Properties Of PEO And It's Application In Papermaking Industry

With the development of papermaking industry, lots of chemicals were applied to the papermaking process to meet the demand for manufacturing various papers. Addition of these chemicals not only optimizes the whole production system but also greatly improve the paper properties. However, papermaking process is a very complex problem, in order to get a perfect effect, we must elect an applicable additive and it adding method in terms of practical production condition. Polyethylene oxide has gradually attained people recognition. Production of Creping paper and handchief paper increases very rapidly, which ask for good sopping properties, softness, appearance and strength.what more, the thin paper and straw fiber instead of cotton fiber will be development trend for decreasing cost. Therefore, we do a lot of studies on the raw material, process, equipment and chemicals in order to solve three practical problems. Firstly, decreasing beating degree, shorting beating time and saving energy. Secondly, ensuring papermaking normally and improving productive. Finally, increasing the paper brightness, softness and sopping properties. Application of PEO can solve the above three problems. In modem papermaking, wet-end papermaking chemistry is a complex problem. Various single, dual or multi-component retention aid systems are available, the manufacturers of each trying to capture their share of the retention aid market. But a low fist-pass retention of fines is often characteristic of the manufacture of paper grades containing a high percentage of a mechanical pulp. One approachtoward improvement is to use retention aids. However, these materials are not cost-effective because the high level of dissolution and dispersed anionic chemicals originating from the wood requires addition of an excess of cationic flocculent. High-molecular-weight polyethylene oxide is nonionic and there fore immune to this problem. As, a result, it has been found to be a very effective retention aid in these types of furnishes. A second component was often required for network properly. Cofactors containing phendic groups, such as Kraft lignin and phenolic resins were found to be effective. It was proposed that PEO and phenolics from a network in water in which fillers are captured and subsequently swept up by the fibers. In this paper, firstly we discuss the dispersent effect of PEO in handchief-paper. The results show that, the fibers are dispersed, drainage speeds are decreased and paper formation becomes better after adding PEO. Secondly, we use the dynamic drainage jar to evaluate the retention effect of PEO/PFR system and make a detail discussion about the influence factors. Finally, we try to replace PFR with lignin and it derivatives in retention system. The results indict retention effect and paper properties are improved and provide a new field for industrialized application of lignin. With the development of papermaking, more and more additives are used to improve the quality of paper. So we muse constantly adopt new technology and new materials to develop new chemicals for the papermaking industry. PEO, an anionic polymer of very high molecular weight, will be the most promising product in the feature.