Analyses of sulfonamide antibiotics by CEC using poly(divinylbenzene-1-octadecene-vinylbenzyl trimethyl ammonium chloride) monolithic columns

2009 ◽  
Vol 30 (22) ◽  
pp. 3828-3837 ◽  
Author(s):  
Cheng-Lan Lin ◽  
Yi-Jie Cheng ◽  
Hsi-Ya Huang ◽  
Szetsen Lee
Keyword(s):  
Ammonium Chloride ◽  
Monolithic Columns ◽  
Trimethyl Ammonium Chloride ◽  
Sulfonamide Antibiotics

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.

Electroresponsive Property of Novel Poly(acrylate- acryloyloxyethyl trimethyl ammonium chloride)/Clay Nanocomposite Hydrogels

2009 ◽  
Vol 79-82 ◽  
pp. 2263-2266 ◽  
Author(s):  
Peng Li ◽  
Nam Hoon Kim ◽  
Sambhu Bhadra ◽  
Joong Hee Lee
Keyword(s):  
Electric Field ◽  
Ammonium Chloride ◽  
Clay Content ◽  
Cathode Side ◽  
Trimethyl Ammonium Chloride ◽  
Anode Side ◽  
Nacl Solution ◽  
Nanocomposite Hydrogels ◽  
Excellent Mechanical Property ◽  
Cross Linker

The poly(acrylate-acryloyloxyethyl trimethyl ammonium chloride)/clay nanocomposite hydrogels (poly(AAc-DAc)/clay NC gels) with different clay contents were prepared by using clay as a cross-linker. The hydrogel exhibited good electroresponsive property and excellent mechanical property. The hydrogels initially bent toward the cathode side followed by anode side under an electric field. Concentrations of NaCl solution, voltage of electric field and clay content of the hydrogels have significant effects on the electroresponsive property of the hydrogels. Clay exhibited two opposite effects on the electroresponsive property of NC gels.

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