In recent years, people begin to pay more and more attention to environment and sustainable development. As a rich plant resource, natural cellulose has attracted wide attention in many fields due to its unique characteristics such as small proportion, low cost, recyclable and biodegradable. As one of the natural cellulose derivatives, Sodium Carboxymethyl Cellulose (CMC) is soluble in water, so it can be used as the raw material of water-soluble paper.
To better apply to the production and improvement of water-soluble paper, it is very important to study the dissolution behavior of CMC in the dissolution process of water-soluble paper and the influence of CMC properties on the solubility of water-soluble paper. Research has been done to simulate the water absorption process of water-soluble paper tablet, which uses fibrous CMC as one of the raw materials to prepare. The result shows that the wetting and water absorption capacity of water-soluble paper tablet increase with the increase value of CMC degree of substitution (D.S.). The water absorption process of water-soluble paper tablet conforms to physical absorption, and its water absorption rate and total water absorption amount are proportional to the D.S. value. To be specific, when the D.S. value increases from 0.50 to 0.80, the dissolution time of water-soluble paper tablet decreases from 37 seconds to 17 seconds, indicating that the dissolution rate of water-soluble paper increases with the increase of D.S. value. This is because the increase of D.S. value increases the molecular polarity of CMC, which is conducive to the water absorption and swelling capacity of CMC fiber, therefore improving the solubility of water-soluble paper.
If you would like to get more information about Sodium Carboxymethyl Cellulose used in water-soluble paper, please feel free to contact us.