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首页> 外文期刊>Polymers research journal >Influence of Polyethylene Glycol 600 on Cellulose Acetate Membranes for Reverse Osmosis Desalination
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Influence of Polyethylene Glycol 600 on Cellulose Acetate Membranes for Reverse Osmosis Desalination

机译：聚乙二醇600对醋酸纤维膜反渗透淡化的影响

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摘要

In this study blended membranes of cellulose acetate (CA) for reverse osmosis (RO) were prepared by the embedding of polyethylene glycol (PEG600) as an additive at 8-10 wt. % to enhance desalination. The functional group analysis, thermal studies and morphology of these membranes were characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry/thermogravimetric analysis (DSC/TGA) and scanning electron microscope (SEM). The permeation flux g/m2 hr. and salt rejection % for different contents of PEG600 in the membrane was studied by indigenously fabricated reverse osmosis pilot plant. The FTIR band in the result confirms the existence of CA and PEG600. Thermal analysis depicts that with the increase in the concentration of PEG 600 in the CA membrane the thermal stability significantly improves when compared with the pristine CA membrane. SEM images exhibit that the membranes made by casting dissolution method are dense in nature. Reverse osmosis desalination results showed that the membrane containing 10 wt. % of PEG 600 has the flux of 510.3 g/m~2 hr. and highest salt rejection % i.e. 97.6% for the feed water of known conductance comprising 3.5 wt.% NaCl in water at 40 ℃.
机译：在这项研究中，通过嵌入8-10 wt。％的聚乙二醇（PEG600）作为添加剂，制备了用于反渗透（RO）的醋酸纤维素（CA）混合膜。 ％增强淡化。通过傅立叶变换红外光谱（FTIR），差示扫描量热/热重分析（DSC / TGA）和扫描电子显微镜（SEM）对这些膜的官能团分析，热学研究和形态进行了表征。渗透通量g / m2·hr。通过本地制造的反渗透中试植物研究了膜中PEG600不同含量的盐截留率。结果中的FTIR谱带确认了CA和PEG600的存在。热分析表明，与原始CA膜相比，随着CA膜中PEG 600浓度的增加，热稳定性显着提高。 SEM图像表明，通过流延溶解法制成的膜本质上是致密的。反渗透脱盐结果表明，该膜含10wt。 ％的PEG 600具有510.3g / m〜2小时的通量。对于电导率已知的进水，在40℃下含3.5 wt。％的NaCl，其最高的脱盐率即97.6％。

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