Preparation method for nanocomposite fiber membrane material based on bio-based liquefied formaldehyde resin

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United States of America

PATENT NO 12161995
SERIAL NO

18676521

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A preparation method for a nanocomposite fiber membrane material based on a bio-based liquefied formaldehyde resin is provided. A bio-based raw material is processed through a phenol/polyethylene glycol complex liquefaction process, followed by divalent alkali metal hydroxide high ortho-position induction synthesis resinification and modification with the polymer polyvinyl alcohol to create a spinnable precursor as PVA-BLF. Subsequently, a coaxial electrospinning device is utilized, where PVA-BLF serves as a core layer and a titanium dioxide dispersion is used as a shell layer, to fabricate a PVA-BLF/TiO2 nanocomposite fiber membrane material. The average diameter of the nanocomposite fiber membrane is 150-450 nm, and the specific surface area is 500-700 m2/g. The porosity exceeds 60%, and the fracture elongation ranges from 5.5% to 6.5%, demonstrating excellent filtration performance and excellent regeneration performance, which can be developed as adsorption materials for water and air purification.

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Patent Owner(s)

Patent OwnerAddress
NANJING FORESTRY UNIVERSITYNANJING CITY JIANGSU PROVINCE 210037 LONGPAN ROAD XINZHUANG NO 159 NANJING CITY JIANGSU PROVINCE 210037
AICA NANJING CO LTDNO 59 CHONGFU ROAD NANJING 210047

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dong, Yundan Nanjing, CN 1 0
Qi, Yangyan Nanjing, CN 1 0
Sun, Fengwen Nanjing, CN 9 212
Zhang, Qian Nanjing, CN 942 7505
Zhang, Zhang Nanjing, CN 221 2480

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