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  • 1
    Electronic Resource
    Electronic Resource
    Preparation and Characterization of Multiwalled Carbon Nanotube/Poly(ε-Caprolactone) Composites via In Situ Polymerization (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 124-126 (June 2007), p. 1133-1136 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Poly(ε-caprolactone)/multiwalled carbon nanotube (PCL/MWCNT) composites withdifferent MWCNT contents were successfully prepared by in situ bulk polymerization, which couldmake them good competitors for commodity materials such as general purpose plastics, whileallowing them to completely retain their biodegradability. The mechanical properties of thePCL/MWCNT composites were effectively increased due to the incorporation of the MWCNTs. Thecomposites were characterized using scanning electron microscopy, in order to obtain information onthe dispersion of the MWCNTs in the polymeric matrix. In the case where 0.5 wt% of MWCNTs weredispersed in the matrix, the strength and modulus of the composite increased by 23% and 71%,respectively. In addition, the dispersion of the MWCNTs in the PCL matrix resulted in a substantialdecrease in the electrical resistivity of the composites being observed as the MWCNTs loading wasincreased from 0 wt% to 0.5 wt%
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.124-126.1133.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Characterization of Polycarbonate/Multiwalled Carbon Nanotube Composites (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 326-328 (Dec. 2006), p. 1829-1832 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Polycarbonate/multiwalled carbon nanotubes (PC/MWNT) nanocomposites withdifferent contents of MWNT were successfully prepared by melt compounding. The mechanicalproperties of the PC/MWNT nanocomposites were effectively increased due to the incorporation ofMWNTs. The composites were characterized using scanning electron microscopy in order to obtainthe information on the dispersion of MWNT in the polymeric matrix. In case of 0.3 wt% of MWNTin the matrix, strength and modulus of the composite increased by 30% and 20%, respectively. Inaddition, the dispersion of MWNTs in the PC matrix resulted in substantial decrease in the electricalresistivity of the composites as the MWNTs loading was increased from 1.0 wt% to 1.5 wt%
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.326-328.1829.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation of Biodegradable Nanocomposites by Incorporation of Functionalized Carbon Nanotubes (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 326-328 (Dec. 2006), p. 1785-1788 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Polymeric carbon nanotube composites constitute one of the most promising alternativesto conventional filled polymers. The dispersion of nanometer-sized carbon nanotubes in a polymermatrix markedly improves its physical properties. This approach can also be applied tobiodegradable synthetic aliphatic polyesters such as poly(L-lactic acid) (PLLA), which has beenreceiving an increasing amount of attention due to environmental concerns. In this study, themechanical properties of PLLA were enhanced by the incorporation of a small amount of carbonnanotubes (0.8 wt%) in the solution state, which could make this material a good competitor forcommodity materials such as general purpose plastics, while allowing it to retain itsbiodegradability. In order to obtain a homogeneous dispersion of the carbon nanotubes in thematrix, oxygen-containing groups were introduced on the surface of the MWNTs. The gooddispersion of the nanotubes in the PLLA matrix observed by scanning electron microscopy wasattributed to the fact that the PLLA was compatible with the functionalized MWNTs during thecompounding process. The electrical conductivity of the composites was also investigated
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.326-328.1785.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Thermal Stability of Poly(ε-caprolactone)/Carbon Nanotube Composites (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 334-335 (Mar. 2007), p. 881-884 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.881.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Preparation and Characterization of Poly(ε-Caprolactone)/Multiwalled Carbon Nanotube Composites (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 342-343 (July 2007), p. 737-740 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this study, poly(ε-caprolactone) (PCL)/multiwalled carbon nanotube (MWCNT)composites with different contents of MWCNTs were successfully prepared by solutioncompounding, a method which could make them good competitors for commodity materials such asgeneral purpose plastics, while allowing them to keep their complete biodegradability. For thehomogeneous dispersion of the MWCNTs in the polymer matrix, oxygen-containing groups wereintroduced on their surface. The mechanical properties of the PCL/MWCNT composites wereeffectively increased due to the incorporation of the MWCNTs. The composites were characterizedusing scanning electron microscopy, in order to obtain information on the dispersion of the MWCNTsin the polymeric matrix. In the case of the composites containing 2.0 wt% of MWCNTs in theirmatrix, the strength and modulus of the composites were increased by 18.4% and 178.4%,respectively. In addition, the dispersion of the MWCNTs in the PCL matrix resulted in a substantialdecrease in the electrical resistivity of the composites as the MWCNT loading was increased from 0 to2.0 wt%
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.342-343.737.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Preparation and Characterization of Poly(ε-Caprolactone)-Grafted-Multiwalled Carbon Nanotubes (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 334-335 (Mar. 2007), p. 873-876 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Sheets of poly(ε-caprolactone) (PCL)/carbon nanotube composites were prepared throughthe solvent cast method. Multiwalled carbon nanotubes (MWCNT) functionalized with hydroxylgroups were used as an initiator for the ring opening polymerization of ε-caprolactone to introducePCL chains to the surface of MWCNT in order to ameliorate the dispersion of MWCNT in PCLmatrix. Grafting of PCL chains to MWCNT was followed by FTIR and TEM observations. Effect ofthe incorporation of MWCNT on the mechanical properties of PCL was explored before and after themodification of the MWCNT by the PCL grafting
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.873.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Fabrication of Organic Silk Fibroin/Multiwalled Carbon Nanotube Composite Cryogels by Freeze-Drying Method (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 47-50 (June 2008), p. 1105-1108 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The multiwalled carbon nanotubes (MWCNTs) incorporated organic silk fibroin cryogelswere fabricated through sol-gel process of aqueous silk fibroin solution, followed by freeze-drying.The MWCNT incorporated silk fibroin hydrogel was prepared by the regeneration of silk fibroinusing an aqueous silk fibroin solution in which MWCNTs were dispersed by in-situ methods. Themorphology and microstructure of the silk fibroin network structure were characterized using fieldemission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). TheFESEM and TEM images show that the cryogels had three-dimensional network structures and theMWCNTs were well embedded in the network structures of regenerated silk fibroin. The porousproperties of the MWCNT incorporated silk fibroin cryogels were investigated by nitrogenadsorption-desorption technique. The MWCNTs increased the proportions of micropores andmesopores in the silk fibroin cryogels when they were introduced in the appropriate amounts
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/41/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.1105.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Multiwalled Carbon Nanotubes-Incorporated Polyurethane Nanocomposites (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 47-50 (June 2008), p. 1109-1112 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Polyurethane was used as adhesive due to high reactivity, high flexibility, and mechanicalproperties. Electrically conductive adhesives (ECAs) are an alternative to tin-lead solder in order toprovide conductive paths between two electrical device components, which typically consist of apolymeric resin that contributes physical and mechanical properties, and conductive fillers. However,ECAs have low electrical conductivity and unstable network due to large contact points of the fewmicrometer-sized metal particles. In order to overcome these restrictions, multiwalled carbonnanotubes (MWCNTs) with high aspect ratio and smaller nanometer scale can be used as conductivefillers. In this study, ECAs were based on polyurethane filled with two kinds of fillers, raw MWCNTsand acid treated MWCNTs, respectively. Electrical conductivity was measured by using four-pointprobe. Morphology and dispersibility of fillers were observed by scanning electron microscopy andtransmission electron microscopy
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/41/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.1109.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Electrically Conducting Silk Fibroin Microspheres by Incorporation of Multiwalled Carbon Nanotubes on their Surfaces (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 544-545 (May 2007), p. 977-980 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Electrorheological (ER) particles were obtained by the adsorption of multiwalled carbonnanotubes (MWCNT) on the surface of silk fibroin microspheres. The resulting spherical polymericmicrospheres consist of a silk fibroin core and an MWCNT shell, which is electrically conducting.The silk fibroin microspheres were prepared by the phase separation of the silk fibroin andpoly(ethylene oxide) (PEO) blend solution, and the MWCNT dispersion was prepared byultrasonication with cetyltrimethylammonium bromide (CTAB) surfactant. The ER particles wereprepared using a simple process involving the blending of the silk fibroin microsphere suspension andaqueous MWCNT dispersion. The morphology of the ER particles was examined by field emissionscanning electron microscopy (FESEM) and their electrical conductivity measured by the four-probemethod was 4.8×10-4 S/cm. The prepared composite microspheres suspended in silicone oil showedtypical ER characteristics, including the formation of a chain-like structure under an applied electricfield (1.9 kV/mm). This phenomenon can be explained by the interfacial polarizability of theMWCNTs adsorbed on the surface of the polymeric microspheres
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.544-545.977.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Mechanical Properties of Silk Fiber Reinforced Polymer Composites with Carbon Nanotubes (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 321-323 (Oct. 2006), p. 921-924 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Biodegradable composites consisting of poly(butylene succinate) (PBS) and carbonnanotube (CNT)-coated silk (Bombxy mori) fibers were prepared by melt compression molding. Theresults show that even with addition of a small amount of reinforcements (about 3 wt%), the tensilestrength and modulus of the composites improved dramatically by about 195% and 121%,respectively, compared with PBS. The improvement is attributed to stronger interfacial shear strengthbetween the PBS matrix and the CNT-coated surface of silk fiber, which was obtained by themicrobond droplet test between PBS matrix and fibers. Furthermore, scanning electron microscopyimages indicated that the interfacial adhesion between PBS matrix and CNT-coated fiber improved inthe composites
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.321-323.921.pdf
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