A platform for more sustainable chitin films from an ionic liquid process

Abstract

Biocompatible porous and non-porous chitin films were prepared using ionic liquids and their potential for drug delivery demonstrated using caffeine as a model drug.

Preparation and characterization of chitosan membranes

“…[1][2][3] Due to its low cost, easy lm-forming capacity, environmental friendliness, alkali stability, biodegradability, excellent mechanical properties and thermal stability, it is very valuable in the preparation of membranes, and has attracted great research interest. [4][5][6][7] Many studies have reported that chitosan has an excellent ability to form microspheres, membranes and bers, which gives it a signicant advantage over other absorbable membrane materials in the design of packaging structures. 8 However, chitosan is generally prepared using acetic acid as solventa method that brings a number of disadvantages, such as minimal thickness, peculiar smell and fragile nature of the lms at low concentration of chitosan, as well as easy drying and curl.…”

Facile Preparation of Starch-Based Electroconductive Films with Ionic Liquid

“…Thus, we have recently shown that reproducible, strong, and versatile cellulose [4][5] or chitin films, 6 made from either 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 4 biopolymer alone or combined with other polymer(s), can be prepared through the dissolution of biopolymer in 1-ethyl-3-methylimidazolium ([C 2 mim][OAc]) ionic liquid (IL) followed by the casting of films and washing out the solvent. Films prepared using this methodology can be prepared with the controlled composition, thickness, surface properties, flexibility, and transparency.…”

Chitin for the Replacement of Fluoropolymers in the Assembly of Electrochemical Devices

“…Once the graphene was well dispersed in 1.25 wt% chitin solutions (monitored visually), the films were cast from the solutions according to the reference with a minor modification in the casting method. 13 Briefly, solutions of graphene dispersed into chitin/IL solution were placed into an oven at 90 o C until warm and free-flowing. Films were cast on a glass plate using a double blade micrometer film applicator (MTI Corporation, Richmond, CA, USA) at a casting height of 75 μm.…”

“…12 Using the IL technology, we developed an IL-solution processing platform for the preparation of chitin films, where the film size and thickness can be controlled, and additives can be incorporated. 13 Here, we hypothesized that by using the IL processing technique, the function of fluoropolymers in electrochemical devices could be replaced with a more sustainable biopolymer, chitin. In addition to its superior biorenewability, chitin also possesses thermal and mechanical stability, hydrophilicity, and film-forming properties, 14 all of which make it a suitable for exploration for use as a polymeric binder and separator in an electrochemical device.…”