A Schiff base/quaternary ammonium salt bifunctional graphene oxide as an efficient adsorbent for removal of Th(IV)/U(VI)

2017 ◽  
Vol 508 ◽  
pp. 303-312 ◽  
Author(s):  
Ning Pan ◽  
Long Li ◽  
Jie Ding ◽  
Ruibing Wang ◽  
Yongdong Jin ◽  
...  
Keyword(s):  
Schiff Base ◽  
Graphene Oxide ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Efficient Adsorbent

Enhanced mechanical properties of olefin block copolymer by adding a quaternary ammonium salt functionalized graphene oxide

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 54785-54792 ◽  
Author(s):  
Guopeng Sui ◽  
Yongsheng Zhao ◽  
Qin Zhang ◽  
Qiang Fu
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Block Copolymer ◽  
Chemical Modification ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide

Large mechanical properties enhancement of OBC via blending with chemical modification CTAB-GO.

scholarly journals The Fabrication of Cassava Silk Fibroin-Based Composite Film with Graphene Oxide and Chitosan Quaternary Ammonium Salt as a Biodegradable Membrane Material

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Shuqiang Zhao ◽  
Pibo Ma ◽  
Ailan Wan ◽  
Jiwei Huang ◽  
Houyong Yu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Composite Film ◽  
Silk Fibroin ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Breaking Strength ◽  
Composite Films ◽  
The Novel ◽  
Membrane Material

AbstractA novel and excellent composite film was fabricated by simply casting cassava silk fibroin (CSF), chitosan quaternary ammonium salt (HACC), and graphene oxide (GO) in an aqueous solution. Scanning electron microscope images showed that when GO was dispersed in the composite films, the surface of CSF-based composite film became rough, and a wrinkled GO structure could be found. When the content of GO was 0.8%, the film displayed a higher change with respect to the breaking strength and elongation, respectively, up to 97.69 ± 3.69 and 79.11 ± 1.48 MPa, keeping good thermal properties because of the incorporation of GO and HACC. Furthermore, the novel CSF/HACC/GO composite film demonstrates a lower degradation rate, implying the improvement of the resistance to the enzyme solution. Especially in the film with 0.8 wt% GO, the residual mass arrived at 64.35 ± 1.1% of the primary mass after 21 days compared with the CSF/HACC film. This would reclaim the application of silk-based composite films in the biomaterial field.

Novel magnetic chitosan/quaternary ammonium salt graphene oxide composite applied to dye removal

2020 ◽  
Vol 8 (4) ◽  
pp. 103820 ◽  
Author(s):  
Tauany de Figueiredo Neves ◽  
Nicole Barticiotto Dalarme ◽  
Paula Mayara Morais da Silva ◽  
Richard Landers ◽  
Carolina Siqueira Franco Picone ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Dye Removal ◽  
Magnetic Chitosan ◽  
Oxide Composite

π–π conjugations improve the long-term antibacterial properties of graphene oxide/quaternary ammonium salt nanocomposites

2016 ◽  
Vol 304 ◽  
pp. 873-881 ◽  
Author(s):  
Xiaoli Ye ◽  
Xiaoming Qin ◽  
Xueru Yan ◽  
Junkang Guo ◽  
Langhuan Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Antibacterial Properties

Preparation and Characterization of Two New Kinds of Soluble Quaternary Ammonium Salts of Chitosan

2011 ◽  
Vol 239-242 ◽  
pp. 496-500
Author(s):  
Li Ju Tan ◽  
He Dong Wang ◽  
Jiang Tao Wang
Keyword(s):  
Schiff Base ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Resonance Spectroscopy ◽  
Spectra Analysis ◽  
Chitosan Derivatives ◽  
H Nmr

Schiff base of chitosan was obtained by the reaction of chitosan and aromatic aldehyde, and then Schiff base of chitosan reacted with methyl iodide to get soluble quaternary ammonium salts of chitosan which were N-metoxybenzenemethyl quaternary ammonium salt of chitosan (NM- Chitosan) and N-hydroxybenzenemethyl quaternary ammonium salt of chitosan(NH-Chitosan). The obtained chitosan derivatives were characterized by Infrared Spectra Analysis(FT-IR), Nuclear Magnetic Resonance Spectroscopy(1H NMR) and elemental analysis. Quantitative analysis showed that there was small difference between degrees of quaternization(DQ) and degrees of substitution(DS), and the solubility of chitosan derivatives was demonstrated to be better in the organic solvents.

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