1. Bendable films based on Chitosan
Rubina Ajdary

2. different physico-mechanical properties
Chitin and chitosan
Shrimp/crab
Chitin
Deacetylation
Chitosan
<50%
[1]
DD% MW
60-100%
different physico-mechanical properties
[2]
1- Rinaudo, M.,Prog. Poly Sci (2010), 31, 609
2- Younes, I., Marine Drugs (2015), 13(3), 1134

3. Application of chitosan
[3]
[4]
[5] 3- 4-
5- Luo Y, et al.Food hydrocoll (2013) 31:335

4. Application of chitosan
Removal of metal ions
Flocculant to clarify water
Reduce odors
Water
&
waste treatment
Eliminate synthetic polymers
Treat acne
Maintain skin moisture
Improve suppleness of hair
Cosmetics
&
toiletries
Tone skin
Toothpaste & chewing gum
bacteriostatic
Preservative
Bind lipids
Protective & fungistatic
Food
&
beverages
Dietary fiber
Thikener & stabilizer
Antibacterial coating for fruits
[1]

5. Sensitive Humidity-Driven Reversible and Bidirectional Bending of chitosan films

6. Water swelling/deswelling-dependent bending in film
Bending due to the formation of a bilayer like structure consisting of asymmetric humidity-swollen and nonswollen layers
Nanocellulose
[6]
6- Wang, M., Advanced Materials Interfaces 2015, 2,

7. Bendable film Preparation from Chitosan solution
1 g chitosan 100 ml 1M HCl Stirred overnight Suspension 200 ml water Stirred for 6h Suspension Dyalysis for 2 days PH= ~ 5,7 Filtration Solid concentration measurement Transparent solution Solvent evaporating
80 ml
40 ml
20 ml
~10 µm ~20 µm ~40 µm
Chitosan film

8. We aim to study the relation between…
Thickness and bending curvature of the film
Thickness and water adsorption in chitosan film

9. characterization Morphology of cross-section of the film by SEM
Mechanical properties under humidity control
DSC
Young-modulus
Humidity
time

10. Thanks for your attention Your questions are welcome 