An insight into the properties of Aegle marmelos pectin-chitosan cross-linked films

► DSC revealed maximum interaction of AP and CH when present in equal ratio. ► Almost negligible zeta potential of these films supported maximum interaction. ► The work of adhesion and spreading coefficient of these films were lowest. ► Lowest contact angle and swelling index suggested stability in different pH. ► Exposure to acidic and alkaline pH did not alter surface morphology.