Applications of quantitative image analysis to the description of the morphology of hybrid polyurethane with modified boehmite

Piotr Zapart ,  Joanna Ryszkowska ,  Magdalena Jurczyk-Kowalska 

Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland


Study of structure property relationships in segmented polyurethanes (PUR) and its composites has acquired importance due to the broad range of PUR applications. This paper presents the application of quantitative image analysis to the description of morphological properties of modified boehmite and hybrid polyurethane. This analysis was used inter alia in the description of internal structure images and surface layer of materials as well as in description of their fractures. Fracture images of boemithe, and cut surface of polyurethane were obtained using high-resolution electron microscopy technique and atomic force microscopy. Quantitative analysis of the mechanical change images of fracture structure obtained with that technique allowed us to explain the mechanism of the changes and the thermal properties of polyurethane composites, as well as allowed us to determine relationships between structure characteristics and properties of examined materials.

Stereology methods were also found to be useful in comparative analysis of polyurethane composites structure and structure of boehmite and products of its modification. Ingredients used for PUR synthesis were: poly(ethylene adipate) (PEA) mol.wt 2000, 4,4’diphenylmethane diisocyanate (MDI), glycol (G1), glycerine (G2). The filler was added to PUR matrix in 3,5% wt. Synthesis was performed in one-shot process. Polyurethanes with PEA:MDI:G1:G2 molar ratio 6:9:2:1 were synthesized. The curing reaction was performed in the temperature of 120ºC for 16 hours.

The mechanical and thermal properties of polyurethane boehmite composites were investigated.

The author thank the Prof Z.Florjańczyk and Mrs A. Wolak for supplying us modified boemite.

This research was financed by Polish State Committee for Scientific Research (as research projects PBZ-KBN-095/T08/2003 and 3T08A07428).

Related papers
  1. Effect of addition of nanosilica on the properties of ureaurethane nanocomposites
  2.  A  degradable and highly porous polyurethane scaffolds for bone tissue engineering
  3. Properties of transparent elastomer nanocomposites (polyurethane/ ZrO2:Eu3+) as materials for optoelectronic application
  4. Fire retardant polyurethane elastomers/aluminophosphorate nanocomposites for higher temperature application
  5. Bone tissue engineered product based on human bone derived cells and polyurethane scaffold
  6. Thermal and mechanical properties of polyurethane nanocomposites with modified nanosilica
  7. Optimization of polyurethane structure as the potential materials for bone tissue engineering applications
  8. Polyurethane nano-composites with luminescence properties for optics and optoelectronics applications.
  9. Structure and properties of polyurethane/YAG:Tb3+ nano-composites with luminescence properties
  10. Structure and thermal properties of epoxy resins nano-composites with flame retardants
  11. The influence of ZrO2 containing 10% Eu 3+ on the polyurethane hard domain structure of nano-composites with luminescence properties
  12. An influence of boehmite modification on the dispersion in the polyurethane matrix
  13. Applications of quantitative image analysis to the description of the morphology of polyurethane/carbon nanotubes composites
  14. Polyurethane coating for protecting concrete floors using parquetry with fillers originating from recycling
  15. Thermal stability of hybrid polyurethane and modified boehmite
  16. Properties of hybrid polyurea-nitryle-urethanes
  17. Applications of quantitative image analysis to the description of the morphology of hybrid polyurea-nitryle-urethanes
  18. Effect of diisocyanate chemical structure on biocompatibility of segmented polyurethanes
  19. Polyurethane-boehmite nanocomposite

Presentation: poster at E-MRS Fall Meeting 2005, Symposium E, by Piotr Zapart
See On-line Journal of E-MRS Fall Meeting 2005

Submitted: 2005-06-09 08:26
Revised:   2009-06-07 00:44
© 1998-2018 pielaszek research, all rights reserved Powered by the Conference Engine