Application and Precautions of Polyacrylamide in the Papermaking Industry

Table of Contents

Introduction of Polyacrylamide Products

Polyacrylamide can be divided into three main categories: anionic, cationic, and non-ionic. Among them, cationic polyacrylamide (CPAM) is the most widely used in the papermaking industry. CPAM has excellent solubility, low dosage efficiency, and environmental friendliness, making it an ideal papermaking chemical additive. Depending on the molecular weight and ionization degree, CPAM can be further subdivided into multiple models. Different models of CPAM have different functions in the paper production process, so it is necessary to choose according to actual production needs.

Application of Polyacrylamide in the Papermaking Industry

  1. Improving paper tensile strength and dry strength: Polyacrylamide can increase the friction between fibers, thus enhancing paper tensile strength. Adding an appropriate amount of CPAM to the pulp can effectively improve the dry strength of the paper. Furthermore, CPAM can also improve the paper’s resistance to moisture.
  2. Improving filtration performance and foam resistance: CPAM can enhance the filtration performance of the pulp, reducing moisture content and energy consumption. At the same time, CPAM has foam resistance properties, reducing the formation of bubbles in the pulp and increasing production efficiency.
  3. Improving paper surface properties: Polyacrylamide can enhance the smoothness and brightness of the paper surface, making it more suitable for printing. By adjusting the molecular weight and ionization degree of CPAM, the surface properties of the paper can be optimized to meet various usage requirements.
  4. Reducing paper viscosity and dewatering time: Using polyacrylamide can reduce paper viscosity, shortening dewatering time and improving production efficiency. During the dewatering process, CPAM can also reduce the surface bubbles of the slurry, slow down the bubble bursting speed, and enhance the dewatering effect.

Precautions for Using Polyacrylamide

  1. Choosing the appropriate model: Selecting the appropriate CPAM model is crucial. Different paper types and production processes have different polyacrylamide requirements, so it is necessary to choose based on actual production conditions. Small-scale experiments can be conducted first to observe the effects of different CPAM models on paper performance, determining the best solution.
  2. Properly controlling dosage: The amount of polyacrylamide used should be controlled within an appropriate range. Excessive use may lead to reduced paper strength and increased costs, while insufficient use may not achieve the desired effect. Dosage control should be adjusted according to actual production conditions.
  3. Paying attention to usage methods and procedures: Properly using polyacrylamide is essential. First, CPAM should be dissolved in water to form a diluted solution. Then, the diluted solution should be evenly added to the pulp. During the addition process, the pulp should be stirred to ensure the even distribution of CPAM in the pulp. Avoid directly adding CPAM to hot, acidic, or alkaline pulp, as this may affect its performance.


Polyacrylamide is one of the earliest and most widely used papermaking additives in the paper industry. Its application in the papermaking process has become a standard practice, and polyacrylamide is now considered a standard papermaking additive. Choosing the appropriate type of CPAM, controlling the dosage, and using it correctly are key to achieving optimal results. Additionally, when using polyacrylamide, it is important to avoid adding it directly to high-temperature, acidic, or alkaline pulp to ensure its performance is maximized.

In conclusion, polyacrylamide, as a papermaking chemical additive, has played a significant role in the paper production process. By understanding its product characteristics, usage methods, and precautions, manufacturers can fully utilize polyacrylamide to enhance paper performance and provide higher quality products to consumers. In the future, as polyacrylamide technology continues to develop, its application in the papermaking industry is expected to become more widespread, bringing more innovations and breakthroughs to the entire sector.

Contact Us

Talk to experts and get special offers

You will get a satisfactory answer

Shopping Cart