Exploring the PolyDADMAC

Exploring the Relationship Between Molecular Weight, Viscosity, Solid Content, and Quality of PolyDADMAC

PolyDADMAC (also known as “polydiallyl dimethyl ammonium chloride”) is a cationic polymer used in water treatment processes. It is valued for its good flocculation and coagulant effects. As a supplier and distributor of water treatment chemicals, it is crucial to understand the relationship between the molecular weight, viscosity and solid content of PolyDADMAC and product quality. In this article, we will explore the correlation between these indicators and how to choose high-quality products that are suitable for you.

The molecular weight, viscosity and solid content of PolyDADMAC are key parameters that affect its effect. They are interrelated. The following is a detailed description of them and the detailed description of their relationship:

1. Relationship

Molecular weight refers to the average length of the PolyDADMAC polymer chain.

Higher molecular weights generally mean longer polymer chains, which can improve the flocculation capabilities of PolyDADMAC. And higher molecular weights generally provide some bridging effects, allowing tiny particles in the water to be linked together. It can improve water treatment effects.

However, too high a molecular weight can also lead to excessive viscosity, which affects operation.

Molecular weight is an important indicator of PDADMAC quality because it directly affects its application effect.

PDADMAC molecular weights typically range from 50,000 to 700,000Da, and products with ultra-high molecular weight should max out at 3,000,000Da.

2. Viscosity

Viscosity refers to the resistance of a PolyDADMAC solution to flow.

Usually the viscosity is 80-12,000mPa.s, and there are also high-viscosity PolyDADMAC with a viscosity greater than 100,000. Viscosity is closely related to molecular weight, and higher molecular weights result in higher viscosity. And viscosity affects the solubility and dispersibility of PDADMAC, as well as its operational performance in applications. If the viscosity is too high, the high viscosity would cause some operating difficulties (transfering and diluting, etc.) Viscosity is an important parameter for measuring the quality of PDADMAC because it reflects its molecular weight and application performance., while low-viscosity PolyDADMAC has good fluidity and is easy to pump.

3. Solid content

Solid content refers to the weight percentage of polymer in the PolyDADMAC solution.

The high solid content means reduced storage cost and freight. However, if a product with ultra high molecular weight is prepared as 40% solution, it can’t even be poured out of the drum.

The solid content of PolyDADMAC is 10% or 50%, that is, the proportion of actual effective substances in the solution

Usually, the solid content of PolyDADMAC we sell is about 40%. We also have other solid content specifications.

You can check the detailed product description of PolyDADMAC for the specific specifications and detailed indicators of PolyDADMAC.

The relationship between them:

Molecular weight and viscosity:

For the same solid content, the higher the molecular weight, the greater the viscosity.

The larger the molecular weight, the higher the viscosity.

Solid content and viscosity:

For the same molecular weight, the higher the solid content, the greater the viscosity.

Molecular weight, solid content, and performance:

At a certain solid content, the higher the molecular weight, the better the effect, but the viscosity will increase.

How to choose the PolyDADMAC that suits you

Reasonable viscosity: ensure fluidity, easy solubility, and good flocculation performance.

If you need to find a new supplier to buy PolyDADMAC, then first you have to determine your water quality composition so that your supplier can help you choose a better model. Or you can tell the supplier the brand and model of PolyDADMAC you used before. Or you can send your existing PolyDADMAC to your new supplier and let them help you analyze and select. Sample testing of the new PolyDADMAC is very important, and you must do the test carefully to determine whether the model is more suitable for you.

As a professional PolyDADMAC supplier, we can provide you with selection services and send you free samples. If you have any needs, please contact us. We will match you with the most professional marketing manager to serve you.