scholarly journals A novel nanofiltration membrane with simultaneously enhanced antifouling and antibacterial properties

RSC Advances ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 6107-6117 ◽  
Author(s):  
Yawei Qi ◽  
Lifang Zhu ◽  
Congjie Gao ◽  
Jiangnan Shen
Keyword(s):  
Ammonium Chloride ◽  
Ag Nanoparticles ◽  
Antibacterial Properties ◽  
Nanofiltration Membrane ◽  
Trimethyl Ammonium Chloride

A novel nanofiltration membrane is prepared by using polydopamine (PDA) and hydroxyl propyl trimethyl ammonium chloride chitosan (HACC) mixed with chitosan (CN) and chelated silver (Ag) nanoparticles.

Synthesis, Surface Tension, Flocculation and Antibacterial Properties of Cationic Copolymer Methacryloxyethyl Trimethyl Ammonium Chloride-Butyl Acrylate-Acrylamide

2021 ◽  
Vol 58 (3) ◽  
pp. 211-219
Author(s):  
Geng Su ◽  
Ya-Jie Jiang ◽  
Hong-Bin Ju ◽  
Ya-Kui Wang ◽  
Shui-Xin Yu ◽  
...  
Keyword(s):  
Surface Tension ◽  
Ammonium Chloride ◽  
Butyl Acrylate ◽  
Antibacterial Properties ◽  
Light Transmittance ◽  
Trimethyl Ammonium Chloride ◽  
Kaolin Suspension ◽  
Surface Activities ◽  
Hydrophobic Monomer ◽  
Good Surface

Abstract Three cationic copolymers methacryloxyethyl trimethyl ammonium chloride-butyl acrylate-acrylamide (MTAC-BA-AM terpolymer) were designed and synthesized by emulsion polymerization. Their structures were confirmed by FT-IR and 1H NMR. The effect of content of hydrophobic monomer butyl acrylate (BA) in MTAC-BA-AM terpolymer on surface activities, flocculation and antibacterial properties were investigated. The study of surface tension shows that MTAC-BA-AM terpolymer has good surface activity due to the introduction of hydrophobic monomer BA. The flocculation experiment showed that the light transmittance of the kaolin suspension supernatant was 98.13% when the dose of MTAC-BA-AM terpolymer in the kaolin suspension was 0.03 mg/L, which was obviously better than the P(MTAC-AM) (91.02%) without hydrophobic modification of BA. The bacteriostatic experiment of MTAC-BA-AM terpolymer showed that as the content of hydrophobic monomer BA in MTAC-BA-AM terpolymer increased the inhibitory rate of MTAC-BA-AM terpolymer aginst Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus)

scholarly journals Understanding the Reaction Crystallization Process of Glycidyl Trimethyl Ammonium Chloride

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 449
Author(s):  
Shuai Yu ◽  
Hui Chen ◽  
Xujie Gao ◽  
Weichun Feng ◽  
Wenguo Xing ◽  
...  
Keyword(s):  
Ammonium Chloride ◽  
Crystallization Process ◽  
Crystal Form ◽  
Trimethyl Ammonium Chloride ◽  
Key Factors ◽  
Factors Affecting ◽  
Seed Dispersion ◽  
Seed Growth ◽  
Seed Method ◽  
Crystal Seed

Reaction crystallization to produce glycidyl trimethyl ammonium chloride (GTA) via epichlorohydrin with gas-state trimethylamine was investigated. The crystallization process of the GTA gas-liquid reaction was optimized by a seed method. The optimized technology can prepare GTA products with crystal form and purity greater than 97%. The crystallization process of GTA consists of four steps (i.e., addition of seed, dispersion of seed, growth of crystals on the seed surfaces, agglomeration and growth of crystal). Seed method and flow rate are the key factors affecting purity. The purity and particle size of GTA crystals were satisfactory as long as the operation was kept within the defined envelope. The experiments were conducted on a 1 L reactor and successfully scaled-up to 3000 L in industry.

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