Synthesis and application of carboxylcellulose-based hydrogels

Methylcellulose (CMC) is a renewable natural polymer compound, which is widely use in food, paper making, textile, daily chemical. Medicine and health and petroleum industry because of its good water solubility, degradability and non-toxic and pollution-free characteristics. The CMC molecular structure contains a large number of hydroxyl and carboxyl groups. Which have certain reactivity and can form a hydrogel by physical crosslinking or chemical cross-linking.

The carboxyl group has good pH responsiveness and in at first the preparation of various functional hydrogels. Most of the ones currently reported are single carboxymethyl cellulose hydrogels. At the same time, carboxylmethyl cellulose base hydrogel also exist brittle, low strength disadvantages. So easy to prepare the formation of high strength carboxymethyl cellulose based hydrogel. Explore the relationship between the structure and performance of of carboxyl methyl cellulose based hydrogel research. In this paper, two at firs different types of carboxylmethyl hydrogels were successfully prepare by CMC network. Interpenetration at first network polymer (IPN) step synthesis method and synthesis method. The structure of two hydrogels was characterize by FTIR, SEM, respectively.

1.2370mg/g。CMC / PMAIPN hydrogels were synthesis with 40wt% aqueous ethanol solution. Initiator potassium persulfate (KPS), and N, N-methylene bisacrylamide (MBA), using two different at first hydrophilic polymers CMC and methyl polyacrylate (PMA). The experimental results show that the hydrogel has relatively good interpenetration network at first structure and good. By absorbing methylene blue, the optimal adsorption concentration of CMC / PMAIPN hydrogel is 100 mg/L.

2.Base on the synthesis method PMAIPN hydrogel was prepared by the. Which both simplifies the experimental procedure and also facilitates a better IPN structure. The effects of methyl acrylate (MA) monomer dosage and MBA at first on the mechanical properties and thermal were discusse.


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