离子型聚丙烯酰胺原位修饰聚氨酯泡沫用于高效乳液分离

doi:10.11896/cldb.21060195

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Abstract The separation of emulsions containing surfactants is one of the most challenging difficulties in the field of pollutant treatment. In this study, various ionic polyacrylamide modified polyurethane (PAM@PU) foams were successfully prepared by in-situ foaming modification. The use of polyacrylamide (PAM) increases the hydrophobicity of polyurethane (PU) foam, which allows it a water contact angle (WCA) of (143±3)° and also provides good acid, alkali, salt, and physical wear resistance. With the addition of cationic and anionic PAM, the compressive stress of PU foam rises from 7.6 kPa (pure PU) to 25.5 kPa and 21.6 kPa, respectively, which enhances the mechanical characteristics of PU and is helpful to its practical application. It's worth noting that PAM@PU has a high separation efficiency for emulsions stabilized with various surfactants. For cationic surfactant stabilized emulsions, anionic polyacrylamide composite polyurethane foam (APAM@PU) has a separation efficiency of 92.27%, 22.17% higher than PU, while cationic polyacrylamide composite polyurethane foam (CPAM@PU) has a separation efficiency of 84.15% for anionic surfactant stabilized emulsions, 10.92% higher than PU. This research offers a fresh perspective on the design and development of effective demulsifying materials.

Key words： polyurethane foam ionic polyacrylamide composite materials emulsion separation

Published: 10 October 2022 Online: 2022-10-12

CLC number:

O648

Fund:Sichuan Science and Technology Program (2020ZDZX0008) and Scientific Research Starting Project of SWPU (2021QHZ015)

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	Articles by authors
	FAN Leiyi
	WANG Rui
	HE Ruijie
	ZHANG Ruiyang
	ZHANG Qian
	ZHOU Ying

Cite this article:

FAN Leiyi,WANG Rui,HE Ruijie, et al. In-situ Modification of Polyurethane Foams by Ionic Polyacrylamide for Highly-efficient Emulsion Separation[J]. Materials Reports, 2022, 36(19): 21060195-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21060195 OR http://www.mater-rep.com/EN/Y2022/V36/I19/21060195

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