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Solid"green" polyurethanes based on rapeseed oil polyol and modified withglycerol and microcellulose
(Scrivener Publishing, 2016-08-01)
Solid bio-based polyurethanes (PUs) were prepared from a rapeseed oil-based polyol (ROPO) synthesized by epoxidation reaction followed by oxirane ring-opening with diethylene glycol. The reference material was modified by ...
Effect of Nanotube Functionalization on the Properties of Single-Walled Carbon Nanotube/Polyurethane Composites
(John Wiley & Sons Inc, 2007-12)
A commercially available aliphatic thermoplastic polyurethane formulated with a methylene bis(cyclohexyl) diisocyanate hard segment and a poly(tetramethylene oxide) soft segment and chain-extended with 1,4-butanediol was ...
Electrospun Nanofibrous Scaffolds Of Segmented Polyurethanes Based On Peg, Plla And Ptmc Blocks: Physico-chemical Properties And Morphology
(ELSEVIER SCIENCE BVAMSTERDAM, 2015)
Validation of an experimental polyurethane model for biomechanical studies on implant supported prosthesis - tension tests
(Faculdade De Odontologia De Bauru - USP, 2011)
OBJECTIVES: The complexity and heterogeneity of human bone, as well as ethical issues, frequently hinder the development of clinical trials. The purpose of this in vitro study was to determine the modulus of elasticity of ...
Thermal and mechanical characteristics of polyurethane/curaua fiber composites
(SPRINGER, 2009)
Polyurethane composites reinforced with curaua fiber at 5, 10 and 20% mass/mass proportions were prepared by using the conventional melt-mixing method. The influence of curaua fibers on the thermal behavior and polymer ...
Polyurethane networks from pentaerythritol-modified castor oil and lysine polyisocyanates: synthesis, mechanical, and thermal properties and in vitro degradationPoliuretanos obtenidos a partir de aceite de higuerilla modificado y poli-isocianatos de lisina: síntesis, propiedades mecánicas y térmicas y degradación in vitro
(Química Nova, 2014-08-11)
Biodegradable polyurethanes (PUR) were prepared from polyols derived from castor oil by transesterification of pentaerythritol-modified castor oil and lysine polyisocyanates (LDI and LTI). The polyurethanes obtained were ...
Flexural behavior of Sisal/Castor oil-Based Polyurethane and Sisal/Phenolic Composites
(ABM, ABC, ABPol, 2012-04-01)
Natural fibers used as reinforcement of polymeric composites are interesting research subjects in polymer technology. Nowadays, these materials are being considered as a way to reinforce timber structures improvement. ...
Flexural behavior of Sisal/Castor oil-Based Polyurethane and Sisal/Phenolic Composites
(ABM, ABC, ABPol, 2012-04-01)
Natural fibers used as reinforcement of polymeric composites are interesting research subjects in polymer technology. Nowadays, these materials are being considered as a way to reinforce timber structures improvement. ...
Polyurethane Foam Reinforced with Fibers Pineaplle Crown Biocomposites for Sorption of Vegetable Oil
(2020-08-01)
The concern in reducing the environmental impacts caused by human interference is increasing. Thus, the objective of this study was to generate a sustainable solution for sorption of vegetable oil. It was developed and ...