Sodium carboxymethyl cellulose (CMC) plays an important role in the papermaking process. CMC is a widely used cellulose derivative that has many effects on the papermaking process and paper quality.
1. Enhance paper strength
Adding CMC increases the strength and toughness of paper. It improves the bond between fibers, allowing the paper to perform better when stretched and torn.
2. Improve the evenness of paper
Helps disperse fibers evenly, thereby improving paper formation.
3. Improve the retention rate of slurry
Reduce slurry loss and improve the efficiency of the papermaking process.
4. Enhance the water absorption and moisture retention of paper
Enables the paper to better absorb moisture and maintain a certain humidity.
5. Improve the fluidity and filterability of slurry
It is beneficial to the transportation and filtration of slurry and reduces clogging and sedimentation.
6. Used as paper surface treatment agent
Improve paper gloss and printing performance.
7. Improve sizing effect
When used in conjunction with other sizing materials, it can enhance the sizing effect and improve the water resistance of the paper.
8. Reduce production costs
Appropriate use of CMC can reduce the amount of other additives, thereby reducing production costs.
However, there are a few things to note when using CMC:
Control of adding amount: Excessive adding may cause paper performance to decrease.
Compatibility with other additives: Ensure that it cooperates with other additives without causing adverse effects.
Adaptability to papermaking processes: Different papermaking processes may require adjustments to the adding methods and conditions of CMC.
In summary, sodium carboxymethylcellulose plays a variety of important roles in papermaking. Proper use of CMC can improve paper quality and reduce production costs. However, various factors need to be considered comprehensively during application to achieve the best results.
