Atmospheric Drying UHMWPE Membranes via Multiple Stage Extractant Exchange Drying Technique

Jiayou Quan; Qingquan Song; Junrong Yu; Yan Wang; Jing Zhu; Zuming Hu

doi:10.1007/s42765-021-00102-x

Advanced Fiber Materials ›› 2021, Vol. 4 ›› Issue (2) : 235 -245. DOI: 10.1007/s42765-021-00102-x

Research Article

Atmospheric Drying UHMWPE Membranes via Multiple Stage Extractant Exchange Drying Technique

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¹State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 201620, Shanghai, China

^c yjr@dhu.edu.cn

Jiayou Quan

received his B.S. degree at Donghua University in 2017. He is studying in Donghua University for pH.D. degree. His research interest is the preparation and application of UHMWPE membranes and fibers.

Qingquan Song

is studying in Donghua University for pH.D. degree, majoring in polymer materials and engineering. His main research interest is the preparation of modified of PMIA fibers.

Junrong Yu

is a Professor in Donghua University. Her main research is high performance fibers (UHMWPE fibers and aramid fibers), the synthesis of high-performance polymers and fiber modification.

Yan Wang

is an Associate Professor in Donghua University. His current research focuses on high-performance polymers, functional polymers, polymer nanocomposites.

Jing Zhu

is an engineer in Donghua University. Her research focuses on aramid fibers, and high-performance polymers.

Zuming Hu

is a Professor in Donghua University. His research focuses on high performance fibers, and composites.

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Abstract

Ultra-high molecular weight polyethylene (UHMWPE) membranes were prepared by 5 wt% UHMWPE/paraffin oil gels via thermally induced phase separation method and dried in air without significant collapse. The UHMWPE membranes were annealed at 110 °C for increasing the pores size in order to decrease the capillary forces. Furthermore, a new multiple stage extractant exchange drying (MSEED) technique was adopted to decrease the shrinkage of the UHMWPE membranes. Specifically, the paraffin oil was extracted by dichloromethane, then dichloromethane was replaced by ethanol, next ethanol could be exchanged to other liquid which is non-affinity with UHMWPE, for example water. UHMWPE membranes (annealing for 25 min) dried by dichloromethane-ethanol–water-air process have the lowest volume shrinkage of 16.5% and the porosity is as high as 88.29%. Moreover, compared with supercritical CO₂ (SC-CO₂) drying, atmospheric drying UHMWPE membranes have a lower pure water permeance, but a higher carbon particles rejection.

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Jiayou Quan, Qingquan Song, Junrong Yu, Yan Wang, Jing Zhu, Zuming Hu. Atmospheric Drying UHMWPE Membranes via Multiple Stage Extractant Exchange Drying Technique. Advanced Fiber Materials, 2021, 4(2): 235-245 DOI:10.1007/s42765-021-00102-x