Search Results - "Wiebeck Helio"

Deciphering gypsum reuse through green composites development and the effect of three different bioplasticizers on their properties by Colina, Grecia G., Souza, Alana G., Rosa, Derval S., da Silveira, Éder B., Valera, Ticiane S., Wiebeck, Hélio

Get full text

Atmospheric microplastic fallout in outdoor and indoor environments in São Paulo megacity by Amato-Lourenço, Luís Fernando, dos Santos Galvão, Luciana, Wiebeck, Hélio, Carvalho-Oliveira, Regiani, Mauad, Thais

“…Plastics are widely used by society, and their degradation into millimetre fragments, called microplastics (MPs), has become a global environmental threat to…”
Get full text

Applying confocal Raman spectroscopy and different linear multivariate analyses to sort polyethylene residues by da Silva, Daniel José, Parra, Duclerc Fernandes, Wiebeck, Hélio

“…[Display omitted] •Characterization and sorting of plastic waste by confocal Raman spectroscopy.•PCA multivariate analyses for classification of plastics in…”
Get full text

ATR-FTIR Spectroscopy Combined with Chemometric Methods for the Classification of Polyethylene Residues Containing Different Contaminants by da Silva, Daniel José, Wiebeck, Hélio

“…Low density polyethylene (LDPE) and high density polyethylene (HDPE) are the principal plastics present in solid plastic waste and are found out as the main…”
Get full text

Current options for characterizing, sorting, and recycling polymeric waste by da Silva, Daniel José, Wiebeck, Hélio

“…Several researches and technologies on polymer recycling have been driven and justified by the uncontrolled and crescent polymer waste generation in the world…”
Get full text

Critical steps for microplastics characterization from the atmosphere by dos Santos Galvão, Luciana, Fernandes, Emília Mori Sarti, Ferreira, Rafaela Reis, dos Santos Rosa, Derval, Wiebeck, Hélio

“…The microplastics found in many environments, whether in atmospheric, terrestrial, aquatic marine, or freshwater systems, result from exaggerated consumption…”
Get full text

Preliminary analysis to BIIR recovery using the microwave process by Landini, Liliane, de Araújo, Sumair Gouveia, Lugão, Ademar Benévolo, Wiebeck, Hélio

“…This paper shows the results of preliminary assessment to devulcanize and recover the bromobutyl rubber (BIIR) using the microwave process. In this work, a…”
Get full text

Greener waterborne epoxy coatings with optimized UV-resistance by Silva, Mauro Sergio da, Souza, Alana Gabrieli de, Rosa, Derval dos Santos, Valera, Ticiane Sanches, Wiebeck, Hélio

“…Abstract The UV-resistance performance of waterborne epoxy coatings with different aminic-curable substances was evaluated to solve the widely known problem of…”
Get full text

Analysis of selective fluorescence for the characterization of microplastic fibers: Use of a Nile Red-based analytical method to compare between natural and synthetic fibers by Galvão, Luciana S., Ferreira, Rafaela R., Fernandes, Emília M.S., Correia, Carla Almêda, Valera, Ticiane S., dos Santos Rosa, Derval, Wiebeck, Hélio

“…The scientific community has been focusing on studying and understanding the extent of damage caused by microplastics (MPs) to flora, fauna, and humans,…”
Get full text

CARS-PLS regression and ATR-FTIR spectroscopy for eco-friendly and fast composition analyses of LDPE/HDPE blends by da Silva, Daniel José, Wiebeck, Hélio

“…The composition estimate of LDPE/HDPE blends is still a challenge for the most polymer characterization techniques due to partial miscibility effects and…”
Get full text

Recycling Expanded Polystyrene with a Biodegradable Solvent to Manufacture 3D Printed Prototypes and Finishing Materials for Construction by Bartolomei, Suellen Signer, da Silva, Felipe Lopes Fonseca, de Moura, Esperidiana Augusta Barreto, Wiebeck, Hélio

“…The amount of plastic waste generated is causing damage to the environment, such as sea and soil pollution, and one of the alternatives for disposing of…”
Get full text

Montmorillonite as a component of polysulfone nanocomposite membranes by Anadão, Priscila, Sato, Laís Fumie, Wiebeck, Hélio, Valenzuela-Díaz, Francisco Rolando

“…Nanocomposite membranes containing polysulfone (PSf) and sodium montmorillonite from Wyoming (MMT) were prepared by a combination of solution dispersion and…”
Get full text

Influence of GRAFIM® content and the presence of silver nanoparticles on PSf composite membrane properties by Anadão, Priscila, Wiebeck, Hélio

“…Rheology assessment is an important tool to understand membrane process formation as well as membrane morphology and properties. Hence, by varying the GRAFIM®…”
Get full text

Study of mechanical properties of inner tubes exposed to gamma radiation by Scagliusi, Sandra Regina, Cardoso, Elizabeth Leite Carvalho, Esper, Fabio José, Lugão, Ademar Benevólo, Wiebeck, Helio

“…Abstract Due to the technical evolution of tires, currently most automotive tires do not have an inner tube. However, truck, motorcycle and bicycle tires still…”
Get full text

Tribology of natural Poly-Ether-Ether-Ketone (PEEK) under transmission oil lubrication by Andrade, Thiago Fontoura de, Wiebeck, Helio, Sinatora, Amilton

“…Abstract High performance polymeric materials such as poly-ether-ether-ketone (PEEK) are increasingly being used for challenging tribological applications in…”
Get full text

Effect of Virgin PP Substitution with Recycled Plastic Caps in the Manufacture of a Product for the Telephony Sector by de Sá Teles, Beatriz Arioli, Cunha, Isadora Luiza Clímaco, da Silva Neto, Manoel Lisboa, Wiebeck, Hélio, Valera, Ticiane Sanches, de Souza, Simara Silveira, de Oliveira Schmitt, Alfredo Felipe, Oliveira, Vinicius, Kulay, Luiz

“…This study investigated the effects of partial and total substitutions of fossil polypropylene (PP) for recycled plastic cap equivalents in the manufacture of…”
Get full text

Effect of surface finishing on friction and wear of Poly-Ether-Ether-Ketone (PEEK) under oil lubrication by Andrade, Thiago Fontoura de, Wiebeck, Helio, Sinatora, Amilton

“…Abstract The tribological properties of poly-ether-ether-ketone (PEEK) containing 30% of carbon fiber were studied in an oil-lubricated environment and…”
Get full text

Behavior of adhesion forces of the aqueous-based polychloroprene adhesive magnetically conditioned by Souza, Edith M. M., da Costa, Wanderley, Silva, Leonardo G. A., Wiebeck, Hélio

“…This research is an innovation proposal for magnetic conditioning of the aqueous-based polychloroprene contact adhesive with the purpose of increasing the…”
Get full text

Montmorillonite/carbon nanocomposites prepared from sucrose for catalytic applications by Anadão, Priscila, Hildebrando, Edemarino Araújo, Pajolli, Ivan Luiz Rocchetti, de Oliveira Pereira, Kleberson Ricardo, Wiebeck, Hélio, Valenzuela Díaz, Francisco Rolando

“…Sucrose was used to prepare montmorillonite/carbon nanocomposites by calcination in a reduced atmosphere. The aim was to investigate the changes derived from…”
Get full text

Biodegradable Poly(3-hydroxybutyrate) Nanocomposite by Ohashi, Eiji, Drumond, Walker Soares, Zane, Nicholas Picoli, de Faria Barros, Pedro Wang, Lachtermacher, Marly Grinapel, Wiebeck, Hélio, Wang, Shu Hui

“…This work seeks bringing a technological and social contribution by searching blends and composites of poly(3-hydroxybutyrate) (PHB) and polyethylene widely…”
Get full text