Preparation of carbon nanotube and polyurethane‐imide hybrid composites by sol–gel reaction

2018 ◽  
Vol 40 (S2) ◽  
pp. E1903-E1909 ◽  
Author(s):  
Reza Behnam ◽  
Hossein Roghani‐Mamaqani ◽  
Mehdi Salami‐Kalajahi
2003 ◽  
Vol 368 (3-4) ◽  
pp. 510
Author(s):  
Yuesheng Ning ◽  
Xiaobin Zhang ◽  
Youwen Wang ◽  
Yanlin Sun ◽  
Lihua Shen ◽  
...  

2008 ◽  
Vol 19 (26) ◽  
pp. 265607 ◽  
Author(s):  
Mônica J de Andrade ◽  
Márcio D Lima ◽  
Carlos P Bergmann ◽  
Guilherme de O Ramminger ◽  
Naira M Balzaretti ◽  
...  

e-Polymers ◽  
2014 ◽  
Vol 14 (3) ◽  
pp. 177-185
Author(s):  
Ayesha Kausar

AbstractIn this study, thermally and mechanically stable poly(methyl methacrylate) (PMMA)-based nanocomposites were produced through the reinforcement of electrospun aramid-silica-grafted multi-walled carbon nanotube-based nanofibers (MWCNT-Ar-Si). The multi-walled carbon nanotube was initially modified to prepare an isocyanatopropyltriethoxysilane-grafted MWCNT via the sol-gel route using 3-isocyanatopropyl-triethoxysilane and tetraethoxysilane (TEOS). The silica network was developed and linked to MWCNT by hydrolysis and condensation of TEOS. The said isocyanatopropyltriethoxysilane-grafted MWCNT was electrospun with the aramid solution. The electrospun MWCNT-Ar-Si nanofibers (0.1–1 wt.%) were then reinforced in a PMMA matrix. For comparative analysis, PMMA was also reinforced with 0.1–1 wt.% of aramid nanofibers. The tensile modulus of PMMA/MWCNT-Ar-Si 0.1 was 5.11 GPa, which was increased to 13.1 GPa in PMMA/MWCNT-Ar-Si 1. The 10% decomposition temperature of PMMA/MWCNT-Ar-Si 0.1–1 hybrids was in the range of 479–531°C. The glass transition temperature, determined from the maxima of tan δ data using dynamic mechanical thermal analysis, showed an increase with the filler loading and was maximum (301°C) for PMMA/MWCNT-Ar-Si 1 with 1 wt.% of MWCNT-Ar-Si nanofibers. In contrast, PMMA/Ar 0.1–1 hybrids showed lower values in the thermal and the mechanical profile depicting the combined effect of nanotube and aramid in electrospun nanofibers.


Nanomaterials ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 19
Author(s):  
Marilina Douloudi ◽  
Eleni Nikoli ◽  
Theodora Katsika ◽  
Michalis Vardavoulias ◽  
Michael Arkas

As the field of nanoscience is rapidly evolving, interest in novel, upgraded nanomaterials with combinatory features is also inevitably increasing. Hybrid composites, offer simple, budget-conscious and environmental-friendly solutions that can cater multiple needs at the same time and be applicable in many nanotechnology-related and interdisciplinary studies. The physicochemical idiocrasies of dendritic polymers have inspired their implementation as sorbents, active ingredient carriers and templates for complex composites. Ceramics are distinguished for their mechanical superiority and absorption potential that render them ideal substrates for separation and catalysis technologies. The integration of dendritic compounds to these inorganic hosts can be achieved through chemical attachment of the organic moiety onto functionalized surfaces, impregnation and absorption inside the pores, conventional sol-gel reactions or via biomimetic mediation of dendritic matrices, inducing the formation of usually spherical hybrid nanoparticles. Alternatively, dendritic polymers can propagate from ceramic scaffolds. All these variants are covered in detail. Optimization techniques as well as established and prospected applications are also presented.


2009 ◽  
Vol 21 (28) ◽  
pp. 2876-2880 ◽  
Author(s):  
Qiang Zhang ◽  
Mengqiang Zhao ◽  
Yi Liu ◽  
Anyuan Cao ◽  
Weizhong Qian ◽  
...  

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