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Processing and characterization of PEI/PBT and PEI/PBT/PTFE high-performance polymer blends
(Doctorado en IngenieríaEscuela de IngenieríaMedellín, 2018)
Polymer blending emerged as an attractive strategy to obtain new materials with tailored properties from already existing ones. It has focused mainly on the development of blends from commercial polymers. Fewer works have ...
Um olhar sobre o ensino de matemática no ensino médio sob a influência das provas do PEIES
(Universidade Federal de Santa MariaBrasilUFSMCentro de Ciências Naturais e Exatas, 2010-08-31)
This work presents a bibliographic study on the relationship of Mathematics Education /
School / PEIES - Program of Access to Higher Education, Federal University of Santa Maria
– UFSM. Through this study, we sought to ...
PTFE as a toughness modifier of high-performance PEI/PBT blends: Morphology control during melt processing
(John Wiley and Sons Ltd, 2021-02-01)
High-performance PEI/PBT blends are brittle because of phase distribution and blends densification. New morphologies developed by adding PTFE to PEI matrix during melt processing favor the toughness improvement of PEI/PBT ...
Layer-by-layer films containing emodin or emodin encapsulated in liposomes for transdermal applications
(2018-02-01)
Dermal drug release systems are an important area of research because they can be applied to the skin in a non-invasive procedure using a lower concentration of drugs. In this study, we have developed two types of ...
Synergistic contribution on flame retardancy by charring production in high-performance PEI/PBT/PTFE ternary blends: The role of PTFE
(Wiley, 2021)
High-performance binary blends between poly(ether imide) (PEI) and flame-retardant poly(butylene terephthalate) (PBT) are modified with 5, 10, and 15 wt% of poly(tetrafluoroethylene) (PTFE) using a two-step melt-processing ...
“Futuro. Qual é o seu?” Um estudo sobre a relação ensino médio X PEIES a partir da fala docente em Santa Maria/RS
(Universidade Federal de Santa MariaBREducaçãoUFSMPrograma de Pós-Graduação em Educação, 2007-03-09)
This work presents a study on the relation High School versus PEIES - Program of Ingression to University of the Federal University of Saint Mary - UFSM, from speaks of
professors of the city of Mary Saint. By means of ...
Reseña. Tras la huella de los PEI en el laberinto de la cultura escolar. La utopía de los PEI en el laberinto escolar. Rafael Ávila Penagos y Marina Camargo Abello, COLCIENCIAS, CIUP, PIIE, Ediciones Antropos, 1999.
Jesús Ibáñez (1990) afirma, a propósito del texto El tiempo de las tribus de Michel Maffesoli, que “Los sociólogos sedentarios escriben in absentia. Desde el pasado si son de derechas. Desde el futuro si son de izquierdas.
Influência da temperatura no desempenho mecânico de compósitos PEI/fibras de vidro
(Associação Brasileira de Polímeros, 2009-01-01)
Os compósitos poliméricos vêm ganhando grande destaque devido aos avanços tecnológicos conquistados pelas indústrias, principalmente a aeroespacial. Estes avanços têm como uma de várias finalidades a obtenção de compósitos ...