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Effective esterification of carboxymethyl cellulose in a new non-aqueous swelling system (1996)

Vogt, S. ; Klemm, D. ; Heinze, T.

Springer

Polymer bulletin 36 (1996), S. 549-555

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ISSN: 1436-2449

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Summary Carboxymethyl cellulose (CMC) was treated in a dipolar-aprotic solvent like N,N-dimethylacetamide, or dimethylsulfoxide (DMSO) with p-toluenesulfonic acid yielding a high reactive gel-suspension of the polymer. This mixture allows a direct esterification of free hydroxyl groups of CMC as exemplified by acylation with carbonic acid chlorides, or anhydrides, and with isocyanates as well as by sulphation, phosphating and silylation. The products characterized by elemental analysis and FTIR spectroscopy possess a high degree of functionalization.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00342445

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