Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) |
Texto Completo: | https://repositorio.ufersa.edu.br/handle/prefix/6815 |
Resumo: | Diverse studies are being carried out from an ecological basis, aiming not only at a good performance of the material, but also at a positive alternative when it comes to sustainability. The distinction of sustainable development has gained vital importance, especially due to the shortage of raw materials derived from non-renewable natural resources and the problems resulting from environmental degradation. The search for products derived from sustainable materials has been treated as a basic tool in the search for alternatives to minimize the world's environmental problems. The use of raw materials from renewable sources has been an object of studies and research by several institutions, due to its potential to substitute products derived from petroleum. Based on this statement, the objective of this study was to obtain and characterize biodegradable films composed of ternary blends of biopolymers. The films produced were composed of chitosan, potato starch and sodium alginate, based on an experimental planning employing ternary mixture plan. The filmogenic solutions were obtained by the casting technique, with the dry matter fixed at 2%. The plasticizer used was glycerol and its percentage was fixed at 20%, in relation to the dry mass of biopolymer. After the production of biofilms, these were cut into specimens, to perform the mechanical characterization, SEM, solubility, PVA, color and opacity. An analysis of variance (ANOVA) was performed to obtain the models and the F Test was used to verify their statistical significance. After this verification, the graphs of response surfaces were generated. From the surfaces and the models obtained it was possible to evaluate the effect of the composition of the biopolymer blends on the parameters of tensile strength limit, modulus of elasticity, elongation at break, solubility, and water vapor permeability. The surface morphologies of the films were analyzed using the obtained micrographs (SEM) and used in understanding the properties of the films. The results pointed out that the polymeric blend of test 13 (80% potato starch and 20% sodium alginate) has the highest tensile strength, around 90% higher than potato starch alone, 71% higher than alginate alone, and 79% higher than chitosan alone. Regarding Young's modulus, it was observed that the blend of test 11 (80% potato starch and 20% chitosan) presented the highest modulus, around 90% higher than starch alone, 85% higher than chitosan alone, and 69% higher than alginate. The elongation at rupture, on the other hand, was greater with the blend of test 12 (80% chitosan and 20% alginate), around 86% greater than starch, 55% greater than chitosan and 82.8% greater than alginate. The concentration of chitosan in the formulation of the films negatively influenced the solubility property, compared to the blend that showed the lowest solubility rate, test 13 (80% potato starch and 20% sodium alginate), the chitosan is about 15% less soluble and this occurs due to the presence of free amino groups, being thus insoluble in water. The films that contained the presence of potato starch obtained better barrier properties, compared to the blend that showed the lowest rate of water vapor permeability, test 15 (80% chitosan and 20% potato starch), this showed to be about 15% less permeable. From the surface morphology analyzed it was observed the homogeneous and compact formation of biofilms. The biofilms constituted by the combination of two or more biopolymers showed satisfactory properties when compared to biofilms formulated by a single component |
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Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódioBiopolímerosBlendas poliméricasPlano de misturaPropriedades mecânicasBiopolymersBiopolymers blendsMixture planningMechanical propertiesENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICADiverse studies are being carried out from an ecological basis, aiming not only at a good performance of the material, but also at a positive alternative when it comes to sustainability. The distinction of sustainable development has gained vital importance, especially due to the shortage of raw materials derived from non-renewable natural resources and the problems resulting from environmental degradation. The search for products derived from sustainable materials has been treated as a basic tool in the search for alternatives to minimize the world's environmental problems. The use of raw materials from renewable sources has been an object of studies and research by several institutions, due to its potential to substitute products derived from petroleum. Based on this statement, the objective of this study was to obtain and characterize biodegradable films composed of ternary blends of biopolymers. The films produced were composed of chitosan, potato starch and sodium alginate, based on an experimental planning employing ternary mixture plan. The filmogenic solutions were obtained by the casting technique, with the dry matter fixed at 2%. The plasticizer used was glycerol and its percentage was fixed at 20%, in relation to the dry mass of biopolymer. After the production of biofilms, these were cut into specimens, to perform the mechanical characterization, SEM, solubility, PVA, color and opacity. An analysis of variance (ANOVA) was performed to obtain the models and the F Test was used to verify their statistical significance. After this verification, the graphs of response surfaces were generated. From the surfaces and the models obtained it was possible to evaluate the effect of the composition of the biopolymer blends on the parameters of tensile strength limit, modulus of elasticity, elongation at break, solubility, and water vapor permeability. The surface morphologies of the films were analyzed using the obtained micrographs (SEM) and used in understanding the properties of the films. The results pointed out that the polymeric blend of test 13 (80% potato starch and 20% sodium alginate) has the highest tensile strength, around 90% higher than potato starch alone, 71% higher than alginate alone, and 79% higher than chitosan alone. Regarding Young's modulus, it was observed that the blend of test 11 (80% potato starch and 20% chitosan) presented the highest modulus, around 90% higher than starch alone, 85% higher than chitosan alone, and 69% higher than alginate. The elongation at rupture, on the other hand, was greater with the blend of test 12 (80% chitosan and 20% alginate), around 86% greater than starch, 55% greater than chitosan and 82.8% greater than alginate. The concentration of chitosan in the formulation of the films negatively influenced the solubility property, compared to the blend that showed the lowest solubility rate, test 13 (80% potato starch and 20% sodium alginate), the chitosan is about 15% less soluble and this occurs due to the presence of free amino groups, being thus insoluble in water. The films that contained the presence of potato starch obtained better barrier properties, compared to the blend that showed the lowest rate of water vapor permeability, test 15 (80% chitosan and 20% potato starch), this showed to be about 15% less permeable. From the surface morphology analyzed it was observed the homogeneous and compact formation of biofilms. The biofilms constituted by the combination of two or more biopolymers showed satisfactory properties when compared to biofilms formulated by a single componentDiversos estudos estão sendo realizados a partir de uma base ecológica, visando além de um bom desempenho do material, uma alternativa positiva tratando de sustentabilidade. A distinção de desenvolvimento sustentável ganhou uma importância vital, sobretudo devido à carência de matéria-prima derivada de recursos naturais não renováveis e aos problemas resultantes da degradação ambiental. A procura por produtos derivados de materiais sustentáveis tem sido tratada como ferramenta básica na busca de alternativas para minimizar os problemas ambientais do mundo. O uso de matérias-primas de fontes renováveis vem constituindo um objeto de estudos e pesquisas de diversas instituições, devido ao seu potencial na substituição de produtos derivados do petróleo. Com base nessa afirmação, o objetivo deste estudo foi obter e caracterizar filmes biodegradáveis constituídos por blendas ternárias de biopolímeros. Os filmes produzidos foram compostos por quitosana, fécula de batata e alginato de sódio, com base em um planejamento experimental empregando plano ternário de mistura. As soluções filmogênicas foram obtidas pela técnica casting, com a matéria seca fixa em 2%. O plastificante utilizado foi o glicerol e sua porcentagem foi fixa em 20%, em relação à massa seca de biopolímero. Após a produção dos biofilmes, estes foram cortados em corpos de prova, para a realização da caracterização mecânica, MEV, solubilidade, PVA, cor e opacidade. Foi realizada uma análise de variância (ANOVA) para obtenção dos modelos e o Teste F para verificar a significância estatística destes. Após essa verificação, foram gerados os gráficos de superfícies de respostas. A partir das superfícies e dos modelos obtidos foi possível avaliar o efeito da composição das blendas biopoliméricas sobre os parâmetros de limite de resistência à tração, módulo de elasticidade, alongamento na ruptura, solubilidade e permeabilidade ao vapor de água. As morfologias das superfícies dos filmes foram analisadas através das micrografias obtidas (MEV) e usadas na compreensão das propriedades dos filmes. Os resultados apontaram que a blenda polimérica do ensaio 13 (80% fécula de batata e 20% alginato de sódio) possui a maior resistência à tração, em torno de 90% maior que a fécula de batata isolada, 71% maior que o alginato isolado e 79% maior que a quitosana isolada. Em relação ao módulo de Young, foi observado que a blenda do ensaio 11 (80% fécula de batata e 20% quitosana) apresentou o maior módulo, com cerca de 90% maior que a fécula isolada, 85% maior que a quitosana isolada e 69% maior que o alginato. Já o alongamento na ruptura foi maior com a blenda do ensaio 12 (80% quitosana e 20% alginato), em torno de 86% maior que a fécula, 55% que a quitosana e 82,8% que o alginato. A concentração de quitosana na formulação dos filmes influenciou negativamente a propriedade de solubilidade, em comparação a blenda que apresentou a menor taxa de solubidade, ensaio 13 (80% fécula de batata e 20% alginato de sódio), a quitasana é cerca de 15% menos solúvel e isso ocorre devido a presença de grupamentos amino livres, sendo dessa forma insolúvel em água. Os filmes que continham a presença da fécula de batata obtiveram melhores propriedades de barreira, em relação a blenda que apresentou a menor taxa de permeabilidade ao vapor de água, ensaio 15 (80% quitosana e 20% fécula de batata), esta apresentou ser cerca de 15% menos permeável. A partir da morfologia de superfície analisada foi observada a formação homogênea e compacta dos biofilmes. Os biofilmes constituídos pela combinação de dois ou mais biopolímeros apresentaram propriedades satisfatórias quando comparados aos biofilmes formulados por um único componenteCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESUniversidade Federal Rural do Semi-ÁridoBrasilCentro de Ciências Exatas e Naturais - CCENUFERSAPrograma de Pós-Graduação em Ciência e Engenharia de MateriaisSilva Júnior, Manoel Quirino da04045779469http://lattes.cnpq.br/0442576277649249Leite, Ricardo Henrique de Lima52264343400http://lattes.cnpq.br/3801476460958779Santos, Francisco Klebson Gomes00779263405http://lattes.cnpq.br/0273000754120553Fraga, Francisco Edson Nogueira77076877368http://lattes.cnpq.br/0858331193248993Ferreira, Rafael de Queiroz64941221320http://lattes.cnpq.br/5053247764430323Leite, Ricardo Henrique de Lima52264343400http://lattes.cnpq.br/3801476460958779Gonçalves, Francielle Cristine Pereira2021-12-15T21:46:19Z2021-06-232021-12-15T21:46:19Z2021-03-23info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfGonçalves (2021) (GONÇALVES, 2021)https://repositorio.ufersa.edu.br/handle/prefix/6815porGONÇALVES, Francielle Cristine Pereira. Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio. 2021. 80 f. Dissertação (Mestrado em Ciência e Engenharia de Materiais), Universidade Federal Rural do Semi-Árido, Mossoró, 2021.CC-BY-SAhttps://creativecommons.org/licenses/by-sa/4.0/deed.pt_BRinfo:eu-repo/semantics/openAccessreponame:Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU)instname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSA2023-12-20T21:32:49Zoai:repositorio.ufersa.edu.br:prefix/6815Repositório Institucionalhttps://repositorio.ufersa.edu.br/PUBhttps://repositorio.ufersa.edu.br/server/oai/requestrepositorio@ufersa.edu.br || admrepositorio@ufersa.edu.bropendoar:2023-12-20T21:32:49Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) - Universidade Federal Rural do Semi-Árido (UFERSA)false |
dc.title.none.fl_str_mv |
Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio |
title |
Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio |
spellingShingle |
Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio Gonçalves, Francielle Cristine Pereira Biopolímeros Blendas poliméricas Plano de mistura Propriedades mecânicas Biopolymers Biopolymers blends Mixture planning Mechanical properties ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
title_short |
Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio |
title_full |
Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio |
title_fullStr |
Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio |
title_full_unstemmed |
Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio |
title_sort |
Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio |
author |
Gonçalves, Francielle Cristine Pereira |
author_facet |
Gonçalves, Francielle Cristine Pereira |
author_role |
author |
dc.contributor.none.fl_str_mv |
Silva Júnior, Manoel Quirino da 04045779469 http://lattes.cnpq.br/0442576277649249 Leite, Ricardo Henrique de Lima 52264343400 http://lattes.cnpq.br/3801476460958779 Santos, Francisco Klebson Gomes 00779263405 http://lattes.cnpq.br/0273000754120553 Fraga, Francisco Edson Nogueira 77076877368 http://lattes.cnpq.br/0858331193248993 Ferreira, Rafael de Queiroz 64941221320 http://lattes.cnpq.br/5053247764430323 Leite, Ricardo Henrique de Lima 52264343400 http://lattes.cnpq.br/3801476460958779 |
dc.contributor.author.fl_str_mv |
Gonçalves, Francielle Cristine Pereira |
dc.subject.por.fl_str_mv |
Biopolímeros Blendas poliméricas Plano de mistura Propriedades mecânicas Biopolymers Biopolymers blends Mixture planning Mechanical properties ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
topic |
Biopolímeros Blendas poliméricas Plano de mistura Propriedades mecânicas Biopolymers Biopolymers blends Mixture planning Mechanical properties ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
description |
Diverse studies are being carried out from an ecological basis, aiming not only at a good performance of the material, but also at a positive alternative when it comes to sustainability. The distinction of sustainable development has gained vital importance, especially due to the shortage of raw materials derived from non-renewable natural resources and the problems resulting from environmental degradation. The search for products derived from sustainable materials has been treated as a basic tool in the search for alternatives to minimize the world's environmental problems. The use of raw materials from renewable sources has been an object of studies and research by several institutions, due to its potential to substitute products derived from petroleum. Based on this statement, the objective of this study was to obtain and characterize biodegradable films composed of ternary blends of biopolymers. The films produced were composed of chitosan, potato starch and sodium alginate, based on an experimental planning employing ternary mixture plan. The filmogenic solutions were obtained by the casting technique, with the dry matter fixed at 2%. The plasticizer used was glycerol and its percentage was fixed at 20%, in relation to the dry mass of biopolymer. After the production of biofilms, these were cut into specimens, to perform the mechanical characterization, SEM, solubility, PVA, color and opacity. An analysis of variance (ANOVA) was performed to obtain the models and the F Test was used to verify their statistical significance. After this verification, the graphs of response surfaces were generated. From the surfaces and the models obtained it was possible to evaluate the effect of the composition of the biopolymer blends on the parameters of tensile strength limit, modulus of elasticity, elongation at break, solubility, and water vapor permeability. The surface morphologies of the films were analyzed using the obtained micrographs (SEM) and used in understanding the properties of the films. The results pointed out that the polymeric blend of test 13 (80% potato starch and 20% sodium alginate) has the highest tensile strength, around 90% higher than potato starch alone, 71% higher than alginate alone, and 79% higher than chitosan alone. Regarding Young's modulus, it was observed that the blend of test 11 (80% potato starch and 20% chitosan) presented the highest modulus, around 90% higher than starch alone, 85% higher than chitosan alone, and 69% higher than alginate. The elongation at rupture, on the other hand, was greater with the blend of test 12 (80% chitosan and 20% alginate), around 86% greater than starch, 55% greater than chitosan and 82.8% greater than alginate. The concentration of chitosan in the formulation of the films negatively influenced the solubility property, compared to the blend that showed the lowest solubility rate, test 13 (80% potato starch and 20% sodium alginate), the chitosan is about 15% less soluble and this occurs due to the presence of free amino groups, being thus insoluble in water. The films that contained the presence of potato starch obtained better barrier properties, compared to the blend that showed the lowest rate of water vapor permeability, test 15 (80% chitosan and 20% potato starch), this showed to be about 15% less permeable. From the surface morphology analyzed it was observed the homogeneous and compact formation of biofilms. The biofilms constituted by the combination of two or more biopolymers showed satisfactory properties when compared to biofilms formulated by a single component |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12-15T21:46:19Z 2021-06-23 2021-12-15T21:46:19Z 2021-03-23 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Gonçalves (2021) (GONÇALVES, 2021) https://repositorio.ufersa.edu.br/handle/prefix/6815 |
identifier_str_mv |
Gonçalves (2021) (GONÇALVES, 2021) |
url |
https://repositorio.ufersa.edu.br/handle/prefix/6815 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
GONÇALVES, Francielle Cristine Pereira. Obtenção e caracterização de filmes à base de blendas de fécula de batata, quitosana e alginato de sódio. 2021. 80 f. Dissertação (Mestrado em Ciência e Engenharia de Materiais), Universidade Federal Rural do Semi-Árido, Mossoró, 2021. |
dc.rights.driver.fl_str_mv |
CC-BY-SA https://creativecommons.org/licenses/by-sa/4.0/deed.pt_BR info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
CC-BY-SA https://creativecommons.org/licenses/by-sa/4.0/deed.pt_BR |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido Brasil Centro de Ciências Exatas e Naturais - CCEN UFERSA Programa de Pós-Graduação em Ciência e Engenharia de Materiais |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido Brasil Centro de Ciências Exatas e Naturais - CCEN UFERSA Programa de Pós-Graduação em Ciência e Engenharia de Materiais |
dc.source.none.fl_str_mv |
reponame:Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
instname_str |
Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) |
collection |
Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) |
repository.name.fl_str_mv |
Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU) - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
repositorio@ufersa.edu.br || admrepositorio@ufersa.edu.br |
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1809747480410062848 |