Switch Effect, Water‐Like State, and New Interaction Mechanism of an H‐Bonded Polycation–Polyacrylamide System to Realize Instant Decolorization of Dyeing Wastewater,Advanced Sustainable Systems

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Switch Effect, Water‐Like State, and New Interaction Mechanism of an H‐Bonded Polycation–Polyacrylamide System to Realize Instant Decolorization of Dyeing Wastewater
Advanced Sustainable Systems ( IF 6.5 ) Pub Date : 2019-07-19 , DOI: 10.1002/adsu.201900029
Hongyan Li ₁ , Junhong Zhao ₁ , Yu Bai ₁ , Chunli Song ₁ , Yikai Yu _{1,

2}

Affiliation

A switch for controlling hydrogen bonds is incorporated into a polymer‐based system of polyamine polycation and polyacrylamide, with an ultrahigh molecular weight of 18 million; a surprising process results whereby the apparent viscosity of the whole system suddenly plunges from 321 cps to below 6.5 cps, forming a new water‐like phase state (WLPS) of an H‐bonded polymer‐based system. When WLPS products are used as decolorant materials to purify dyeing wastewater, they can flow similar to water during mass transfer and be quickly dissolved, immediately interacting with the anionic dyes in water. This observation is the first of a sudden change in apparent viscosity and the formation of a water‐like state in a polymer‐based system. Moreover, due to the switch effect to control hydrogen bonds, WLPS decolorants can change from water‐like states to strong hydrogen bonding states after interacting with anionic dyes, thus increasing the attractive forces of formed flocs to realize the instantaneous and highly adaptable decolorization of dyeing wastewater. It only took 10 s for the WLPS decolorants to remove more than 95% of various dyes in dyeing wastewater. Subsequently, a series of new cohesive floc structure–forms are first discovered by a computer imaging optical microscope.

中文翻译：

H键聚阳离子-聚丙烯酰胺体系的开关效应，类似水的状态和新的相互作用机理，实现了印染废水的即时脱色

基于聚合物的聚胺聚阳离子和聚丙烯酰胺体系中装有控制氢键的开关，其超高分子量为1800万；结果出乎意料，整个系统的表观粘度突然从321 cps下降到6.5 cps以下，形成了氢键聚合物基体系的新的水状相态（WLPS）。当WLPS产品用作脱色剂材料来净化印染废水时，它们在传质过程中可以像水一样流动并迅速溶解，立即与水中的阴离子染料相互作用。该观察结果是表观粘度突然变化并在聚合物基体系中形成水样状态的第一个结果。而且，由于控制氢键的开关效应，与阴离子染料相互作用后，WLPS脱色剂可从类水态变为强氢键态，从而增加了形成的絮体的吸引力，从而实现了染色废水的瞬时且高度适应性的脱色。WLPS脱色剂只需10秒钟即可去除染色废水中95％以上的各种染料。随后，首先通过计算机成像光学显微镜发现了一系列新的内聚絮状结构形式。

更新日期：2019-10-14

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