystals Starch nanoparticles Storage moduli Thermoplastic starch Waxy maize Waxy maize starch Diffraction Glycerol Nanocomposites Nanocrystals Nanoparticles Scanning electron microscopy X ray diffraction Starch Zea mays |
| spellingShingle |
Biodegradable Glycerol Nanocomposites Nanocrystals Starch Waxy maize Acidic hydrolysis Bio-based Biodegradable Crystalline structure Fibrillar structures Permeability increase Reinforced material Starch nanocrystals Starch nanoparticles Storage moduli Thermoplastic starch Waxy maize Waxy maize starch Diffraction Glycerol Nanocomposites Nanocrystals Nanoparticles Scanning electron microscopy X ray diffraction Starch Zea mays Effect of glycerol on the morphology of nanocomposites made from thermoplastic starch and starch nanocrystals |
| topic_facet |
Biodegradable Glycerol Nanocomposites Nanocrystals Starch Waxy maize Acidic hydrolysis Bio-based Biodegradable Crystalline structure Fibrillar structures Permeability increase Reinforced material Starch nanocrystals Starch nanoparticles Storage moduli Thermoplastic starch Waxy maize Waxy maize starch Diffraction Glycerol Nanocomposites Nanocrystals Nanoparticles Scanning electron microscopy X ray diffraction Starch Zea mays |
| description |
Fully bio-based nanocomposites were prepared using starch nanoparticles obtained by acidic hydrolysis of waxy maize starch granules as reinforcement. The same type of starch, which contains 99 wt.% amylopectin, was used to prepare glycerol plasticized and unplasticized matrices. The X-ray diffraction pattern of the plasticized reinforced materials displays both A and B-type peaks, showing that the crystalline structure of the nanocrystals was not affected by processing. The storage modulus of the composite material increases, with respect to the unfilled film, by 470% at 50 °C, while the permeability increases by 70%. This is probably due to a good association of glycerol with the nanoparticles leading to a fibrillar structure, studied by scanning electron microscopy of plasticized and unplasticized composites. © 2010 Elsevier Ltd. All rights reserved. |
| title |
Effect of glycerol on the morphology of nanocomposites made from thermoplastic starch and starch nanocrystals |
| title_short |
Effect of glycerol on the morphology of nanocomposites made from thermoplastic starch and starch nanocrystals |
| title_full |
Effect of glycerol on the morphology of nanocomposites made from thermoplastic starch and starch nanocrystals |
| title_fullStr |
Effect of glycerol on the morphology of nanocomposites made from thermoplastic starch and starch nanocrystals |
| title_full_unstemmed |
Effect of glycerol on the morphology of nanocomposites made from thermoplastic starch and starch nanocrystals |
| title_sort |
effect of glycerol on the morphology of nanocomposites made from thermoplastic starch and starch nanocrystals |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v84_n1_p203_Garcia http://hdl.handle.net/20.500.12110/paper_01448617_v84_n1_p203_Garcia |
| _version_ |
1768542591923519488 |