Polyacrylamide manufacturer: What are the low molecular weight polyacrylamide? The industrial production of polyacrylamide has a history of several decades, and the production process has been improved. Now, PAM products according to molecular weight, there are mainly high, medium, low three, adjustable degree between 104-107.
Polyacrylamide manufacturers: low molecular weight products in the production process to each link of higher requirements. Production of low molecular weight PAM requirements raw material purity is relatively high, general industrial monomer containing iron, copper, O2 and other impurities, these impurities will hinder the reaction, so, in the use of acrylamide monomer, the content must be controlled in more than 95%. In the production of PAM, the initiator is mainly to cause oxidation – reduction reaction. The amount of initiator and the rate of addition also affect the production of low molecular weight products. The amount of initiator is small, can not cause polymerization reaction, initiator amount is large, the reaction speed is accelerated, polymer molecular chain is not easy to grow, the average degree of polymerization is reduced, the molecular weight is decreased. The speed and method of initiator addition affect the molecular weight of the polymer. A large number of practices have proved that the molecular weight of the polymer increases with the addition time, whereas the molecular weight of the polymer decreases. Therefore, in the production of low molecular weight products, strict control of initiator dosage and adding speed is a key link. The reaction temperature also directly affects the size of molecular weight. If the temperature is too high, the polymerization reaction will be intensified, resulting in the formation of detonation, which seriously affects the size of molecular weight and the solubility of the product. On the contrary, if the temperature is too low, the polymerization reaction can not be completely carried out, it will also affect the size of molecular weight. So, in production, this is as important as the use of initiators, requiring uniform requirements and strict control.
