Influence of chitosan and epoxy cross-linking on physical properties of binary blends |
| |
| Authors: | Saira Jabeen Shaukat Saeed Bakhtiar Muhammad Sagheer Gul Muhammad Farooq |
| |
| Institution: | 1. Department of Chemistry, Hazara University, Mansehra, Pakistan;2. Nanosciences and Catalysis Division, National Center for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan;3. Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan;4. Department of Chemistry, Government Postgraduate College Mansehra, Mansehra, Pakistan |
| |
| Abstract: | In this study, blends of chitosan (Cs) and bisphenol-F-diglycidyl ether (3.80 × 10?3 to 3.80 × 10?2 mol) were cast by the solution route. FT-IR results suggested that chitosan was cross-linked at terminal amino groups through diepoxide linkage. The chitosan films became less flexible and stiffer upon reaction with epoxy. Blending improved percentage elongation (31%) and toughness (10 MPa), whereas Young’s modulus (145 MPa) and tensile strength (45 MPa) were decreased. Extent of weight loss in Cs/BPFDGE was lower (15%) than that of original precursors (chitosan 33%). Moreover, blending of chitosan with BPFDGE increased water absorption properties due to generation of hydrophilic ?OH groups. |
| |
| Keywords: | Bisphenol-F-diglycidyl ether blends chitosan solution casting water absorption |
|
|
