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- Publications
- Influence
Montmorillonite as a component of polysulfone nanocomposite membranes
- P. Anadão, Laís Fumie Sato, H. Wiebeck, F. R. Valenzuela-Díaz
- Materials Science
- 1 March 2010
Nanocomposite membranes containing polysulfone (PSf) and sodium montmorillonite from Wyoming (MMT) were prepared by a combination of solution dispersion and the immersion step of the wet-phase… Expand
Determination of inorganic constituents and polymers in metallized plastic materials
- E. P. Soares, M. Saiki, H. Wiebeck
- Materials Science
- 1 March 2005
SummaryThis work presents results obtained in the analyses of metallized plastics by neutron activation analysis (NAA) and results of polymer identification by infrared spectroscopy (IR) and… Expand
Comparação de Técnicas FTIR de Transmissão, Reflexão e Fotoacústica na Análise de Poliamida-6, Reciclada e Irradiada
- M. C. Evora, O. Goncalez, R. C. Dutra, M. F. Diniz, H. Wiebeck, L. Silva
- Materials Science
- 2002
A comparative study involving transmission, reflection and photoacoustic FTIR techniques is presented with analysis of polyamide-6. The potential and limitations of these methods are investigated by… Expand
Nanocomposite Microcapsules from Powders of Polyhydroxybutyrate (PHB) and Smectite Clays
- Maria das Graças da Silva-Valenzuela, S. Wang, H. Wiebeck, F. R. Valenzuela-Díaz
- Materials Science
- 1 October 2010
Drug delivery systems involving microcapsules provide an attractive way to improve the performance of many chemical and biological substances. These systems may be used for several industrial… Expand
Uso da cinza da casca de arroz como carga em matrizes de poliamida 6 e poliamida 6.6
- W. P. Ferro, L. Silva, H. Wiebeck
- Materials Science
- 1 September 2007
This work evaluates the technical viability of the use of rice husk ash as filler in polyamide 6 and polyamide 6.6 which are one of the main engineering plastics with applications in several areas. A… Expand
Processing and Characterization of Composites Curing by Microwave Irradiation
- D. Kersting, H. Wiebeck, F. Esper
- Materials Science
- 1 September 2016
Correlação entre envelhecimento artificial e natural de poliestireno e poliestireno de alto impacto
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Using PLS, iPLS and siPLS linear regressions to determine the composition of LDPE/HDPE blends: A comparison between confocal Raman and ATR-FTIR spectroscopies
- Daniel José da Silva, H. Wiebeck
- Materials Science
- 1 September 2017
Abstract Polyethylenes can be distinguished from each other by branching degree and molar mass, which cause significant changes in their properties, rheological and thermal behaviors. However, the… Expand
Effects of gamma radiation on commercial food packaging films—study of changes in UV/VIS spectra
- E. A. B. Moura, A. Ortiz, H. Wiebeck, A. Paula, A.L.A Silva, L. Silva
- Materials Science
- 1 September 2004
Abstract The effects of gamma irradiation doses up to 100 kGy on the optical properties of different commercial packaging films were studied in this paper. The packaging films analyzed were:… Expand
Study of the influence of graphite content on polysulfone-graphite composite membrane properties
- P. Anadão, L. F. Sato, H. Wiebeck
- Materials Science
- Journal of Thermal Analysis and Calorimetry
- 1 December 2018
Techniques such as plasma treatment and electrophilic aromatic substitution are strategies commonly used to increase membrane hydrophilicity. We here suggest the addition of graphite (the contents of… Expand