Thermal Stability and Reducibility of Oxygen-Containing Functional Groups on Multiwalled Carbon Nanotube Surfaces: A Quantitative High-Resolution XPS and TPD/TPR Study

2008 ◽  
Vol 112 (43) ◽  
pp. 16869-16878 ◽  
Author(s):  
Shankhamala Kundu ◽  
Yuemin Wang ◽  
Wei Xia ◽  
Martin Muhler
Keyword(s):  
Thermal Stability ◽  
Carbon Nanotube ◽  
High Resolution ◽  
Functional Groups ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon

Mechanical properties, thermal behaviors and oil resistance of epoxidized natural rubber/multiwalled carbon nanotube nanocomposites prepared via in situ epoxidation

2016 ◽  
Vol 49 (2) ◽  
pp. 99-119 ◽  
Author(s):  
Saowaroj Chuayjuljit ◽  
Piyaphorn Mungmeechai ◽  
Anyaporn Boonmahitthisud
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Carbon Nanotube ◽  
Natural Rubber ◽  
Multiwalled Carbon Nanotube ◽  
Epoxidized Natural Rubber ◽  
Multiwalled Carbon ◽  
Oil Resistance ◽  
In Situ Epoxidation

Epoxidized natural rubber (ENR)/multiwalled carbon nanotube (MWCNT) nanocomposites were prepared via in situ epoxidation of natural rubber (NR) using a molar ratio of formic acid/hydrogen peroxide to isoprene unit at 0.75/0.75 with five loadings of MWCNTs, ranging from 0.5–2.5 parts per hundred parts of rubber (phr), at 50°C for 4 h. Based on Fourier transform infrared spectra, the epoxide content of ENR in the nanocomposites was about 32.5–33.2 mole%. Accordingly, the products were referred to ENR30/MWCNT nanocomposites. The curing characteristics, mechanical properties (tensile properties, tear strength, and hardness), glass transition temperature ( Tg), thermal stability, and oil resistance of these in situ ENR30/MWCNT nanocomposites were investigated and compared with NR and neat ENR30. The results showed that the scorch and cure times of ENR30/MWCNT nanocomposites were the longest followed by NR and ENR30. The incorporation of an appropriate amount of MWCNTs into the in situ epoxidation apparently improved the properties of NR. Among them, the nanocomposites filled with 2 phr MWCNTs exhibited the highest mechanical properties, Tg, thermal stability, and oil resistance. The mechanical properties of the in situ nanocomposites were also compared with those of the control nanocomposites prepared by adding MWCNTs directly in the prepared ENR30 latex. It was found that at similar MWCNT loadings, the in situ nanocomposites exhibited higher mechanical properties than the control nanocomposites.

scholarly journals Studies on the effects of different multiwalled carbon nanotube functionalization techniques on the properties of bio-based hybrid non-isocyanate polyurethane

RSC Advances ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 2180-2190 ◽  
Author(s):  
Xin He ◽  
Xiaoling Xu ◽  
Guangxu Bo ◽  
Yunjun Yan
Keyword(s):  
Thermal Stability ◽  
Surface Modification ◽  
Carbon Nanotube ◽  
Water Absorption ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Different Types

Different types of surface modification on MWCNTs can affect the thermal stability and water absorption of composites.

Electrochemical non-enzymatic glucose sensors based on nano-composite of Co3O4 and multiwalled carbon nanotube

2019 ◽  
Vol 30 (6) ◽  
pp. 1157-1160 ◽  
Author(s):  
Xiaoyun Lin ◽  
Yanfang Wang ◽  
Miaomiao Zou ◽  
Tianxiang Lan ◽  
Yongnian Ni
Keyword(s):  
Carbon Nanotube ◽  
Glucose Sensors ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Nano Composite
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