PVDF Membrane Morphology - Influence of Polymer Molecular Weight and Preparation Temperature

• DOI: 10.20944/preprints201711.0080.v1
• Publication Date: 2017-11-17T03:14:43Z
• Authors: Monika Haponska; Anna Trojanowska; Adrianna Nogalska; Renata Jastrzab; Tania Gumi; Bartosz Tylkowski
• Keywords: Phase inversion

The global polyvinyldene flouride market is estimated to reach $937,278.5 thousand by 2019, therefore develop new membranes and gain pioneering ideas, which could create innovative business opportunities, a fundamental knowledge about membrane properties fabricated from recent commercially available PVDF polymers highly mandatory. In this study, we successfully prepared nine non-woven supported using phase inversion precipitation method starting 15 wt% solution in N-methyl-2-pyrrolidone. Various morphologies were obtained (1) with diverse molecular weight range 300.000 Da 700.000 (2) different temperatures of the coagulation bath (20, 40, 60 ±2°C) used for films precipitation. Environmental Scanning Electron Microscope (ESEM) was surface cross-section characterization.  Atomic Force (AFM) employed investigate roughness, while Contact Angle (CA) instrument wettability studies. Fourier Transform Infrared Spectroscopy (FTIR) results show that are formed mixture TGTG’ chains α crystalline domains all-TTTT trans planar zigzag characteristic β phase. Moreover, generated indicate phases content depend on polymer conditions preparation. diversity be applied End User Industries applications.