ACETYLATION OF MICROFIBRILLATED CELLULOSE BY REACTION WITH ACETIC ANHYDRIDE CATALYZED BY N-BROMOSUCCINIMIDE
Keywords:microfibrillated cellulose (MFC), microfibrillated cellulose acetate, N-bromosuccinimide (NBS), acetylation
Cellulose acetate (DS=2.3) was prepared by reacting microfibrillated cellulose (MFC) with acetic anhydride using N-bromosuccinimide as a catalyst. The reaction was conducted using dimethyl sulfoxide as the solvent, at 600C for 120 minutes. Chemical structure of product was determined by IR, 1H-NMR and 13C-NMR.The phase structure and the degree of crystallinity of the sample was deduced from the powder X-ray diffraction (PXRD). The thermal stability was investigated by thermal gravimetric analysis (TGA). The results showed that MFC acetate had characteristic of cellulose type I structure with the degree of crystallinity of 50.45% and the decomposition of the sample took place in the temperature range of 240-420oC.
Authors who publish with Vietnam Journal of Science and Technology agree with the following terms:
- The manuscript is not under consideration for publication elsewhere. When a manuscript is accepted for publication, the author agrees to automatic transfer of the copyright to the editorial office.
- The manuscript should not be published elsewhere in any language without the consent of the copyright holders. Authors have the right to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal’s published version of their work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are encouraged to post their work online (e.g., in institutional repositories or on their websites) prior to or during the submission process, as it can lead to productive exchanges or/and greater number of citation to the to-be-published work (See The Effect of Open Access).