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Now showing items 11-20 of 30
Estudo da influência de cargas minerais e amido na biodegradação do PLA
(Universidade Federal de São Carlos, 2010-05-31)
Fossile fuel-produced plastics, once consumed and incorrectly
discharged into the environment, will end up as short-term non-degradable
residues and will contribute to global pollution. For this reason, the use of
polymers ...
Processamento sol-gel de pós bioativos vítreos e cristalinos
(Universidade Federal de São Carlos, 2010-03-19)
In recent years, the sol-gel process has been increasingly used in the preparation of glasses and glass-ceramics with biomedical applications. Although the precursors used in this synthesis methodology are a very important ...
Análise da superfície de porcelanatos polidos por meio de microscopia de força atômica
(Universidade Federal de São Carlos, 2010-05-24)
The porcelain stoneware tile is a ceramic product that has presented a great increase on production, since it had excellent technical properties and raised aesthetic performance. To improve its aesthetic characteristics, ...
Concretos refratários avançados com alto teor de carbono
(Universidade Federal de São Carlos, 2010-03-12)
Refractory castables in the Al2O3-SiO2-SiC-C system are applied in the iron making process, including runners for molten slags and metals. Over the past years, several attempts to increase the carbon content of these ...
Análise comparativa de fadiga mecânica em compósitos de polipropileno com talco e com nanoargila
(Universidade Federal de São Carlos, 2010-05-17)
Talc is a well known lamellar mineral filler much used for mechanical reinforcement of polypropylene (PP) composites. Mineral nanoclay is also a lamellar filler that is gaining much interest due to its reinforcement effect ...
Preparação de nanofibras de celulose a partir de fibras de curauá para desenvolvimento de nanocompósitos poliméricos com EVA
(Universidade Federal de São Carlos, 2010-03-10)
The objective of the current project was the obtainment of cellulose nanofibers from curaua fibers and their application on the development of polymeric nanocomposites with EVA. A study of cellulose extraction according ...
Utilização da borracha natural no desenvolvimento de elastômeros termoplásticos
(Universidade Federal de São Carlos, 2010-05-28)
Dynamic vulcanization is a process of vulcanization of an elastomer during melt mixing with a thermoplastic. This process results in an elastomeric alloy material with the properties of a conventional thermoset rubber, but ...
Análise estrutural de filmes finos de hematita produzidos por spin-coating para geração de hidrogênio
(Universidade Federal de São Carlos, 2010-08-06)
Water photolysis at semiconductors is a clean and renewable method for solar energy conversion into hydrogen fuel. Hematite (-Fe2O3) thin films have been presented as a promissory material for water photolysis due ...
Estudo da oxidação superficial do copolímero propileno/etileno durante o tratamento corona e sua influência no comportamento de termosoldagem
(Universidade Federal de São Carlos, 2010-06-23)
Different ethylene-propylene copolymers (Ziegler-Natta and Metallocene) were exposed to corona discharge and analyzed by spectroscopic, morphological and fractionation techniques. Effects of different treatment configurations ...
Tenacificação de poli(ftalamida) (PPA) através de nanocompósitos com carbonato de cálcio e de blendas com copolímero estireno/etileno-butileno/estireno (SEBS)
(Universidade Federal de São Carlos, 2010-05-20)
This project aims the toughening of a high performance thermoplastic polyphthalamide (PPA). PPA resins is a good choice for special applications where the conditions are more severe than the ones an engineering thermoplastic ...