Research Article

Flavonoids from Peony Seed Meal by Nanofiltration Membrane Separation

Table 1

Physical properties of membranes.

SamplePore size (mm)Porosity (%)AdvantageShortcomingManufacturer

PP0.22Low density, good mechanical properties, easy to form.Its hydrophobicity and surface inertia affect the practical application of some aspects, such as the surface being easy to cause protein and platelet adhesion and easily causing a bacterial infection.Zhejiang, P. R. China
PVDF0.22It has good mechanical properties, film-forming properties, excellent corrosion resistance, and chemical stability.It burns with fluorine smoke and is not easy to bond.Zhejiang, P. R. China
CA0.22Rich source, low price, good film formation, and biocompatibility.The elongation at break is lower under dry conditions, and the texture is brittle.Zhejiang, P. R. China
PES0.22Excellent heat resistance, physical and mechanical properties, and insulation properties.In the treatment of wastewater, the driving force is high and it is easy to pollute, thus reducing the separation efficiency, increasing the operating cost of equipment, and shortening the service life of the membrane.Zhejiang, P. R. China
PA0.22Good mechanical properties, good wear resistance, good chemical stability, and strong solvent resistance.Affected by temperature and water absorption, it has general weather resistance and poor thermal stability.Zhejiang, P. R. China