Carbon nanotubes /polymer composites preparation

The viscoelastic properties of carbon nanotube/polymer composites have both practical importance related to composite processing and scientific importance as a probe of the composite dynamics and microstructure. The viscosity for CNT/PU dispersion at mixing is also very important for in-situ formation of polyurethane nanocomposite. Lower viscosity means a better flow ability and more homogenous mixing with isocyanate. Furthermore, low viscosity is very helpful to remove the bubbles before curing, which is a key step for polyurethane preparation. 

Compared to the polymer sulfone membrane, which demonstrates that the improved properties of the composite membranes induce an increase in power density, the strategy for carbon nanotube-sulfonated polyarylene sulfone composite membranes discussed here could potentially be extended to other carbon nanotube-polymer composite systems. Recent advances in the chemistry of carbon nanotube functionalization [54], and further understanding of the interaction between the carbon nanotubes and the polymer, may encourage the preparation of a variety of new composite materials. 

Amirilargani M, Ghadimi A, Tofighy MA, Mohammadi T (2013) Effects of polyfallylamine hydrochloride) as a new functionalization agent for preparation of poly vinyl alcohol/ multiwalled carbon nanotubes membranes. J Membr Sci 447 315-324 Andrews R, Weisenberger MC (2004) Carbon nanotube polymer composites. Curr Opin Solid... 

Co-continuous polymer blends of 50/50 polyamide6/acrylonitrile-butadiene-styrene copolymer (PA6/ABS) involving multiwall carbon nanotubes (MWNTs) were prepared by melt mixing technique in order to develop conducting composites utilizing the concept of double-percolation. To control the dispersion and to selectively restrict MWNTs in the PA6 phase of the blends, MWNTs were pre-treated with two modifiers which differ in their molecular length scales and... 

An attachment of structures bearing isocyanate groups by amide bonding is feasible, too. However, a diisocyanate is employed here with one of its functional groups being converted into an amide with the carboxyl group. Carbon nanotubes are thus modified suitable for the preparation of nanotube-polymer composites, especially of the polyurethane type. 

Composites with Other Polymers Besides the composite materials presented so far, a multitude of further polymer composites with carbon nanotubes has been prepared and studied regarding their properties. After all, any given polymer is suitable to some extent to interact with different carbon nanotubes (pristine or functionalized). The number and range of possible combinations surpass the scope of this text, so the examples mentioned below inevitably have to remain incomplete. 

Perez L D, Zuluaga M A, Kyu T, Dark J E and Lopez B L (2009) Preparation, characterization and physical properties of multiwall carbon nanotube/elastomer composites, Polym Eng Sci 49 866-874. 

Zhou G J, Wang S F, Zhang Y, Zhuang Q X and Han Z W (2008) In situ preparation and continuous fiber spinning of poly(p-phenylene benzobisoxazole) composites with oligo-hydroxy-amide-functionalized multi-walled carbon nanotubes, Polymer 49 2520-2530. 

Yue D, Liu Y, Shen Z, Zhang L (2006) Smdy on preparation and properties of carbon nanotubes/ mbber composites. J Mater Sei 41(8) 2541-2544 Yulong D, Hajar A, Dongsheng W, Richard AW (2006) Heat transfer of aqueous susperrsions of carbon nanotubes (CNT nanofluids). Int J Heat Mass Transf 49(2) 240-250 Zaminpayma E (2014) Molecular dynamics simulation of mechanical properties and interaction energy of polythiophene/polyethylene/poly(p-phenylenevinylene) and CNTs composites. Polym Compos... 

Kim, G.-M., G. H. Michler, and P. Potschke (2005b). Deformation processes of ultrahigh porous multiwalled carbon nanotubes/polycarbonate composite fibers prepared by electrospinning. Polymer 46(18) 7346-7351. 

Sul G, Zhong WH, Yang XP, Yu YH, Zhao SH (2008) Preparation and properties of natural rubber composites reinforced with pretreated carbon nanotubes. Polym Adv Technol 19 1543-1549... 

FUNCTIONALIZATION OF CARBON NANOTUBES FOR POLYMER-COMPOSITE PREPARATION... 

Yesil, S. and G. Bayram. 2011. Polyfethylene terephthalate)/carbon nanotube composites prepared with chemically treated carbon nanotubes. Polymer Engineering Science 51 (7) (July 11) 1286-1300. doi 10.1002/pen.21938. http //doi.wiley.eom/10.1002/ pen.21938. 

The first report on the preparation of a CNT/polymer nanocomposite in 1994 [2], a myriad of research efforts have been made to understand their structure-property relationship and find useful applications. The effective utilization of carbon nanotubes in composite apphcations depends strongly on the ability to homogeneously disperse them throughout the matrix without destroying their integrity. Furthermore, good interfacial bonding... 

Electronically conducting polymers (ECPs) such as polyaniline (PANI), polypyrrole (PPy) and po 1 y(3.4-cthy 1 cncdi oxyth iophcnc) (PEDOT) have been applied in supercapacitors, due to their excellent electrochemical properties and lower cost than other ECPs. We demonstrated that multi-walled carbon nanotubes (CNTs) prepared by catalytic decomposition of acetylene in a solid solution are very effective conductivity additives in composite materials based on ECPs. In this paper, we show that a successful application of ECPs in supercapacitor technologies could be possible only in an asymmetric configuration, i.e. with electrodes of different nature. 

Nonconjugated hydrocarbon polymers could also be combined with carbon nanotubes, with polystyrene being the most studied example. The composites are generally prepared by solution or shear mixing techniques, resulting in materials with improved mechanical properties [60]. 

McNally T, Potschke P. Polymer-carbon nanotube composites Preparation, properties and applications. 1st ed. Cambridge Woodhead Publishing Limited 2011. 

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