聚電解質(zhì)：溶液性能和在造紙中的應(yīng)用
為了確定導(dǎo)致較佳聚合物溶液的參數(shù)及其在造紙過程中的較佳用途，特別是基于聚丙烯酰胺的不同PEL顆粒用不同的技術(shù)方法溶解(超聲處理，使用DISPERMAT分散機和Ultra-Turrax等)。 隨后，溶解狀態(tài)尤其通過流變學表征。儲存(G')和損失(G“)模量的確定允許在聚合物鏈的纏結(jié)方面陳述聚合物溶液的內(nèi)部結(jié)構(gòu)。 基于每種溶液狀態(tài)的流動電位，通過PEL滴定測定溶液中PEL的電荷密度。
Polyelectrolytes: solution behavior and application in papermaking
To determine the parameters which lead to optimal polymer solutions and their optimum use in the papermaking process different PEL granulates particularly based on polyacrylamide were dissolved with different technical methods (ultrasonic treatment, using a DISPERMAT dissolver and Ultra-Turrax? etc.).Subsequently, the states of dissolving were characterized especially by rheology. The determination of storage (G′) and loss (G′′) modulus allows statements to the inner structure of the polymer solutions in terms of entanglements of polymer chains. Charge densities of the PEL in solution were determined by PEL titration based on streaming potential in each solution state.
