為了確定導(dǎo)致(zhì)較佳聚合物溶(róng)液的參數(shù)及其在造紙過(guò)程(chéng)中的較(jiào)佳用途,特別(bié)是基(jī)於聚(jù)丙烯酰胺的不(bù)同(tóng)PEL顆粒用(yòng)不同的(dí)技術方法(fǎ)溶解(jiě)(超(chāo)聲(shēng)處理,使(shǐ)用DISPERMAT分散機和(hé)Ultra-Turrax等(děng))。 隨後,溶解(jiě)狀態尤(yóu)其(qí)通(tōng)過(guò)流(liú)變學表征。儲(chǔ)存(G')和(hé)損(sǔn)失(shī)(G“)模量的(dí)確(què)定允許在(zài)聚合物鏈(liàn)的纏(chán)結方麵(miàn)陳(chén)述聚合物溶液(yè)的(dí)內(nèi)部結(jié)構(gòu)。 基於(yú)每種(zhǒng)溶(róng)液(yè)狀態的流動電位,通過PEL滴定(dìng)測定溶液(yè)中(zhōng)PEL的(dí)電荷密(mì)度。
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.