Azman Muhammad Imran, Chungprempree Jirasuta, Preechawong Jitima, Sapsrithong Pornsri, Nithitanakul Manit
The Petroleum and Petrochemical College, Chulalongkorn University, Chula Soi 12, Wangmai Pathumwan, Bangkok 10330, Thailand.
Division of Polymer Engineering Technology, Department of Mechanical Engineering Technology, College of Industrial Technology, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand.
Polymers (Basel). 2021 Jul 9;13(14):2247. doi: 10.3390/polym13142247.
In this study, we used amines electrolyte solution with layer-by-layer (LbL) technique to modify and increase the CO adsorption capacity of highly porous polymer from high internal phase emulsion template polymer. This perspective presents the extraordinary versatility of emulsion templating polymerization, which has emerged with the growing numbers of HIPE systems and modification. In this study, we used polyHIPE prepared from styrene (S) and divinylbenzene (DVB) with varying ratios; 80:20, 20:80, and 0:100 to improve the surface area, thermal properties, and mechanical properties of the materials. Furthermore, the surface of the polyHIPE was modified by LbL technique to increase the adsorption efficiency. This technique consisted of two main layers, the primary layer of poly(diallyldimethylammonium chloride) (PDADMAC) and polystyrene sulfonate (PSS) and the secondary layer, which was the CO adsorbing layer, of polyethylene imine (PEI) or tetraethylene pentamine (TEPA). Poly(S/DVB)HIPE modified by PEI terminated as the secondary coating showed the highest CO adsorption capacity, with up to 42% (from 0.71 to 1.01 mmol/g). The amine-multilayered modified material still possessed an open cell structure, since the solution did not block the pore structure of the poly(S/DVB)HIPE and was suitable for being used as an adsorbent in adsorption technology.
在本研究中，我们使用胺电解质溶液和层层（LbL）技术对由高内相乳液模板聚合物制成的高度多孔聚合物进行改性，以提高其对CO的吸附能力。这一观点展示了乳液模板聚合的非凡通用性，随着高内相乳液（HIPE）体系及改性方法数量的不断增加，该技术应运而生。在本研究中，我们使用由不同比例的苯乙烯（S）和二乙烯基苯（DVB）制备的聚高内相乳液；80:20、20:80和0:100，以改善材料的表面积、热性能和机械性能。此外，通过LbL技术对聚高内相乳液的表面进行改性，以提高吸附效率。该技术由两个主要层组成，第一层是聚二烯丙基二甲基氯化铵（PDADMAC）和聚苯乙烯磺酸盐（PSS），第二层是作为CO吸附层的聚乙烯亚胺（PEI）或四乙烯五胺（TEPA）。经PEI改性作为第二涂层的聚（S/DVB）高内相乳液表现出最高的CO吸附容量，高达42%（从0.71提高到1.01 mmol/g）。胺多层改性材料仍具有开孔结构，因为该溶液没有堵塞聚（S/DVB）高内相乳液的孔结构，适合用作吸附技术中的吸附剂。
