Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Luiz Cláudio de Santa Maria"'
Autor:
Simone Simplício, Luiz Cláudio de Santa Maria, Marcos Antônio da Silva Costa, Elizabete Fernandes Lucas, Yure Gomes de Carvalho Queirós, Luiz Rodrigo da Silva Marques, Luciana da Cunha Costa, Wang Shu Hui, Manoel Ribeiro Silva
Publikováno v:
Polímeros, Vol 23, Iss 5, Pp 590-596 (2013)
Magnetic composites have a wide range of potential technological applications; however the evaluation of this material for extraction of phenolic compounds has not been sufficiently studied. Due to its high toxicity and solubility the removal of phen
Externí odkaz:
https://doaj.org/article/f45dc8100d6e4ff290e95254cf7c1566
Autor:
Aline S. S. Valle, Luciana C. Costa, Mônica R. C. Marques, Camila L. P. Silva, Luiz Cláudio de Santa Maria, Fábio Merçon, Alcino Palermo de Aguiar
Publikováno v:
Química Nova, Vol 34, Iss 4, Pp 577-583 (2011)
We report the development of two copolymers based on 2-vinylpyridine, styrene and divinylbenzene (2Vpy-Sty-DVB) with different porosity degrees. The copolymers were subsequently quaternized with methyl iodide. To prepare charge transfer complexes, th
Externí odkaz:
https://doaj.org/article/03437cbefa884c6aa470b36bfaf642ee
Autor:
Luciana Cunha Costa, Maria Aparecida Larrubiua Granado Moreira Rodrigues Mandu, Luiz Claudio de Santa Maria, Mônica Regina da Costa Marques
Publikováno v:
Polímeros, Vol 25, Iss 4, Pp 414-423 (2015)
ResumoCopolímeros reticulados à base de divinilbenzeno vêm sendo extensivamente empregados como suportes de catalisadores e complexantes de íons metálicos, adsorventes de compostos orgânicos e fases estacionárias em separações cromatográfic
Externí odkaz:
https://doaj.org/article/eacd747b086d496f8503b82791caddf7
Autor:
Flavio S. Souza, Marcos A. S. Costa, Luiz Claudio de Santa Maria, Ivana L. Mello, Manoel R. Silva, Shu H. Wang
Publikováno v:
Polímeros, Vol 23, Iss 1, Pp 82-90 (2013)
Neste trabalho, foram sintetizados copolímeros à base de estireno (STY), divinilbenzeno (DVB) e metacrilato de metila (MMA) com propriedades magnéticas pela técnica de polimerização em suspensão. Os copolímeros foram caracterizados quanto a s
Externí odkaz:
https://doaj.org/article/d013f78a125647a4a5b8b633d174f61a
Autor:
Luis Carlos Ferreira Jr., Marcos A. S. Costa, Luiz Claudio de Santa Maria, Fernanda M. B. Coutinho, Pedro I. C. Guimarães
Publikováno v:
Química Nova, Vol 27, Iss 6, Pp 925-933 (2004)
This review deals with the homo- and copolymerization of styrene with nickel catalysts. The catalytic activity, polymer stereoregularity, polymer molecular weight and polydispersity are dependent upon nickel ligands and reaction parameters. Catalysts
Externí odkaz:
https://doaj.org/article/02dec51c783e441a965764a9c6f371e9
Autor:
Thaís H. S. Costa, Marcos A. S. Costa, Luiz Claudio de Santa Maria, Fernanda M. B. Coutinho, Neusa M. T. Pires
Publikováno v:
Química Nova, Vol 20, Iss 1, Pp 93-98 (1997)
The Ziegler-Natta catalyst and the polymerization thereof are systems which require careful handling and special treatment of chemicals. In spite of the use of inert atmosphere and dry chemicals, some Ziegler-Natta systems may present low activities
Externí odkaz:
https://doaj.org/article/5ae4572bce3a42d3bdc8e326cf0c8456