Wyniki wyszukiwania dla: SYNTHESIS OF POLYURETHANES

• SYNTHESIS-STUTTGART

  Czasopisma

  ISSN: 0039-7881 , eISSN: 1437-210X

• Renewable Resources for Polyurethanes and Polyurethane Composites: A Review

  Publikacja

  • J. Haponiuk
  • A. Hejna
  • Ł. Piszczyk
  • J. Datta
  • K. Formela

  - Rok 2017

  Each year, more than two million tons of polyurethane is produced in the EU by reacting isocyanates with polyols made from fossil fuel. In addition, there are appreciable quantities of petroleum based functional additives applied in the industry nowadays for both polyols and polyurethane materials. It is therefore of key importance to develop sustainable economically viable polyols with enhanced functionalities, and thereby reducing...

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• Polyurethanes modified with natural polymers for medical application. I. Polyurethanes/ Chitosan and polyurethane/collagen.

  Publikacja

  • J. Kucińska-Lipka
  • I. Carayon
  • H. Janik

  - Polimery - Rok 2013

  For over three decades polyurethanes (PUR or PU) have been reported for application in a variety of medical devices. These polymers consist of hard and soft segments, which allow for more subtle control of their structure and properties. By varying the composition of the different segments, properties of PURcan be tuned up for use in many areas of medicine. Recently there is a great interest in modification of biomedical PUR with...

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• Polyurethanes modified with natural polymers for medical application. Part II. Polyurethane/gelatin, polyurethane/starch, polyurethane/cellulose

  Publikacja

  • J. Kucińska-Lipka
  • I. Carayon
  • H. Janik

  - Polimery - Rok 2014

  This paper is a literature overview of biomedical PUR modifications with natural polymers such as starch, cellulose and gelatin. Properties like biodegradability and biocompatibility of modified PUR cause that these materials may be used as wound dressings, tissue scaffolds, tissue implants and also vascular grafts.

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• Thermoplastic polyurethanes with glycolysate intermediates from polyurethane waste recycling

  Publikacja

  • T. Calvo-Correas
  • L. Ugarte
  • P. Jutrzenka Trzebiatowska
  • S. Rafael
  • J. Datta
  • M. Á. Corcueraa
  • A. Eceiza

  - POLYMER DEGRADATION AND STABILITY - Rok 2017

  The polyol is a major component in polyurethane formulations and therefore introducing to the formulation recycled polyol (obtained during decomposition process) allows decreasing the usage of pure petrochemical components. In this work, thermoplastic polyurethanes were prepared using various mixtures of a petrochemical macrodiol poly(ethylene-butylene adipate)diol (PEBA) and a recycled glycolysate intermediate, called glycolysate...

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• Thermal properties of polyurethanes synthesized using waste polyurethane foam glycolysates

  Publikacja

  • J. Datta
  • M. Rohn

  - JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY - Rok 2007

  W pracy przedstawiono wyniki analizy termicznej (DMTA i TG-FTIR) glikolizatów i otrzymanych z nich poliuretanów. Glikolizaty uzyskiwano w reakcji odpadowej pianki poliuretanowej z 1,6 heksametylenodiolem (HDO) przy różnym stosunku masowym pianki do HDO (1:1 - 10:1). Poliuretany syntezowano metodą dwuetapową z prepolimeru (diizocyjanian MDI + glikolizat), który przedłużano handlowym małocząsteczkowym glikolem.

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• Synthesis and characterisation of polyurethane elastomers with semi-products obtained from polyurethane recycling

  Publikacja

  • P. Jutrzenka Trzebiatowska
  • T. Calvo-Correas
  • A. Eceiza
  • J. Datta

  - EUROPEAN POLYMER JOURNAL - Rok 2016

  In this work polyurethane elastomers were synthesised by using different mixtures of a petrochemical and glycerolysate polyols and 4,4-diphenylmethane diisocyanate (MDI). Glycerolysate polyol was produced from polyurethane foam decomposition using crude glycerine as a decomposition agent. The structure and thermal properties of obtained semi-product were similar to the polyol used in the synthesis of original foam. Glycerolysate...

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• Synthesis and Investigation of Glycolysates and Obtained Polyurethane Elastomers

  Publikacja

  • J. Datta

  - JOURNAL OF ELASTOMERS AND PLASTICS - Rok 2010

  Scharakteryzowano proces glikolizy poprodukcyjnych odpadów poliuretanowych przeprowadzony przy użyciu glikolu heksametylenowego. Przedstawiono niektóre właściwości fizykochemiczne otrzymanych glikolizatów. Omówiono wyniki analizy termicznej, termomechanicznej oraz budowy chemicznej metodą FTIR zsyntetyzowanych elastomerów poliuretanowych. Właściwości mechaniczne zmierzono w warunkch statycznych przy użyciu uniwersalnej maszyny...

• Synthesis and characterization of novel aliphatic polyurethanes for tissue engineering applications

  Publikacja

  • G. Iga

  - Rok 2017

  Summarizing, in this thesis was described the synthesis of novel PUR system, which was obtained by using aliphatic diisocyanate (HDI), amorphous macrodiol (PEBA) and chain extender (BDO). This PUR system was established as suitable for TE purpose and successfully modified with AA, which as expected improved its biocompatibility. According to this, AA-modified HDI-based PURs is the PUR system ready for further studies including...

• SYNTHETIC METALS

  Czasopisma

  ISSN: 0379-6779