Tohoku University · Environmental Science
Professor Qian Li's research lab specializes in advanced polymer membrane development with a focus on polyvinylidene fluoride (PVDF)-based materials for water treatment and separation technologies. The lab investigates membrane fabrication, surface modification, and functionalization using techniques such as atomic transfer radical polymerization (ATRP) and solvent engineering to enhance hydrophilicity, permeability, and antifouling properties. Key research directions include the design of zwitterionic coatings for improved membrane performance and the optimization of solvent systems to tailor membrane morphology and separation efficiency.
Figures are computed from collected data and may differ slightly.
Abstract Polyvinylidene fluoride (PVDF) microporous flat membranes were cast with different kinds of PVDFs and four mixed solvents [trimethyl phosphate (TMP)– N,N ‐dimethylacetamide (DMAc), triethyl phosphate (TEP)–DMAc, tricresyl phosphate (TCP)–DMAc, and tri‐ n ‐butyl phosphate (TBP)–DMAc]. The effects of different commercial PVDFs (Solef® 1015, FR 904, Kynar 761, Kynar 741, Kynar 2801) on membrane morphologies and membrane performances of PVDF/TEP–DMAc/PEG200 system were investigated. The mem
Abstract Two sulfobetaine‐based zwitterionic monomers, including 3‐(methacryloylamino) propyl‐dimethyl‐(3‐sulfopropyl) ammonium hydroxide (MPDSAH) and 2‐(methacryloyloxyethyl) ethyl‐dimethyl‐(3‐sulfopropyl) ammonium (MEDSA) were successfully grafted from poly(vinylidene fluoride) (PVDF) hollow fiber membrane outside surface via chemical activation and atom transfer radical polymerization (ATRP). The ATRP time at 2 h under the 2 mol/L of zwitterionic monomers was the minimum period for the comple
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