Preparation of multi-walled carbon nanotubes grafted with synthetic poly(l-lysine) through surface-initiated ring-opening polymerization

Polymer ◽  
2007 ◽  
Vol 48 (15) ◽  
pp. 4352-4360 ◽  
Author(s):  
Jian Li ◽  
Wei-Dong He ◽  
Li-Ping Yang ◽  
Xiao-Li Sun ◽  
Qing Hua
Keyword(s):  
Carbon Nanotubes ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

scholarly journals Enhanced Tensile Properties of Multi-Walled Carbon Nanotubes Filled Polyamide 6 Composites Based on Interface Modification and Reactive Extrusion

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 997
Author(s):  
Min Park ◽  
Ji-un Jang ◽  
Jong Hyuk Park ◽  
Jaesang Yu ◽  
Seong Yun Kim
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Properties ◽  
Ring Opening ◽  
Reactive Extrusion ◽  
Polyamide 6 ◽  
Ring Opening Polymerization ◽  
Uniform Dispersion ◽  
Multi Walled Carbon Nanotubes ◽  
Anionic Ring ◽  
Walled Carbon Nanotubes

To induce uniform dispersion and excellent interfacial properties, we adopted a strategy of combining both polyamide 6 (PA6) grafting for multi-walled carbon nanotubes (MWCNTs) and reactive extrusion of PA6 matrix, based on anionic ring-opening polymerization of ε-caprolactam (CL). Compared to –COOH and –NCO treatments of MWCNTs, enhanced MWCNT dispersion and tensile properties of the composites were achieved using the applied strategy, and the tensile strength and modulus of the PA6-grafted MWCNT-filled PA6 composites were 5.3% and 20.5% higher than those of the purified MWCNT-filled PA6 composites, respectively. In addition, they were almost similar to the theoretical ones calculated by the modified Mori–Tanaka method (MTM) assuming a perfect interface, indicating that the tensile properties of MWCNT-filled PA6 composites can be optimized by PA6 grafting and reactive extrusion based on the anionic ring-opening polymerization of CL due to uniform MWCNT dispersion and excellent interfacial property.

Surface initiated ring-opening polymerization of l-proline N-carboxy anhydride from single and multi walled carbon nanotubes

2013 ◽  
Vol 49 (10) ◽  
pp. 3095-3103 ◽  
Author(s):  
Manos Gkikas ◽  
Biswa P. Das ◽  
Marina Tsianou ◽  
Hermis Iatrou ◽  
Georgios Sakellariou
Keyword(s):  
Carbon Nanotubes ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Dispersion of Multi-Walled Carbon Nanotubes Modified with Poly-L-Lysine in Water

2013 ◽  
Vol 275-277 ◽  
pp. 1785-1788 ◽  
Author(s):  
Ting Ting Zhang ◽  
Li Ming Zou ◽  
Xin Long Ling ◽  
Xi Li
Keyword(s):  
Carbon Nanotubes ◽  
Ring Opening ◽  
Ph Value ◽  
Water Solution ◽  
Water Soluble ◽  
Mass Ratio ◽  
Group Water ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Nmr Dispersion

A noncovalent method was presented in order to improve the solubility of multi-walled carbon nanotubes (MWCNTs) in water. Poly (ε-benzyloxycarbonyl-L-lysine) (PZLL) was prepared by ring-opening polymerization of ε-carbobenzoxy-L-lysine N-carboxyanhydride (Z-L-Lys NCA). After the removal of the benzyloxycarbonyl group, water-soluble poly-L-lysine (PLL) was obtained. The structure of PZLL and PLL was characterized by FTIR and 1H NMR. Dispersion of MWCNTs in the water solution of PLL was investigated by ultraviolet spectrophotometer and visual inspection. When the mass ratio of MWCNTs to PLL is 1:50 and the pH value of the water solution of PLL is 5, MWCNTs can be well dispersed in water.

scholarly journals Synthesis of polycaprolactone-polyimide-polycaprolactone triblock copolymers via a 2-step sequential copolymerization and their application as carbon nanotube dispersants

2017 ◽  
Vol 8 (4) ◽  
pp. 674-681 ◽  
Author(s):  
Chengyin Liu ◽  
Bo Liu ◽  
Mary B. Chan-Park
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Ring Opening ◽  
Triblock Copolymers ◽  
Single Walled Carbon Nanotubes ◽  
Ring Opening Polymerization ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Triblock copolymers of polycaprolactone-polyimide-polycaprolactone (PCL-PI-PCL) were synthesized via polycondensation followed by ring-opening polymerization and used as single-walled carbon nanotubes (SWNTs) dispersants.

Multi-walled Carbon Nanotubes Penetrate into Plant Cells and Affect the Growth of Onobrychis arenaria Seedlings

Acta Naturae ◽  
2011 ◽  
Vol 3 (1) ◽  
pp. 99-106 ◽  
Author(s):  
E A Smirnova ◽  
A A Gusev ◽  
O N Zaitseva ◽  
E M Lazareva ◽  
G E Onishchenko ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Plant Cells ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes
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