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Rigid polyurethane foams reinforced with disilanolisobutyl POSS: Synthesis and properties

Rigid polyurethane foams reinforced with disilanolisobutyl POSS: Synthesis and properties This work reports the synthesis of rigid polyurethane (PU) foams modified by disilanolisobutyl polyhedral oligomeric silsesquioxane (DSIPOSS). This open‐cage nanostructure silsesquioxane has 2 hydroxyl groups and therefore can be chemically built directly in the PU backbone to form hybrid polyurethane‐POSS foam. Synthesis procedure using polymeric 4,4′‐diphenylmethane diisocyanate, polyetherol, and DSIPOSS has been elaborated, and the influence of POSS on the cell structure, closed cell content, apparent density, thermal conductivity, and compression strength of the rigid polyurethane composites has been evaluated. The hybrid composite foams containing 1.5 and 2.0 wt% DSIPOSS showed a reduced number of cells and an increased average area of foam cells in comparison with the unmodified PU, while the addition of 0.5wt% of DSIPOSS causes an increase in the number of cells of the foam as compared with the reference and thus a reduction in the average area of cells. X‐ray microtomography provided data on the porous structure of polyurethane hybrid materials, including reduction of the pore surface area. Scanning electron microscopy and energy‐dispersive X‐ray spectroscopy analysis revealed a good homogenization of DSIPOSS in polyurethane matrix. Thermogravimetric analysis results have shown that incorporation of POSS nanoparticles into PU foam does not significantly change the degradation process. The compressive strength of PUF‐POSS hybrids in the direction parallel and perpendicular to the direction of foam rise is greater than the strength of the reference foam already for the lowest DSIPOSS content. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Polymers for Advanced Technologies Wiley

Rigid polyurethane foams reinforced with disilanolisobutyl POSS: Synthesis and properties

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Publisher
Wiley
Copyright
Copyright © 2018 John Wiley & Sons, Ltd.
ISSN
1042-7147
eISSN
1099-1581
DOI
10.1002/pat.4296
Publisher site
See Article on Publisher Site

Abstract

This work reports the synthesis of rigid polyurethane (PU) foams modified by disilanolisobutyl polyhedral oligomeric silsesquioxane (DSIPOSS). This open‐cage nanostructure silsesquioxane has 2 hydroxyl groups and therefore can be chemically built directly in the PU backbone to form hybrid polyurethane‐POSS foam. Synthesis procedure using polymeric 4,4′‐diphenylmethane diisocyanate, polyetherol, and DSIPOSS has been elaborated, and the influence of POSS on the cell structure, closed cell content, apparent density, thermal conductivity, and compression strength of the rigid polyurethane composites has been evaluated. The hybrid composite foams containing 1.5 and 2.0 wt% DSIPOSS showed a reduced number of cells and an increased average area of foam cells in comparison with the unmodified PU, while the addition of 0.5wt% of DSIPOSS causes an increase in the number of cells of the foam as compared with the reference and thus a reduction in the average area of cells. X‐ray microtomography provided data on the porous structure of polyurethane hybrid materials, including reduction of the pore surface area. Scanning electron microscopy and energy‐dispersive X‐ray spectroscopy analysis revealed a good homogenization of DSIPOSS in polyurethane matrix. Thermogravimetric analysis results have shown that incorporation of POSS nanoparticles into PU foam does not significantly change the degradation process. The compressive strength of PUF‐POSS hybrids in the direction parallel and perpendicular to the direction of foam rise is greater than the strength of the reference foam already for the lowest DSIPOSS content.

Journal

Polymers for Advanced Technologies – Wiley

Published: Jan 1, 2018

Keywords: ; ; ; ;

References

  • Rigid polyurethane foams modified with selected layered silicate nanofillers
    Danowska, M; Piszczyk, Ł; Strankowski, M; Gazda, M; Haponiuk, JT
  • The Polyurethanes Book
    Randall, D; Lee, S
  • Polyurethane/clay nanocomposites foams: processing, structure and properties
    Cao, X; Lee, LJ; Widya, T; Macosko, C
  • Fabrication and characterization of functional graded polyurethane foam (FGPUF)
    Esmailzadeh, M; Manesh, HD; Zebarjad, SM
  • Szycher's Handbook of Polyurethanes
    Szycher, M
  • Nanodispersions of carbon nanofiber for polyurethane foaming
    Harikrishnan, G; Singh, SN; Kiesel, E; Macosko, CW
  • Nano‐hybrid polymers containing polyhedral oligosilsesquioxanes (POSS)
    Janowski, B; Pielichowski, K
  • Polyurethane foam and fire safety
    Hirschler, MM
  • Mechanical properties of rigid polyurethane composites reinforced with surface treated ultrahigh molecular weight polyethylene fibers
    Meng, L; Li, W; Ma, R; Huang, M; Cao, Y; Wang, J
  • Morphology and properties of thermoplastic polyurethane nanocomposites incorporating hydrophilic layered silicates
    Finnigan, B; Martin, D; Halley, P; Truss, R; Campbell, K
  • Synthesis of Na+‐montmorillonite/amphiphilic polyurethane nanocomposite via bulk and coalescence emulsion polymerization
    Kim, JY; Jung, WC; Park, KY; Suh, KD
  • Polyurethane foam‐clay nanocomposites: nanoclays as cell openers
    Harikrishnan, G; Patro, TU; Khakhar, DV
  • Rigid polyurethane‐clay nanocomposite foams: preparation and properties
    Mondal, P; Khakhar, DV
  • Fabrication, synthesis and mechanical characterization of nanoparticles infused polyurethane foams
    Mahfuz, H; Rangari, VK; Islam, MS; Jeelani, S
  • New developments in chemical modification of fire‐safe rigid polyurethane foams
    Zatorski, W; Brzozowski, Z; Kolbrecki, A
  • Introduction to Hybrid Materials
    Kickelbick, G
  • Cardiovascular application of polyhedral oligomeric silsesquioxane nanomaterials: a glimpse into prospective horizons
    Ghanbari, H; Mel, A; Seifalian, AM
  • Designed hybrid organic‐inorganic nanocomposites from functional nanobuilding blocks
    Sanchez, C; Soler‐Illia, GJDA; Ribot, F; Lalot, T; Mayer, CR; Cabuil, V
  • Thermo(oxidative) stability of novel polyurethane/POSS nanohybrid elastomers
    Janowski, B; Pielichowski, K
  • Direct and indirect effects of POSS on the molecular mobility of polyurethanes with varying segment Mw
    Raftopoulos, KN; Janowski, B; Apekis, L; Pissis, P; Pielichowski, K
  • POSS along the hard segments of polyurethane. Phase separation and molecular dynamics
    Raftopoulos, KN; Jancia, M; Aravopoulou, D; Hebda, E; Pielichowski, K; Pissis, P
  • Polyurethane networks nanoreinforced by polyhedral oligomeric silsesquioxane
    Liu, H; Zheng, S
  • Novel hybrid polyurethane/POSS materials via bulk polymerization
    Przadka, D; Jeczalik, J; Andrzejewska, E
  • Nanoclay filled soy-based polyurethane foam
    Liang, K; Shi, SQ
  • Microstructural organization of three‐phase polydimethylsiloxane‐based segmented polyurethanes
    Hernandez, R; Weksler, J; Padsalgikar, A; Runt, J
  • Reduced phase separation and slowing of dynamics in polyurethanes with three‐dimensional POSS‐based cross‐linking moieties
    Raftopoulos, KN; Koutsoumpis, S; Jancia, M
  • Synthesis and morphology of rigid polyurethane foams with POSS as pendant groups or chemical crosslinks
    Hebda, E; Ozimek, J; Raftopoulos, KN
  • Practical cone‐beam algorithm
    Feldkamp, LA; Davis, LC; Kress, JW
  • Derivation of accurate glass transition temperatures by differential scanning calorimetry
    Richardson, MJ; Savill, NG
  • Preparation of starch‐based polyurethane films and their mechanical properties
    Kim, D‐H; Kwon, O‐J; Yang, S‐R; Park, J‐S
  • Materiały poliuretanowe
    Prociak, A; Rokicki, G; Ryszkowska, J
  • Polyurethane/polyhedral oligomeric silsesquioxane shape memory nanocomposites with low trigger temperature and quick response
    Gu, S‐Y; Jin, S‐P; Liu, L‐L
  • Trisilanolisobutyl POSS/polyurethane hybrid composites: preparation, WAXS and thermal properties
    Pan, R; Shanks, R; Kong, I; Wang, L
  • Synthesis and characterization of poly(dimethylsiloxane‐urethane) nanocomposites: effect of (in)completely condensed silsesquioxanes on thermal, morphological, and mechanical properties
    Madhavan, K; Gnanasekaran, D; Reddy, BSR
  • Polyurethane foams chemically reinforced with POSS—thermal degradation studies
    Pagacz, J; Hebda, E; Michałowski, S; Ozimek, J; Sternik, D; Pielichowski, K
  • Thermal degradation characteristics of rigid polyurethane foam and the volatile products analysis with TG‐FTIR‐MS
    Jiao, L; Xiao, H; Wang, Q; Sun, J
  • Thermal stability and flame retardancy of polyurethanes
    Chattopadhyay, DK; Webster, DC