Chitosan–Starch–Keratin composites: Improving thermo-mechanical and degradation properties through chemical modification

dc.creatorFLORES HERNANDEZ, CYNTHIA GRACIELA; 253812
dc.creatorCOLIN CRUZ, ARTURO; 35017
dc.creatorVELASCO SANTOS, CARLOS; 121788
dc.creatorCastaño Meneses, Víctor Manuel; 3211
dc.creatorOLIVAS ARMENDARIZ, IMELDA; 69305
dc.creatorMartínez Hernández, Ana Laura;x1242437
dc.creatorFLORES HERNANDEZ, CYNTHIA GRACIELA
dc.creatorCOLIN CRUZ, ARTURO
dc.creatorVELASCO SANTOS, CARLOS|Castaño Meneses, Víctor Manuel
dc.creatorOLIVAS ARMENDARIZ, IMELDA
dc.creatorMartínez Hernández, Ana Laura
dc.date2017-11-16T19:45:35Z
dc.date2017-11-16T19:45:35Z
dc.date2017-04-04
dc.identifierISSN: 1566-2543 (Print) 1572-8900 (Online)
dc.identifierhttp://hdl.handle.net/20.500.11799/67797
dc.descriptionThe lysozyme test shows an improved in the degradability rate, the weight loss of the films at 21 days is reduced from 73 % for chitosan-starch matrix up to 16 % for the composites with 5wt% of quill; but all films show a biodegradable character depending on keratin type and chemical modification. The outstanding properties related to the addition of treated keratin materials show that these natural composites are a remarkable alternative to potentiat-ing chitosan–starch films with sustainable features
dc.descriptionChitosan–starch polymers are reinforced with different keratin materials obtained from chicken feather. Keratin materials are treated with sodium hydroxide; the modified surfaces are rougher in comparison with untreated surfaces, observed by Scanning Electron Microscopy. The results obtained by Differential Scanning Calorimetry show an increase in the endothermic peak related to water evaporation of the films from 92 °C (matrix) up to 102–114 °C (reinforced composites). Glass transition temperature increases from 126 °C in the polymer matrix up to 170–200 °C for the composites. Additionally, the storage modulus in the composites is enhanced up to 1614 % for the composites with modified ground quill, 2522 % for composites with modified long fiber and 3206 % for the composites with modified short fiber. The lysozyme test shows an improved in the degradability rate, the weight loss of the films at 21 days is reduced from 73 % for chitosan-starch matrix up to 16 % for the composites with 5wt% of quill; but all films show a biodegradable character depending on keratin type and chemical modification. The outstanding properties related to the addition of treated keratin materials show that these natural composites are a remarkable alternative to potentiat-ing chitosan–starch films with sustainable features
dc.descriptionUniversidad Autónoma del Estado de México Tecnológico Nacional de México, Instituto Tecnológico de Querétaro Universidad Nacional Autónoma de México Tecnológico Nacional de México, Instituto Tecnológico de Celaya Universidad Autónoma de Cd. Juárez
dc.languageeng
dc.publisherSpringer Science
dc.relationDOI 10.1007/s10924-017-1115-1;
dc.rightsopenAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subjectChemical modification
dc.subjectKeratin
dc.subjectChicken feather
dc.subjectSodium hydroxide
dc.subjectBiopolymer composite
dc.subjectBIOLOGÍA Y QUÍMICA
dc.titleChitosan–Starch–Keratin composites: Improving thermo-mechanical and degradation properties through chemical modification
dc.typeArtículo
dc.typearticle


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