Enhanced dispersion of carbon nanotubes in hyperbranched polyurethane and properties of nanocomposites
- Authors
- Rana, Sravendra; Karak, Niranjan; Cho, Jae Whan; Kim, Young Ho
- Issue Date
- 10-Dec-2008
- Publisher
- IOP PUBLISHING LTD
- Citation
- NANOTECHNOLOGY, v.19, no.49
- Journal Title
- NANOTECHNOLOGY
- Volume
- 19
- Number
- 49
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/16750
- DOI
- 10.1088/0957-4484/19/49/495707
- ISSN
- 0957-4484
- Abstract
- Hyperbranched polyurethane (HBPU) nanocomposites with multi-walled carbon nanotubes (MWNTs) were prepared by in situ polymerization on the basis of poly(epsilon-caprolactone) diol as the soft segment, 4,4'-methylene bis(phenylisocyanate) as the hard segment, and castor oil as the multifunctional group for the hyperbranched structure. A dominant improvement in the dispersion of MWNTs in the HBPU matrix was found, and good solubility of HBPU-MWNT nanocomposites in organic solvents was shown. Due to the well-dispersed MWNTs, the nanocomposites resulted in achieving excellent shape memory properties as well as enhanced mechanical properties compared to pure HBPU.
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