نتایج جستجو برای: mwcnts)

تعداد نتایج: 1876  

2017
Ting Zhang Meng Tang Shanshan Zhang Yuanyuan Hu Han Li Tao Zhang Yuying Xue Yuepu Pu

The numerous increasing use of carbon nanotubes (CNTs) derived from nanotechnology has raised concerns about their biosafety and potential toxicity. CNTs cause immunologic dysfunction and limit the application of CNTs in biomedicine. The immunological responses induced by pristine multi-walled carbon nanotubes (p-MWCNTs) and PEGylated multi-walled carbon nanotubes (MWCNTs-PEG) on BALB/c mice vi...

Journal: :Talanta 2009
Ying Li Yogeswaran Umasankar Shen-Ming Chen

A conductive biocomposite film (MWCNTs-PANIFAD) which contains multi-walled carbon nanotubes (MWCNTs) along with the incorporation of poly(aniline) and poly(flavin adenine dinucleotide) co-polymer (PANIFAD) has been synthesized on gold and screen printed carbon electrodes by potentiostatic methods. The presence of MWCNTs in the MWCNTs-PANIFAD biocomposite film enhances the surface coverage conc...

2013
Yuanqin Jiang Honggang Zhang Yange Wang Min Chen Shefang Ye Zhenqing Hou Lei Ren

Biomedical applications of carbon nanotubes (CNTs) often involve improving their hydrophilicity and dispersion in biological media by modifying them through noncovalent or covalent functionalization. However, the potential adverse effects of surface-functionalized CNTs have not been well characterized. In this study, we functionalized multi-walled CNTs (MWCNTs) via carboxylation, to produce MWC...

2017
Xiuping Wang Zilin Zhou Fangfang Chen

The addition of surface functional groups to multi-walled carbon nanotubes (MWCNTs) expands their application in engineering, materials, and life science. In the study, we explored the antifungal activities of MWCNTs with different surface groups against an important plant pathogenic fungi Fusarium graminearum. All of the OH-, COOH-, and NH₂-modified MWCNTs showed enhanced inhibition in spore e...

2015
Zongshuang Cao Li Qiu Yongzhen Yang Yongkang Chen Xuguang Liu

The effects of surface modifications of multi-walled carbon nanotubes (MWCNTs) on their dispersibility in different solvents and poly (ether ether ketone) (PEEK) have been studied. MWCNTs were treated by mixed acids to obtain acid-functionalized MWCNTs. The acid-functionalized MWCNTs were modified with six different chemical agents separately, 1,6-diaminohexane, hexadecyl trimethyl ammonium bro...

2014
Reti Hai Yulin Wang Xiaohui Wang Zhize Du Yuan Li Wei-Chun Chin

BACKGROUND The increasing use of multiwalled carbon nanotubes (MWCNTs) will inevitably lead to the exposure of wastewater treatment facilities. However, knowledge of the impacts of MWCNTs on wastewater nutrient removal and bacterial community structure in the activated sludge process is sparse. AIMS To investigate the effects of MWCNTs on wastewater nutrient removal, and bacterial community s...

2016
E. O. TAHA E. C. BOROWSKI U. F. KANDIL A. EL - SAYED AWADALLAH A. A. ABOUL - ENEIN M. R. TAHA

This paper discusses the potential use of multi-walled carbon nanotubes (MWCNTs) to improve the mechanical properties of short glass fiber composites. Two methods to incorporate MWCNTs in short glass fiber composite fabrication were examined. First, Carboxylic-functionalized MWCNTs were dispersed in a silane fiber sizing material and then were allowed to bond to the surface of glass fibers. Sec...

2009
Chen-Chi M. Ma Shu-Hang Liao Cheng-Chih Weng Chuan-Yu Yen Ming-Chi Tsai Ming-Yu Yen Min-Chien Hsiao Ay Su

Multiwalled carbon nanotubes (MWCNTs) were covalently modified with different molecular weights 400 and 2000 poly(oxyalkylene)-amine bearing DGEBA epoxy (POA400-DGEBA and POA2000-DGEBA) oligomers via a grafting method. The weight-average molecular weights of POA400-DGEBA and POA2000-DGEBA were measured as 1623 and 9231 with polydispersity indices (PDIs) of 2.3 and 1.6, respectively. The oxidize...

2016
Toshiaki Sasaki Masumi Asakura Chigusa Ishioka Tatsuya Kasai Taku Katagiri Shoji Fukushima

OBJECTIVES IARC has classified one type of multi-walled carbon nanotubes (MWCNTs), MWNT-7, as possibly carcinogenic to humans (Group 2B); however, other types of MWCNT were categorized as not classifiable as to their carcinogenicity to humans (Group 3). In vitro chromosomal aberration assays of MWNT-7 showed polyploid formation but not structural abnormalities. This study investigated the influ...

2014
Mengli Zhao Ye Cao Xiaoqi Liu Jianhua Deng Dejun Li Hanqing Gu

N+-bombarded multi-walled carbon nanotubes (N+-bombarded MWCNTs), with different nitrogen atomic percentages, were achieved by different N ion beam currents using ion beam-assisted deposition (IBAD) on MWCNTs synthesized by chemical vapor deposition (CVD). Characterizations of N+-bombarded MWCNTs were evaluated by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), R...

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