Zobrazeno 1 - 10
of 100
pro vyhledávání: '"José A F, Gamelas"'
Autor:
Luís Alves, Solange Magalhães, Jorge F. S. Pedrosa, Paulo J. T. Ferreira, José A. F. Gamelas, Maria Graça Rasteiro
Publikováno v:
Gels, Vol 10, Iss 6, p 367 (2024)
Cellulose nanofibrils (CNFs) are particles with a high aspect ratio. Typically, chemically pre-treated CNFs (containing anionic or cationic charged groups) consist of long fibrils (up to 2 μm) with very low thickness (less than 10 nm). Derived from
Externí odkaz:
https://doaj.org/article/3e652ec85e4541868d92b18d29d5deff
Autor:
Ana P. S. Marques, Ricardo O. Almeida, Luís F. R. Pereira, Maria Graça V. S. Carvalho, José A. F. Gamelas
Publikováno v:
Polymers, Vol 16, Iss 9, p 1227 (2024)
Nanocelluloses have gained significant attention in recent years due to their singular properties (good biocompatibility, high optical transparency and mechanical strength, large specific surface area, and good film-forming ability) and wide-ranging
Externí odkaz:
https://doaj.org/article/b0c4a0541a8b41fcb87d1978ad4bbbe8
Publikováno v:
Frontiers in Chemistry, Vol 8 (2020)
In wastewater treatment, flocculation is a widely used solid/liquid separation technique, which typically employs a charged polymer, a polyelectrolyte (PEL). Polyelectrolytes features, such as charge type, charge density and molecular weight, are ess
Externí odkaz:
https://doaj.org/article/45e10b22cd2a456d977ba847bf786dce
Publikováno v:
Nanomaterials, Vol 11, Iss 6, p 1579 (2021)
The surface properties of two sepiolite samples and one palygorskite sample were compared using inverse gas chromatography (IGC). Samples were previously conditioned at appropriate temperatures for the removal of all zeolitic water. Dispersive (or Li
Externí odkaz:
https://doaj.org/article/05cc874c928c4fe78be46cc675f109bb
Autor:
Solange Magalhães, Adriana Moreira, Ricardo Almeida, Pedro Fernandes Cruz, Luís Alves, Carolina Costa, Cátia Mendes, Bruno Medronho, Anabela Romano, Maria da Graça Carvalho, José A. F. Gamelas, Maria da Graça Rasteiro
Publikováno v:
ACS Omega. 7:26005-26014
The selective extraction and recovery of different lignocellulosic molecules of interest from forestry residues is increasing every day not only to satisfy the needs of driving a society toward more sustainable approaches and materials (rethinking wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba611e57694d45b142e268c46f7f1c7e
https://doi.org/10.1021/acsomega.1c07380
https://doi.org/10.1021/acsomega.1c07380
Autor:
Kinga Grenda, José A. F. Gamelas, Julien Arnold, Lorenzo Pellizzer, Olivier J. Cayre, Maria G. Rasteiro
Publikováno v:
Polymers, Vol 13, Iss 1, p 25 (2020)
Modification of cellulosic-rich materials for the production of cellulose-based polyelectrolytes (PELs) can bring several benefits, such as high biodegradability and low or no toxicity, for numerous applications, when compared with the use of traditi
Externí odkaz:
https://doaj.org/article/4b7c1cc85bac4285825b1c70a4057d1c
Autor:
Eduardo Ferraz, Luís Alves, Pedro Sanguino, Julio Santarén, Maria G. Rasteiro, José A. F. Gamelas
Publikováno v:
Polymers, Vol 13, Iss 1, p 129 (2020)
Palygorskite is a natural fibrous clay mineral that can be used in several applications, for which colloidal stability in aqueous suspensions is a key point to improve its performance. In this study, methods of magnetic stirring, high-speed shearing,
Externí odkaz:
https://doaj.org/article/02be6b73571c4f798edefdee3512c79a
Publikováno v:
Minerals, Vol 10, Iss 9, p 779 (2020)
To allow the use of fibrous-like clays, as sepiolite, in different applications, their disaggregation and the formation of stable suspensions are crucial steps to enhance their performance significantly, e.g., in cellulose nanofibrils/clay composite
Externí odkaz:
https://doaj.org/article/4293bdd9a8cb4d1296cd03e5710b635b
Publikováno v:
Polymers, Vol 12, Iss 9, p 1964 (2020)
Dye invasion in wastewaters is undeniably one of the crucial environmental concerns in addition to the supplement of toxic synthetic chemical flocculants used for color removal using the conventional coagulation-flocculation process. With the aim to
Externí odkaz:
https://doaj.org/article/e92e3f384ebe472b82c8582d1621f1be
Autor:
Ana Ramos, Luis Francisco Angeli Alves, Maria G. Rasteiro, Paulo Ferreira, E. Potsi, José A. F. Gamelas, M. G. V. S. Carvalho, R.O. Almeida
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Wood from invasive tree species Acacia dealbata and Ailanthus altissima was used to produce high value-added nanocellulose. Firstly, bleached pulps were produced from the wood of these tree species after kraft cooking. Afterwards, the resultant pulps
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fc29509147470fa43324ea20d9b7c68
https://doi.org/10.1016/j.ijbiomac.2021.08.015
https://doi.org/10.1016/j.ijbiomac.2021.08.015