Find the properties of dimethyldiallylammonium chloride

What network are you on? LAN? Dimethyl diallyl ammonium chloride CA registration number: 7398-69-8 English name: Dimethyl diallyl ammonium chloride alias: Cationic monomer DMDAAC molecular formula: Cl use: It is widely used in oilfield additives, sewage treatment, printing and dyeing, papermaking, daily chemicals, pharmaceuticals, textiles, leather and other industries. Under normal circumstances, the co-aggregation of 1, 6-dienes produces five- or six-membered rings on the main chain. DMDAAC only forms a five-membered ring when reacted as a monomer. When detected using 13 C-NMR spectroscopy, only the quaternary pyrrolidine configurational isomer was found. By changing the synthesis conditions, such as changing the solvent, anion or radiation initiation, or replacing the N atoms in the structure with other atoms, all of which have a significant impact on the size of the ring, the ratio of cis to trans structures 6 : 1 did not notice any changes. In the case of 1,6 diene symmetry, the degree of cyclization is generally relatively high. This general rule also applies to DMDAAC. PDMDAAC obtained by solution polymerization of 203 Hg-acetate contains only 0.1-3% double bonds. The cyclization growth rate constant is two orders of magnitude larger than the linear growth rate constant for formation with dangling double bonds. Therefore, PDMDAAC mainly contains a cyclic structure formed by connecting - CH2 - CH2 - at the 3 and 4 positions of the monomer, and a small amount of structures with pendant double bonds formed due to the linear polymerization of the monomer. PDMDAAC and P(DMDAAC/AM) are white water-absorbing powders or granules, and their shapes vary depending on the polymerization method. Soluble in water, methanol and glacial acetic acid, insoluble in other solvents ； Products are generally aqueous solutions. It is neutral and slightly yellow when dry. At room temperature, PDMDAAC aqueous solution is stable in the range of pH = 0.5 ~ 14, and P(DMDAAC/AM) aqueous solution undergoes partial hydrolysis in alkaline medium. Both homopolymer and copolymer molecules are positively charged, aqueous solutions and hygroscopic solid powders are conductive, and the conductive mechanism is ion migration conduction. Huang and Reichert studied the thermal weight loss of PDMDAAC in different temperature ranges. 53.3 ~ 130 ℃ weight loss is due to water loss ； Remains unchanged between 130 ~ 200 ℃ ； The weight loss of 41.4% at 200 ~ 310 ℃ is due to thermal decomposition. No melting point was found during the entire heating process. The glass transition temperature of PDMDAAC with a molecular weight of 3.3 × 10 4 is 8 °C. The viscosity behavior of PDMDAAC aqueous solutions exhibits significant polyelectrolyte effects. The intrinsic viscosity decreases with the increase of the added salt concentration. When the NaCl concentration is greater than 1M, the change of the intrinsic viscosity with the added salt concentration is relatively small. Use an Ubbelohde viscometer to measure the intrinsic viscosity in a 1M NaCl solution at 30°C. The viscosity average molecular weight can be obtained according to the formula. http://www.hudong.com/wiki/%E4%BA%8C%E7%94%B2%E5%9F%BA%E4%BA%8C%E7%83%AF%E4%B8%99%E5%9F%BA%E6%B0%AF%E5%8C%96%E9%93%B5