VASILICA POPESCU*, ECATERINA VASLUIANU, NORINA-CONSUELA FORNA, ION SANDU, ELENA BERCU<br>Comparative Study of the FTIR Analysis and the Performances <br>of N,N,N-trimethyl Chitosan as Wrinkle-proofing Agent

VASILICA POPESCU*, ECATERINA VASLUIANU, NORINA-CONSUELA FORNA, ION SANDU, ELENA BERCU
Comparative Study of the FTIR Analysis and the Performances
of N,N,N-trimethyl Chitosan as Wrinkle-proofing Agent

Abstract:

By functionalizing the N,N,N-trimethyl chitosan with poly-functional compounds of the types polyols (ascorbic acid) and polycarboxylic acids (caffeic acid, diclofenac, oxalic acid and butane tetracarboxylic acid), ionic compounds have been produced having the OH or COOH groups as terminal groups. These groups interact with the OH groups from the cellulose macromolecular chains, producing the cure reaction. In this way, covalent bridges of the ether or ester type are formed between cellulose and the functionalized products, bridges resulting in cellulose cross-linking. Yet, network generated in these cases is of ionic-cross linking type, the name “ionic” deriving from the ionic character of the studied wrinkle-proofing agents. The application of the ionic wrinkle-proofing agents was made according to the pad-dry-cure technology. The spectroscopic (FTIR and XPS) analyses were performed in order to prove the realization of the cellulose cross-linking, its ionic nature and the type of the chemical bond between cellulose and wrinkle-proofing agent. The FTIR and XPS spectra proved the ionic character and the time stability of the functionalized alkylated agents. The performances of the wrinkle-proofing agents based on N,N,N-trimethyl chitosan (wrinkle-recovering angle, yellowness after treatment, and degree of processing and effects durability after repeated washings) have been comparatively presented, to determine the optimum wrinkle-proofing agent. It has been found that the ionic compound formed between butane tetracarboxylic acid (BTCA) and N,N,N-trimethyl chitosan results in the best wrinkle-proofing effects. Keywords: N,N,N-trimethyl chitosan, FTIR, XPS, BTCA, ionic cross-linking, functionalizing

Issue: 2013, Volume 64, Issue 11

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