We propose a new method of using high-density polyethylene (HDPE) ultrafiltration hollow fibers, which are inexpensive but difficult to use as a dehumidification membrane. Dehumidification membranes have a wide range of applications and can also offer the benefit of water recovery. Conventional membranes for gas separation consist of a substrate and a thin layer that selectively permeates a desired gas. However, low-cost substrates such as HDPE are limited in their application due to the presence of large pores that prevent defect-free thin layer formation. To address the issue of large pores, we utilized hydrogels made from viscous solutions, that can be stably positioned in large pores. Specifically, we filled the pores of the HDPE substrate with hydrogels consisting of glycerin, polyvinyl alcohol (PVA), and glutaraldehyde (GA). The pore-filled membranes capable of separating water vapor were 40GPGM and 50GPGM, which were filled with 40GPM (40 wt% glycerin/1 wt% PVA/0.5 wt% GA) and 50GPG (50 wt% glycerin/1 wt% PVA/0.5 wt% GA), respectively. Since the pore-filled membranes were filled with viscous hydrogels, they could be washed and recharged. Accordingly, they showed good rechargeability when measuring properties during multiple pore-filling and washing processes. The water vapor permeance/selectivity/water flux of the pore-filled membranes were measured at various temperatures and feed flow rates. The water vapor permeance/selectivity/water flux of 40GPGM and 50GPGM measured at 35 °C and 3.5 L/min were 3400 GPU/110/0.12 kg/m²∙hr and 2398 GPU/469/0.14 kg/m²∙hr, respectively. After continuous operation for 30 days, it was confirmed that the pore-filled membranes had good long-term stability.

我们提出了一种使用高密度聚乙烯 (HDPE) 超滤中空纤维的新方法，这种纤维价格低廉但难以用作除湿膜。除湿膜具有广泛的应用范围，还可以提供水回收的好处。用于气体分离的常规膜由基材和选择性渗透所需气体的薄层组成。然而，由于存在阻止无缺陷薄层形成的大孔隙，HDPE 等低成本基材的应用受到限制。为了解决大毛孔的问题，我们使用了由粘性溶液制成的水凝胶，它可以稳定地定位在大毛孔中。具体来说，我们用由甘油、聚乙烯醇 (PVA) 和戊二醛 (GA) 组成的水凝胶填充 HDPE 基材的孔隙。能够分离水蒸气的孔隙填充膜为 40GPGM 和 50GPGM，其中填充有 40GPM（40 wt% 甘油/1 wt% PVA/0.5 wt% GA）和 50GPG（50 wt% 甘油/1 wt% PVA/0.5重量％GA），分别。由于孔隙填充膜中充满了粘性水凝胶，因此可以清洗和充电。因此，在多次孔隙填充和洗涤过程中测量性能时，它们显示出良好的可充电性。在不同的温度和进料流速下测量了孔隙填充膜的水蒸气渗透率/选择性/水通量。40GPGM和50GPGM在35℃、3.5L/min条件下测得的水蒸气透过率/选择性/水通量分别为3400GPU/110/0.12kg/m 5 wt% GA）和 50GPG（50 wt% 甘油/1 wt% PVA/0.5 wt% GA）。由于孔隙填充膜中充满了粘性水凝胶，因此可以清洗和充电。因此，在多次孔隙填充和洗涤过程中测量性能时，它们显示出良好的可充电性。在不同的温度和进料流速下测量了孔隙填充膜的水蒸气渗透率/选择性/水通量。40GPGM和50GPGM在35℃、3.5L/min条件下测得的水蒸气透过率/选择性/水通量分别为3400GPU/110/0.12kg/m 5 wt% GA）和 50GPG（50 wt% 甘油/1 wt% PVA/0.5 wt% GA）。由于孔隙填充膜中充满了粘性水凝胶，因此可以清洗和充电。因此，在多次孔隙填充和洗涤过程中测量性能时，它们显示出良好的可充电性。在不同的温度和进料流速下测量了孔隙填充膜的水蒸气渗透率/选择性/水通量。40GPGM和50GPGM在35℃、3.5L/min条件下测得的水蒸气透过率/选择性/水通量分别为3400GPU/110/0.12kg/m 在不同的温度和进料流速下测量了孔隙填充膜的水蒸气渗透率/选择性/水通量。40GPGM和50GPGM在35℃、3.5L/min条件下测得的水蒸气透过率/选择性/水通量分别为3400GPU/110/0.12kg/m 在不同的温度和进料流速下测量了孔隙填充膜的水蒸气渗透率/选择性/水通量。40GPGM和50GPGM在35℃、3.5L/min条件下测得的水蒸气透过率/选择性/水通量分别为3400GPU/110/0.12kg/m^分别为2 ∙hr 和 2398 GPU/469/0.14 kg/m ² ∙hr。连续运行30天后，证实该孔隙填充膜具有良好的长期稳定性。