The influence of silane surface modification on microcrystalline cellulose characteristics

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal do Rio Grande do Sul (UFRGS)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade de Caxias do Sul (UCS)-
Autor(es): dc.creatorNeves, Roberta Motta-
Autor(es): dc.creatorOrnaghi, Heitor Luiz [UNESP]-
Autor(es): dc.creatorZattera, Ademir José-
Autor(es): dc.creatorAmico, Sandro Campos-
Data de aceite: dc.date.accessioned2022-02-22T00:23:55Z-
Data de disponibilização: dc.date.available2022-02-22T00:23:55Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-02-14-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.carbpol.2019.115595-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198221-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198221-
Descrição: dc.descriptionMicrocrystalline cellulose (MCC) can be a reinforcement in composites, especially after surface modification. In this paper, MCC was modified using 3-aminopropyltriethoxysilane (APTES) in the following ratios (MCC/APTES): 1:3, 1:4, 1:5, 1:10). The MCC morphologies did not change with the treatment even though the distribution of APTES over the MCC surface varied. FTIR analysis showed MCC and APTES characteristic peaks for all samples. The crystallinity index (CI) decreased with the APTES ratio. The non-isothermal kinetic degradation by thermogravimetric analysis in different heating rates was studiedin order to evaluate the kinetic triplet: activation energy Ea, exponential factor (A), and reaction order (f(α)). The Ea dependence on conversion degree was not affected, but two degradation steps were observed for all samples. Ratios up to 1:4 suggested two consecutive autocatalytic degradation mechanisms. The 1:5 and 1:10 ratios caused a change in the most probable degradation mechanism for nucleation followed by autocatalytic degradation mechanism.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionPostgraduate Program in Mining Metallurgical and Materials Engineering (PPGE3M) Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500-
Descrição: dc.descriptionFatigue and Aeronautical Material Research Group Department of Materials and Technology São Paulo State University (UNESP) School of Engineering-
Descrição: dc.descriptionPostgraduate Program in Engineering of Processes and Technologies (PGEPROTEC) Universidade de Caxias do Sul (UCS), Rua Francisco Getúlio Vargas, 1130-
Descrição: dc.descriptionFatigue and Aeronautical Material Research Group Department of Materials and Technology São Paulo State University (UNESP) School of Engineering-
Idioma: dc.languageen-
Relação: dc.relationCarbohydrate Polymers-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDegradation mechanism-
Palavras-chave: dc.subjectKinetics-
Palavras-chave: dc.subjectMicrocrystalline cellulose-
Palavras-chave: dc.subjectSilane-
Palavras-chave: dc.subjectSurface modification-
Título: dc.titleThe influence of silane surface modification on microcrystalline cellulose characteristics-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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