论文部分内容阅读
本方法能简便地测定水中微量聚丙烯酰胺(P_(AM))以及丙烯酰胺与丙烯酸的共聚物(P_(AM-AA))。对分析添加纸干强度补强剂P_(AM-AA)后抄纸白水中P_(AM-AA)的含量,进一步研究纸张纤维对P_(AM-AA)的吸附量和吸附机理,控制抄纸过程循环用水中P_(AM-AA)的加入量等工作,都有很大实用意义。本文用不同浓度P_(AM-AA)的水溶液,做吸光度对浓度的响应曲线,确定了线性范围。并系统地研究了P_(AM-AA)特性粘数(〔η〕)不同和抄纸白水中所含各添加剂对分析结果的影响。 (一)仪器与试剂比色计:72型分光光度计。显色剂:称2.5g土豆淀粉于300ml烧杯中,加入250ml蒸馏水,在不断搅拌下加热至65℃,静置20分钟后离心过滤;将上层
The method can be used for the simple determination of trace polyacrylamide (P_ (AM)) in water and the copolymer of acrylamide and acrylic acid (P_ (AM-AA)). The paper analyzed the content of P_ (AM-AA) in papermaking white water by adding paper strength reinforcing agent P_ (AM-AA), further studied the adsorption capacity and adsorption mechanism of P_ (AM-AA) Process cycle water P_ (AM-AA) added amount of work, have great practical significance. In this paper, with different concentrations of P_ (AM-AA) in aqueous solution, the absorbance of the concentration response curve to determine the linear range. The influence of the difference of intrinsic viscosities ([η]) and the additives in papermaking white water on the analytical results was systematically studied. (A) Instruments and reagents colorimeter: 72 spectrophotometer. Color reagent: Weigh 2.5g potato starch in 300ml beaker, add 250ml of distilled water, stirring constantly heated to 65 ° C, allowed to stand for 20 minutes after centrifugation; the upper layer