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Polyurethane foam/silica chemical hybrids for shape memory effects

Published online by Cambridge University Press:  23 October 2012

S.M. Kang ,
M.J. Kim ,
S.H. Kwon ,
H. Park ,
H.M. Jeong  and
B.K. Kim
S.M. Kang
Affiliation:
Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea
M.J. Kim
Affiliation:
Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea
S.H. Kwon*
Affiliation:
Department of Naval Architecture and Ocean Engineering, Pusan National University, Busan 609-735, Korea
H. Park
Affiliation:
Global Core Research Center for Ships and Offshore Plants, Pusan National University, Busan 609-735, Korea
H.M. Jeong
Affiliation:
Department of Chemistry, University of Ulsan, Ulsan 680-749, Korea
B.K. Kim*
Affiliation:
Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea
*
a)Address all correspondence to these authors. e-mail: shkwon@pnu.edu
b)e-mail: bkkim@pnu.edu
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Abstract

The isocyanate-functionalized silica nanoparticles were chemically incorporated into the polyurethane (PU) during the synthesis of flexible PU foam from polypropylene glycol and toluene diisocyanate following the one-shot method with water as the blowing agent. Chemical incorporations of silica nanoparticles augmented hardness, initial modulus, and strength for tensile and compression loading. As results, shape fixity, shape recovery, and strain energy storage significantly increased with reduced hysteresis loss. It was found that the chemically incorporated silica particles effectively reinforce the PUs with improved dispersion and act as multifunctional cross-links, elastic energy storage, and relaxation retarder, which are beyond the conventional reinforcing filler. The maximum increases of dynamic properties and shape memory performances with 2% silica are an indication that the chemical incorporation is also limited by particle aggregations, though it appears at higher content than the simple blend.

Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 22 , 22 November 2012 , pp. 2837 - 2843
Copyright
Copyright © Materials Research Society 2012

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References

REFERENCES

1.Madbouly, S.A. and Lendlein, A.: Shape-memory polymer composites. Adv. Polym. Sci. 226, 41 (2010).CrossRefGoogle Scholar
2.Huang, C.M., Wei, K.H., Jeng, U.S., and Sheu, H.S.: Pseudo-single-crystalline self-assembled structure formed from hydrophilic CdSe and hydrophobic Au nanoparticles in the polystyrene and poly(4-vinylpyridine) blocks, respectively, of a polystyrene-b-poly(4-vinylpyridine) diblock copolymer. Macromolecules 41, 6876 (2008).CrossRefGoogle Scholar
3.Chen, W.F., Wu, J.S., and Kuo, P-L.: Poly(oxyalkylene)diamine-functionalized carbon nanotube/perfluorosulfonated polymer composites: Synthesis, water state, and conductivity. Chem. Mater. 20, 5756 (2008).CrossRefGoogle Scholar
4.Okumura, Y., Oi, C., Sakamoto, W., and Yogo, T.: Synthesis of SrTiO3 nanoparticle/polymer composite film using direct current field. J. Mater. Res. 23, 127 (2008).CrossRefGoogle Scholar
5.Lance, M.J., Hsueh, C-H., Ivanov, I.N., and Geohegan, D.B.: Reorientation of carbon nanotubes in polymer matrix composites using compressive loading. J. Mater. Res. 20, 1026 (2005).CrossRefGoogle Scholar
6.Kelly, A.: Composites in context. Compos. Sci. Technol. 23, 171 (1985).CrossRefGoogle Scholar
7.Thostenson, E.T., Li, C., and Chou, T.W.: Nanocomposites in context. Compos. Sci. Technol. 65, 491 (2005).CrossRefGoogle Scholar
8.Fabrizio, Q., Loredana, S., and Anna, S.E.: Shape memory epoxy foams for space applications. Mater. Lett. 69, 20 (2012).CrossRefGoogle Scholar
9.Jang, M.K., Hartwig, A., and Kim, B.K.: Shape memory polyurethanes cross-linked by surface modified silica particles. J. Mater. Chem. 19, 1166 (2009).CrossRefGoogle Scholar
10.Jung, D.H., Jeong, H.M., and Kim, B.K.: Organic–inorganic chemical hybrids having shape memory effect. J. Mater. Chem. 20, 3458 (2010).CrossRefGoogle Scholar
11.Bae, C.Y., Park, J.H., Kim, E.Y., Kang, Y.S., and Kim, B.K.: Organic–inorganic nanocomposite bilayers with triple shape memory effect. J. Mater. Chem. 21, 11288 (2011).CrossRefGoogle Scholar
12.Lee, S.H., Kim, J.W., and Kim, B.K.: Shape memory polyurethanes having crosslinks in soft and hard segments. Smart Mater. Struct. 13, 1345 (2004).CrossRefGoogle Scholar
13.Aneja, A. and Wilkes, G.L.: On the issue of urea phase connectivity in formulations based on molded flexible polyurethane foams. J. Appl. Polym. Sci. 85, 2956 (2002).CrossRefGoogle Scholar
14.Kaushiva, B.D. and Wilkes, G.L.: Uniaxial orientation behavior and consideration of the geometric anisotropy of polyurea hard domain structure in flexible polyurethane foams. Polymer 41, 6987 (2000).CrossRefGoogle Scholar
15.Kaushiva, B.D., McCartney, S.R., Rossny, G.R., and Wilkes, G.L.: Surfactant level influences on structure and properties of flexible slabstock polyurethane foams. Polymer 41, 285 (2000).CrossRefGoogle Scholar
16.Lamba, N.M.K., Woodhouse, K.A., and Cooper, S.L.: Polyurethanes in Biomedical Applications (CRC Press, Boston, MA, 1998).Google Scholar
17.Neff, R., Adedeji, A., Macosko, C.W., and Ryan, A.J.: Urea hard segment morphology in flexible polyurethane foam. J. Polym. Sci., Part B: Polym. Phys. 36, 573 (1998).3.0.CO;2-Q>CrossRefGoogle Scholar
18.Tobushi, H., Okumura, K., Endo, M., and Hayashi, S.: Thermomechanical properties of polyurethane-shape memory polymer foam. J. Intell. Mater. Syst. Struct. 12, 283 (2001).CrossRefGoogle Scholar
19.Tobushi, H., Matsui, R., Hayashi, S., and Shimada, D.: The influence of shape-holding conditions on shape recovery of polyurethane-shape memory polymer foams. Smart Mater. Struct. 13, 881 (2004).CrossRefGoogle Scholar
20.Liu, C., Qin, H., and Mather, P.T.: Review of progress in shape-memory polymers J. Mater. Chem. 17, 1543 (2007).CrossRefGoogle Scholar