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技術名稱 Technology
發明人 Inventor
黃岳翰, 王孟菊, 鍾台生,
所有權人 Asignee 國立臺灣科技大學

專利國家 Country 申請號 Application No. 專利號 Patent No. 中心案號 Serial No.
中華民國 112140922 申請中 1120048TW0
  點閱數:115

技術摘要:
Demands on superhydrophobic, self-cleaning and piezoelectric membranes have gained significantly due to their potential to overcome global shortages in clean water and energy. In this study, we have discovered a novel plasma-assisted nonsolvent induced phase separation (PANIPS) method to prepare superhydrophobic, self-cleaning and piezoelectric PVDF membranes without additional chemical modifications or post-treatments. The PANIPS membranes exhibit remarkable water contact angles ranging from 151.2° to 166.4° and sliding angles between 6.7° and 29.7°. Moreover, the PANIPS method also induces a rapid α/β → β/γ phase transition in the PVDF membranes, significantly enhancing their piezoelectric responses from 0.73 Vpp to 10 Vpp. The mechanism behind PANIPS involves the bombardment of water ion clusters that locally coarsens the membrane surface, leading to a highly porous and hierarchical micro/nanostructured morphology. The anti-wetting ability of the PANIPS membranes was confirmed by direct contact membrane distillation (DCMD) tests to treat the hypersaline solutions containing 10 wt% NaCl and a Rose Bengal dye of 1000 ppm. This study may provide valuable insights to fabricate PANIPS membranes and open up new avenues to molecularly design advanced superhydrophobic, self-cleaning, and piezoelectric membranes in the fields of clean water production, motion sensor, piezoelectric nanogenerator and CO2 capture.

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