Atsushi Matsuoka, Kana Kobayashi, Eiji Kamio, Tomohisa Yoshioka, Keizo Nakagawa, Yasunao Okamoto and Hideto Matsuyama*,
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Effect of Molecular Weight Distribution on Reverse Solute Flux of Polyalkylene Glycol-Based Draw Solutes
In forward osmosis, the reverse solute flux of draw solutes is a significant issue. Therefore, criteria for the chemical structural design of draw solutes to reduce the reverse solute flux are desired. Molecular weight distribution is an important characteristic of synthesized polymers; thus, in this study, the effect of molecular weight distribution on reverse solute flux was simulated using linear and tribranched polyalkylene glycol copolymers as draw solute examples. Consequently, for both linear and branched copolymers, the reverse solute flux decreased as the molecular weight distribution became sharper. In particular, for branched copolymers, the reverse solute flux decreased by about 40% when the molecular weight distribution was narrowed. Thus, it was confirmed that sharpening the molecular weight distribution is an effective strategy for reducing the reverse solute flux of polymer-based draw solutes.
期刊介绍：
ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.
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