Covalent Functionalization of Multiwalled Carbon Nanotubes with Poly(acrylic acid)

2006 ◽  
Vol 24 (4) ◽  
pp. 563-568 ◽  
Author(s):  
Yan-Xin Liu ◽  
Zhong-Jie Du ◽  
Yan Li ◽  
Chen Zhang ◽  
Hang-Quan Li
Keyword(s):  
Carbon Nanotubes ◽  
Acrylic Acid ◽  
Multiwalled Carbon Nanotubes ◽  
Covalent Functionalization ◽  
Multiwalled Carbon ◽  
Poly Acrylic Acid

Covalent functionalization of multiwalled carbon nanotubes with super-hydrophobic property

2018 ◽  
Vol 38 (6) ◽  
pp. 537-543 ◽  
Author(s):  
Minghua Li ◽  
Zhiyuan Xu ◽  
Jinyang Chen ◽  
San-E Zhu
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Chemical Interaction ◽  
Hydrophobic Property ◽  
Covalent Functionalization ◽  
Multiwalled Carbon ◽  
Surface Contact Angle ◽  
Loading Ratio ◽  
Functionalized Mwcnts

AbstractSurface covalent functionalization of multiwalled carbon nanotubes (MWCNTs) is carried out by coupling of isocyanate-decorated MWCNTs with hydroxyl-terminated polydimethylsiloxane (HTPS), resulting in the formation of functionalized MWCNTs. Thermogravimetry analysis (TGA) of functionalized MWCNTs-1,2,3 exhibits the similar peaks in the temperature range of 200–500°C, which all correspond to the degradation of chemically grafted polyurethane on the nanotube surface. Field emission scanning electron microscopy (FE-SEM) reveals that as the polyurethane grafted onto the surface of MWCNTs loading ratio increased, the surface roughness of the MWCNTs is reduced. The chemical interaction of HTPS with isocyanate-decorated nanotube surface using the grafting-to strategy in a one-step process is confirmed by Fourier transform infrared spectroscopy (FT-IR). The surface contact angle of MWCNTs-3 with the largest content of polyurethane reached 171°, indicating that the surface covered with low surface energy polyurethane shows a super-hydrophobic property. The good dispersion of polyurethane-functionalized MWCNT-3, particularly at high content in the NR nanocomposites, is evidenced from transmission electron microscopy (TEM).

Adsorption of 60Co from aqueous solution onto alginate–acrylic acid–vinylsulfonic acid/multiwalled carbon nanotubes composite

2019 ◽  
Vol 77 (9) ◽  
pp. 4631-4653
Author(s):  
Islam Mohamed Abdelmonem ◽  
Essam Metwally ◽  
Tharwat Essa Siyam ◽  
Farid Abou El-Nour ◽  
Abdel-Rahman Mahmoud Mousa
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solution ◽  
Acrylic Acid ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon
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