What is a polyethersulfone filter?

What is a polyethersulfone filter?

Polyethersulfone (PES) membrane for aqueous solutions provides removal of fine particles, bacteria, and fungi making it a versatile membrane for applications such as sample preparation, sterile filtration and infusion therapy.

What is a hydrophilic filter?

Hydrophilic materials are water attractive or water “loving”, therefore hydrophilic filters are typically used in liquid filtration processes. The hydrophilicity of a filter allows polar liquids, like water, to interact more efficiently and maximize the filtration process.

What is polyethersulfone ultrafiltration membrane?

Polyethersulfone Ultrafiltration Membranes (UF Membranes) AMI® polyethersulfone (PES) spiral wound ultrafiltration(UF) membrane elements provide removal of fine particles from aqueous solutions to a molecular weight cut-off (MWCO) of 10,000. AMI membrane elements are among the finest in the industry.

What is polyethersulfone used for?

Polyethersulfone (PES), as shown in Figure ​1, is considered one of the well-known polymeric material to be used to make ultrafiltration (UF), microfiltration (MF), and gas separation membranes since it provides unique properties such as outstanding thermal, mechanical, hydrolytic strength in both hot and wet …

Is polyethersulfone hydrophilic or hydrophobic?

Polyethersulfone membrane are generally hydrophilic.

Is PVDF hydrophobic or hydrophilic?

Polyvinylidene Fluoride (PVDF) membrane is a naturally hydrophobic, unsupported membrane, it has received great attention because of its outstanding properties including high thermal stability, excellent mechanical strength and chemical resistance, which makes it has good resistance to organic solvents, corrosion.

What is hydrophilic membrane?

Hydrophilic membranes have an affinity to water. Their surface chemistry allows these materials to be wetted immediately. Hydrophilic membrane is extremely imperative in water treatment to avoid the fouling of organic matter on the membrane surface.

What is difference between hydrophilic and hydrophobic?

Materials with a special affinity for water — those it spreads across, maximizing contact — are known as hydrophilic. Those that naturally repel water, causing droplets to form, are known as hydrophobic.

Is polyethersulfone soluble in water?

Polysulfones are among the most commonly used polymeric materials [1], [2], [3]….1. Introduction.

Molar Mass 187.8 g/mol
Solubility at 23 °C – 50/50 v/v in water Miscible
Boiling Point (1013 hPa) 280 ± 2 °C
Density at 20 °C 1.043 ± 0.001 g/cm3

Why is polyethersulfone hydrophilic?

Polyethersulfone contains a sulfone (O=S=O) group in the main chain which is a polar group and it provides hydrophilicity to the membrane.

What is polyethersulfone membrane?

Polyethersulfone (PES) membrane is one of the. most important polymeric membrane and is widely used in separation fields. PES membranes show outstanding oxidative, thermal, and hydro- lytic stability as well as good mechanical prop- erty.

What is hydrophilic PVDF?

Product Description. MS® hydrophilic PVDF membrane is a kind of membrane with lower protein binding than other membranes such as Nylon/NC/PTFE,having high flow rate and high loading capacity at the same time. Therefore, it can be typically used in bacteria removal of culture media and any other protein solutions.

What are PVDF filters used for?

PVDF membrane filters are commonly used for purification during sterilizing or clarifying procedures. Sterile PVDF filter membranes are often used for biological sterilization filtration after hydrophilic treatment.

How does a hydrophilic membrane work?

Hydrophilic Membranes – Waterproof and Breathable By absorbing and removing water and sweat, these membranes provide waterproof and breathable qualities to any material, keeping users both dry and warm in even the toughest conditions.

Why is hydrophilic important?

Since water is the solvent in all cell cytosol, it is important that the outside of proteins be hydrophilic, so they can be dispersed and moved around the cell. Thus, a cell can create proteins in one place (usually the ribosomes), and have them distributed through the cell by diffusion.

Can air pass through hydrophilic filter?

Once wetted, hydrophilic filters do not allow the free passage of gases until the applied pressure exceeds the bubble point and the liquid is expelled from the pores of the membrane.

Is polyethersulfone biodegradable?

This material used for the first generation of Polymem hollow fibers, is resistant to chemicals (chlorine at high pH, soda, acids and other common washing agents), non-biodegradable and has excellent mechanical and thermal resistance.

Are PVDF filter hydrophobic or hydrophilic?

Polyvinylidene Fluoride (PVDF) membrane is a naturally hydrophobic, unsupported membrane, it has received great attention because of its outstanding properties including high thermal stability, excellent mechanical strength and chemical resistance, which makes it has good resistance to organic solvents, corrosion.

Is PVDF filter hydrophobic or hydrophilic?

What is a hydrophilic membrane?

A hydrophilic membrane exhibits an affinity for water. It possesses a high surface tension value and has the ability to form “hydrogen-bonds” with water. Particles that foul in aqueous media tend to be hydrophobic, e.g. colloids, proteins, clays, oily particles (hydrocarbons, surfactants, greases).

What are examples of hydrophilic?

Examples of hydrophilic liquids include ammonia, alcohols, some amides such as urea and some carboxylic acids such as acetic acid.

Is Polyethersulfone the same as polysulfone?

The term “polysulfone” is normally used for polyarylethersulfones (PAES), since only aromatic polysulfones are used commercially. Furthermore, since ether groups are always present in these polysulfones, PAESs are also referred to as polyether sulfones (PES), poly(arylene sulfone)s or simply polysulfone (PSU).

What is the difference between PTFE and PVDF?

The big difference between PTFE and PVDF is that PTFE membranes can be used in the filtration of strong acids and aggressive solutions, but PVDF membranes are more suited for the filtration of non-aggressive aqueous and mild organic solutions. Also there are some similarities between these two membranes.

What is hydrophilic used for?

Hydrophilic membrane filtration is used in several industries to filter various liquids. These hydrophilic filters are used in the medical, industrial, and biochemical fields to filter elements such as bacteria, viruses, proteins, particulates, drugs, and other contaminants.


Summary – PVDF vs PTFE PVDF and PTFE are short terms for polyvinylidene fluoride and polytetrafluoroethylene, respectively. The key difference between PVDF and PTFE is that PVDF has comparatively a low density, whereas PTFE has comparatively a high density.