| Texto completo | |
| Autor(es): |
da Silva, Thais Ferreira
[1]
;
Monteiro de Souza, Gabriel Portilho
[1]
;
de Melo Morgado, Guilherme Ferreira
[1]
;
Albers, Ana Paula Fonseca
[2]
;
Quinteiro, Eduardo
[2]
;
Passador, Fabio Roberto
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] UNIFESP Fed Univ Sao Paulo, TecPBio Polymer & Biopolymer Technol Lab, 330 Talim St, BR-12231280 Sao Jose Dos Campos, SP - Brazil
[2] UNIFESP Fed Univ Sao Paulo, Ceram Technol Lab, 330 Talim St, BR-12231280 Sao Jose Dos Campos, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF POLYMER RESEARCH; v. 29, n. 3 MAR 2022. |
| Citações Web of Science: | 0 |
| Resumo | |
Attapulgite (ATP) is a low-cost hydrated clay mineral of aluminum and magnesium and can be used for the preparation of linear low-density polyethylene (LLDPE) nanocomposites. However, the ATP contains accessory minerals that can harm their performance and hinder their polymer interaction. Then, a purification process of this clay mineral is necessary to raise the interactions between ATP and LLDPE. Furthermore, the non-polar nature of LLDPE can also hinder these interactions. One way to improve these interactions is the surface modification of ATP. In this way, the ATP was modified using aminosilane (3-aminopropyl) triethoxysilane (APTES). Raw ATP (ATPr), purified ATP (ATPp), and silanized ATP (ATPs) were characterized, and LLDPE/ATP nanocomposites with 3 and 5 wt% of ATPr, ATPp, and ATPs were prepared by extrusion. The nanocomposites were characterized by scanning electron microscopy (SEM), mechanical properties (tensile tests, Shore D hardness, and impact strength), and X-ray diffraction. APTES was grafted onto the clay surface. The APTES did not modify the crystal structure of ATP and, in addition, it improved the mechanical properties of LLDPE/ATPs nanocomposites. The addition of 5 wt% of ATPs increases the tensile strength, elastic modulus, and Shore D hardness, in addition to improving the dispersion of nanoclay in the polymer matrix. (AU) | |
| Processo FAPESP: | 16/19978-9 - Desenvolvimento de nanocompósitos de blendas de PA6/LLDPE e negro de fumo para embalagens antiestáticas para componentes eletrônicos |
| Beneficiário: | Fabio Roberto Passador |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 20/12501-8 - Desenvolvimento de embalagens antiestáticas e biodegradáveis baseadas em compósitos híbridos de poliésteres com adição de carbono vítreo e nanoplacas de grafeno |
| Beneficiário: | Fabio Roberto Passador |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |