Synthesis and properties of poly(ether urethane) membranes filled with isophorone diisocyanate-grafted carbon nanotubes

Deng, Jiao-Yu; Zhang, Xiaoqin; Wang, Ke; Zou, Hao; Zhang, Qin; Fu, Qiang

doi:10.1016/j.memsci.2006.11.033

Cited by 45 publications

(28 citation statements)

References 21 publications

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“…While in some works the research was focused on understanding the effects of the addition of CNT to a polyurethane matrix through melt blending [21] or solvent mixing [22][23][24], in some others it has been tried to benefit from the polyurethanes chemistry to prepare grafted nanotubes hybrids which were further polymerised in-situ with the aim of creating CNT cross-linked networks 4 [25][26][27][28][29][30], or to functionalise the nanotubes and then solvent mix them with the polyurethanes to compare the effect of different nanotubes treatments [31,32].…”

Section: Introductionmentioning

confidence: 99%

Influence of hard segment content and nature on polyurethane/multiwalled carbon nanotube composites

Fernández-d’Arlas

Khan

Rueda

et al. 2011

Composites Science and Technology

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. carbon nanotubes percolative network formation seemed to be crucial for obtaining significant reinforcement, being observed at this stage, a reduction of ductility, phenomena which is related to an increase on hard domains interconnections by MWCNT. The hard to soft segment ratio into PU plays a crucial role on determining the stress transfer to MWCNT. In addition, PU hard domains nature has important effect on nanotubes reinforcing character, this fact being related to the different PU intrinsic morphologies as well as different PU-MWCNT interactions.

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Section: Introductionmentioning

confidence: 99%

Influence of hard segment content and nature on polyurethane/multiwalled carbon nanotube composites

Fernández-d’Arlas

Khan

Rueda

et al. 2011

Composites Science and Technology

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“…And PEU/MWCNT membrane composites with well mechanical properties and great permeability have been obtained. 24 Following this line, in this article, MWCNT grafted by 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-1-octanol (TDFOL) (MWCNT-TDFOL) was prepared for the first time and used as the filler for PEU modification. In this way, a remarkable increase of mechanical properties of PEU has been achieved by adding a small amount of MWCNT-TDFOL, on the other hand, a hydrophobic surface was also obtained by directly depositing MWCNT-TDFOL on PEU surface.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and surface properties of polyurethane/fluorinated multi‐walled carbon nanotubes composites

Deng

Cao

et al. 2008

J of Applied Polymer Sci

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To improve the mechanical and surface properties of poly(etherurethane) (PEU), multi-walled carbon nanotubes (MWCNTs) were surface grafted by 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-1-octanol (TDFOL) (MWCNT-TDFOL) and used as reinforcing agent for PEU. Fouriertransform infrared spectroscopy revealed the successful grafting of MWCNTs. PEU filled with MWCNT-TDFOL could be well dispersed in tetrahydrofuran solution, and tensile stress-strain results and dynamic mechanical analysis showed a remarkable increase in mechanical properties of PEU by adding a small amount of MWCNT-TDFOL. Contact angle testing displayed a limited improvement (just 98) in the hydrophobicity of PEU surface by solution blending with MWCNT-TDFOL. However, a large improvement of surface hydrophobicity was observed by directly depositing MWCNT-TDFOL powder on PEU surface, and the water contact angle was increased from 808 to 1388. Our work demonstrated a new way for the modification of carbon nanotubes and for the property improvement of PEU.

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“…For the membranes that were subjected to compaction the removal capacities are shown in Table VI. Under these conditions, % rejection of Pb 21 for composite membranes containing 1% amide functionalized CNT was 90.1% where as it was 93.1% for Cu 21 . The modified MWNTs provide sites for complexation with metal ions which are absent in plain polysulfone membranes.…”

Section: Small Angle Neutron Scatteringmentioning

confidence: 88%

“…Polysulfone (PS) Udel P-3500 was a gift sample from M/s Solvay Specialty Polymers, Vadodara, India, having molecular weight 80,000 g mol 21 . MWNTs and SWCNTs (diameter: 6-9 nm and 0.7-0.9 nm, respectively) were commercial samples from M/s Sigma Aldrich.…”

Section: Methodsmentioning

confidence: 99%

“…20 Isophorone diisocyanate-grafted carbon nanotubes incorporated into poly(ether urethane) have shown high water-vapor permeability, 21 whereas CNT/polycarbonate composite membranes have good hydrogen separation properties. 22 For the liquid state, it has been shown that the flow of water through CNTs would be very high due to the very low resistance 23 and large slip lengths.…”

Section: Introductionmentioning

confidence: 99%

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Polysulfone‐based composite membranes with functionalized carbon nanotubes show controlled porosity and enhanced electrical conductivity

Mangukiya

Prajapati

Kumar

et al. 2016

J of Applied Polymer Sci

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Composite membranes of functionalized (-COOH, -CONH 2 , -N 3 ) carbon nanotubes/polysulfone (CNT/PS) synthesized by the phase-inversion method show unique properties with respect to surface characteristics and the selective separation of metal ions from aqueous solution. Apart from the reduction in the pore size depending on the type of functionalities on the nanotubes, the pure water permeation could reach up to as high as 600 L m 22 h 21 (LMH) at reduced pressures and could be due to the functionalized tips of the nanotubes on the membrane surface resulting from the phase inversion process used for the membrane fabrication. The membranes were characterized by small angle neutron scattering (SANS) to confirm the uniform distribution of the nanopores and the surface morphology of the membranes. Results show that rejection of Cu(II) was better than Pb(II) depending on the surface functionality. Interestingly, these membranes also showed enhanced conductivities in the range of 1.0 3 10 22 S cm 21 , the conductivity depending on the type of functionality on the nanotubes, thus confirming the presence of functionalized nanotubes tips on the membrane surface.

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Synthesis and properties of poly(ether urethane) membranes filled with isophorone diisocyanate-grafted carbon nanotubes

Cited by 45 publications

References 21 publications

Influence of hard segment content and nature on polyurethane/multiwalled carbon nanotube composites

Influence of hard segment content and nature on polyurethane/multiwalled carbon nanotube composites

Mechanical and surface properties of polyurethane/fluorinated multi‐walled carbon nanotubes composites

Polysulfone‐based composite membranes with functionalized carbon nanotubes show controlled porosity and enhanced electrical conductivity

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