The Differences Between PVDF and PTFE Membrane
PTFE stands for Poly Tetra Fluoroethylene. People generally call it non-sticking lining or easy-cleaning material. The material of PTFE has the characteristics of antiacid and antisolvent, which means it is hardly insoluble in all solvents. And PTFE is heat-resistant and with low friction coefficients. People always not only use it for lubricating but also regard it as the ideal coating material for the lining of water .
PTFE membrane is a kind of material named ultra-fine fiber glass coated with PTFE resins. Its durability、fireproofing and antifouling property are all outstanding. The PTFE membranes are usually white, have high transmittance and the ability to maintain its performance for more than 25 years.
PVDF is the abbreviation for Polyvinylidene Fluoride. PVDF membrane is from PVC membrane that is coated with PVDF resins on it, which is better than PVC membrane in durability. PVDF membrane is a kind of solid-phase carriers for the western blot in common use. It is hydrophobic.
The smaller the aperture of the PVDF membrane is, the firmer the PVDF membrane is. There is an interesting phenomenon that PVDF membranes are popular than PTFE membranes in the northern territory. Maybe the reason is that the glass transition temperature of PVDF membranes is close to 40 degrees below zero, it is better in low-temperature resistance.
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