| |
|
|
| Registros recuperados : 5 | |
| 3. |  | SILVA, M. G. da; PFEIFER, M.; BORTOLETTO-SANTOS, R.; RIBEIRO, S. J. L.; POLITO, W. L.; RIBEIRO, C. Estudo e desenvolvimento de nanocompósitos como revestimento para a liberação controlada de fertilizantes. In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 13., 2021, São Carlos, SP. Anais... São Carlos: Embrapa Pecuária Sudeste: Embrapa Instrumentação, 2021. Editores técnicos: Alexandre Berndt, Ana Rita de Araujo Nogueira, Lea Chapaval Andri, Marcelo Mattos Cavallari, Manuel Antonio Chagas Jacinto.| Biblioteca(s): Embrapa Instrumentação. |
|    |
| 5. | | MAJARON, V. F.; SILVA, M. G. DA; PFEIFER, M.; BORTOLETTOSANTOS, R.; VELLOSO, C. C. V.; KLAIC, R.; POLITO, W. L.; RIBEIRO, S. J. L.; BERNARDI, A. C. de C.; FARINAS, C. S.; OLIVEIRA, C. R. de. Interaction of Aspergillus niger in double-coated urea granules reduces greenhouse gas emissions from N fertilization. Journal of Soil Science and Plant Nutrition, 2023. 10 p.| Biblioteca(s): Embrapa Instrumentação; Embrapa Pecuária Sudeste. |
|  |
| Registros recuperados : 5 | |
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
22/06/2021 |
|
Data da última atualização: |
10/06/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
PFEIFER, M.; ANDRADE, F. A. C.; BORTOLLETTO-SANTOS, R.; AOUADA, F. A.; RIBEIRO, C. |
|
Afiliação: |
CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
|
Título: |
Efect of diferent surface?charged lamellar materials on swelling properties of nanocomposite hydrogels. |
|
Ano de publicação: |
2021 |
|
Fonte/Imprenta: |
Journal of Polymers and the Environment, v. 29, 2021. |
|
Páginas: |
3311?3323 |
|
DOI: |
https://doi.org/10.1007/s10924-021-02120-7 |
|
Idioma: |
Inglês |
|
Conteúdo: |
This study investigated the efect of diferent surface-charged lamellar materials on the swelling and difusion properties of synthesized polyacrylamide-methylcellulose hydrogels (HG). Montmorillonite and thermally activated hydrotalcite (300 °C and 550 °C) were incorporated during the preparation of nanocomposite (NC) hydrogels. A series of NC hydrogels were prepared by varying the lamellar material content (1:1, 2:1 and 4:1). The results showed that the HG with hydrotalcite (550 °C) was strongly dependent on the ionic intensity, and that the swelling degree increased by 50%, 65% and 78% with reducing the hydrotalcite content at (1:1), (2:1) and (4:1), respectively. The water absorption capacity of HG containing montmorillonite or hydrotalcite (300 ºC) was slightly afected when the pH was decreased from 7 to 3. However, the pH variation from 7 to 10 increased the water absorption capacity of most HG, except those containing hydrotalcite (550 °C) at (2:1) and (4:1). The presence of lamellar nanoparticles in hydrogels made the polymer matrix more rigid, and less likely to absorb water. In contrast, HG with hydrotalcite (550 °C) at (2:1) and (4:1) showed anomalous behavior with an increase in their water absorption capacity. The results support that the developed NC-HG can be suitable candidate materials for controlled released applications |
|
Palavras-Chave: |
Hydrogel; Swelling degree. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02043naa a2200217 a 4500
001 2132501
005 2022-06-10
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10924-021-02120-7$2DOI
100 1 $aPFEIFER, M.
245 $aEfect of diferent surface?charged lamellar materials on swelling properties of nanocomposite hydrogels.$h[electronic resource]
260 $c2021
300 $a3311?3323
520 $aThis study investigated the efect of diferent surface-charged lamellar materials on the swelling and difusion properties of synthesized polyacrylamide-methylcellulose hydrogels (HG). Montmorillonite and thermally activated hydrotalcite (300 °C and 550 °C) were incorporated during the preparation of nanocomposite (NC) hydrogels. A series of NC hydrogels were prepared by varying the lamellar material content (1:1, 2:1 and 4:1). The results showed that the HG with hydrotalcite (550 °C) was strongly dependent on the ionic intensity, and that the swelling degree increased by 50%, 65% and 78% with reducing the hydrotalcite content at (1:1), (2:1) and (4:1), respectively. The water absorption capacity of HG containing montmorillonite or hydrotalcite (300 ºC) was slightly afected when the pH was decreased from 7 to 3. However, the pH variation from 7 to 10 increased the water absorption capacity of most HG, except those containing hydrotalcite (550 °C) at (2:1) and (4:1). The presence of lamellar nanoparticles in hydrogels made the polymer matrix more rigid, and less likely to absorb water. In contrast, HG with hydrotalcite (550 °C) at (2:1) and (4:1) showed anomalous behavior with an increase in their water absorption capacity. The results support that the developed NC-HG can be suitable candidate materials for controlled released applications
653 $aHydrogel
653 $aSwelling degree
700 1 $aANDRADE, F. A. C.
700 1 $aBORTOLLETTO-SANTOS, R.
700 1 $aAOUADA, F. A.
700 1 $aRIBEIRO, C.
773 $tJournal of Polymers and the Environment$gv. 29, 2021.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
