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Determination of the Substitution Pattern of Cellulose Acetates 1

1991; Taylor & Francis; Volume: 10; Issue: 4 Linguagem: Inglês

10.1080/07328309108543944

1532-2327

Petra Mischnick,

Lignin and Wood Chemistry

ABSTRACT The distribution of acetyl groups in cellulose acetates (DS 2.5) has been determined. After mild methylation with methyl triflate the acetyl groups were exchanged for higher alkyl groups (ethyl, propyl, pentyl) in a subsequent alkaline alkylation step. The mixed alkyl ethers obtained in this way were degraded by reductive cleavage. The monomeric mixtures were acetylated and analyzed by GLC and GLC-MS.