Now showing items 31-40 of 721
Biodegradation of polyurethane derived from castor oil
(Associação Brasileira de Polímeros, 2008-09-01)
The aim of this research was to study the biodegradation of a polymer derived from castor oil, which is a renewable, natural material that is a practical alternative for the replacement of traditional polyurethane foams. ...
Architecture and relevance of several strongly adhered biofilms over a polyester imide (PEI) surface
(Sociedade Brasileira de Microbiologia, 2003-11-01)
Um estudo microscópico foi considerado para analisar a eventual adesão de fungos sobre uma superfície de poliéster-imida presente em fios de cobre esmaltados. A microscopia eletrônica de varredura, permitiu observar nestes ...
Clinical and radiographic evaluation of a polyester prosthesis in dogs with cranial cruciate ligament rupture
(Universidade Federal de Santa Maria (UFSM), 2002-10-01)
Os achados clínicos e radiográficos após reparo intra-articular do ligamento cruzado cranial com prótese de poliéster, utilizando a técnica over-the-top modificada, foram avaliada em seis cães. Sete cirurgias foram realizadas ...
POLYMERIZATION BY PHASE TRANSFER CATALYSIS. 28. CONDENSATION POLYMERS DERIVED FROM A DIIODINE DIPHENOL-AMIDE
(Sociedad Chilena de Química, 2002)
Thermal degradation and fire resistance of unsaturated polyester, modified acrylic resins and their composites with natural fibres
The thermal degradation and fire resistance of different natural fibre composites were studied. Unsaturated polyester (UP) and modified acrylic resins (Modar) were used as matrix composites. The smoke emission of the ...
Electrospinning of novel biodegradable poly(ester urethane)s and poly(ester urethane urea)s for soft tissue-engineering applications
The development of biomimetic highly-porous scaffolds is essential for successful tissue engineering. Segmented poly(ester urethane)s and poly(ester urethane urea)s have been infrequently used for the fabrication of ...
Solid-state hydrolysis of postconsumer polyethylene terephthalate after plasma treatment
Plasma treatments were applied on the surface of postconsumer polyethylene terephthalate (PET) bottles to increase their wettability and hasten the subsequent hydrolysis process. Sixty-four treatments were tested by varying ...