Cellulose cross-linking

Mechanisms for Formation and Hydrolysis of Finishes. The general mechanism for acid-cataly2ed formation and hydrolysis of /V-methy1o1 cellulose cross-links has been shown to pass through a catbonium ion intermediate as in equations 4 and 5 (41) ... 

Metal oxides such as alumina Polyallyls Polybutadiene Polyamino acids Urethanes Acrylic polymers Cellulose Cross-linked dextrans Agarose... 

Entrapment in alginate gel Adsorption on modified cellulose Cross-link with glutaraldehyde Adsorption on bone char... 

For decades, rayon has been crosslinked with formaldehyde to improve the poor crimp resistance in the dry state and the dimensional stability in the wet state. Under the pressure of synthetic fiber competition, an effort has been made to produce non-iron cotton fabric. In this high-grade finishing, a distinction is made between treatment with aldehydes, aminoplast precondensates, reactant resins, as they are called, and with nitrogen-free cellulose cross-linking agents. 

Active immobilized enzymes were obtained when a cellulose isothiocyanate reacted with glucoamlyase and when cellulose cross-linked with formaldehyde and treated with 2-chlorotriethylamine reacted with D-glucose isomerase. Alcohol dehydrogenase and lactate dehydrogenase have been immobilized, without loss of the enzymic activities, on s-triazinylated DEAE-cellulose. 

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