Covalent functionalization of multiwalled carbon nanotubes with poly(styrene-co-acrylonitrile) by reactive melt blending

2009 ◽  
Vol 45 (4) ◽  
pp. 1002-1008 ◽  
Author(s):  
Jia-Hua Shi ◽  
Bing-Xing Yang ◽  
Suat Hong Goh
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Melt Blending ◽  
Covalent Functionalization ◽  
Multiwalled Carbon ◽  
Reactive Melt

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).

scholarly journals Controlled Covalent Functionalization of Multiwalled Carbon Nanotubes using [4 + 2] Cycloaddition of Benzocyclobutenes

2007 ◽  
Vol 19 (26) ◽  
pp. 6370-6372 ◽  
Author(s):  
Georgios Sakellariou ◽  
Haining Ji ◽  
Jimmy W. Mays ◽  
Nikos Hadjichristidis ◽  
Durairaj Baskaran
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Covalent Functionalization ◽  
Multiwalled Carbon

Largely reinforced polyurethane via simultaneous incorporation of poly(lactic acid) and multiwalled carbon nanotubes

RSC Advances ◽  
2015 ◽  
Vol 5 (39) ◽  
pp. 30912-30919 ◽  
Author(s):  
Yan Zhou ◽  
Hao Xiu ◽  
Jia Dai ◽  
Hongwei Bai ◽  
Qin Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Lactic Acid ◽  
Multiwalled Carbon Nanotubes ◽  
Poly Lactic Acid ◽  
Melt Blending ◽  
Multiwalled Carbon

In this study, we simultaneously introduced both poly(lactic acid) (PLA) and multiwalled carbon nanotubes (CNTs) into the polyurethane (PU) matrix via melt blending, to achieve balanced mechanical properties and good conductivity.

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 a Low Molecular Weight Chitosan

2007 ◽  
Vol 8 (2) ◽  
pp. 322-326 ◽  
Author(s):  
Gang Ke ◽  
Wenchao Guan ◽  
Changyu Tang ◽  
Wenjie Guan ◽  
Danlin Zeng ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Weight ◽  
Multiwalled Carbon Nanotubes ◽  
Low Molecular Weight ◽  
Covalent Functionalization ◽  
Multiwalled Carbon ◽  
Low Molecular Weight Chitosan

The Study on the Microstructures and High Performances of Melt Blending Polyurethane/Multiwalled Carbon Nanotubes Composites

2008 ◽  
Vol 16 (8) ◽  
pp. 509-518 ◽  
Author(s):  
Fengdan Jiang ◽  
Sizhu Wu ◽  
Yongji Wei ◽  
Liqun Zhang ◽  
Guohua Hu
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Multiwalled Carbon Nanotubes ◽  
Microphase Separation ◽  
Thermoplastic Polyurethane ◽  
Melt Blending ◽  
Scanning Calorimetry ◽  
Multiwalled Carbon ◽  
High Temperature Tensile

A melt blending process was employed to prepare nanocomposites based on thermoplastic polyurethane (TPU) and multiwalled carbon nanotubes (MWNT). The content of MWNT filled in TPU was increased till 40 phr (parts per hundreds of rubber). The morphological, structural and mechanical properties of the resulting TPU nanocomposites were systematically investigated using scanning electron microscope (SEM), transmission electron microscope (TEM), differential scanning calorimetry (DSC), X-ray diffraction (XRD), dynamic mechanical thermal analysis (DMTA) and tensile testing. The results indicated that the unmodified MWNT were dispersed finely and uniformly in the TPU matrix beyond expectation, and the microphase separation structures of the TPU nanocomposites were slightly affected by the presence of MWNT. The mechanical properties of the TPU nanocomposites containing various amounts of MWNT at both room temperature and 120 °C were studied, which demonstrated that the modulus of TPU were greatly increased and the high temperature tensile strength of TPU was also prominently improved when MWNT content is higher. Moreover, the TPU nanocomposites exhibited improved thermal and electrical conductivities that might mean the TPU/MWNT nanocomposites have potential application as multifunctional materials.

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