Abstract
Bacterial cellulose can be modified by esterification using palmitic acid and Mucor miehei lipase as catalyst. The purpose of this research was to determine the optimum conditions of esterification reaction of cellulose and palmitic acid . The esterification reaction was carried out at the time variation of 6, 12, 18, 24 and 30 hours and the mass ratio of cellulose: palmitic acid (1: 11: 2, 1: 3, 1: 4, 1: 5,1:6) at 50 °C. The cellulose palmitate was examined its physical and chemical properties by using FTIR spectrophotometer, XRD, bubble point test and saponification apparatus. The results showed that the optimum reaction time of esterification reaction of cellulose and palmitic acid occurred within 24 hours and the mass ratio of cellulose: palmitic acid was 1: 3 resulting in DS of 0.376 with swelling index of 187 %, crystallinity index of 61.95%, and Φ porous of 2.40 μm. Identification of functional groups using FTIR spectrophotometer showed that C=O ester group was observed at 1737.74 cm -1 and strengthened by the appearance of C-O ester peak at 1280 cm -1 . The conclusion of this study is reaction time and reactant ratio influence significantly the DS of cellulose ester.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
