Physical properties and antibacterial activity of quaternized chitosan/carboxymethyl cellulose blend films

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

“…It is evident that the tensile strength is an important indicator of the cross-sectional tension of the composite film [28]. All the three test factors affected the tensile strength of the composite film.…”

“…However, CS is also strongly affected by water; therefore, without a cross-linking treatment, the problem of high water absorption rate and moisture permeability coefficient of the composite film remains unsolved. Hu et al's study [28] showed that the mixing of CMC and CS led to a significant drop in WVP. This is the formation of hydrogen bonds between CS and CMC, which reduces the characteristics of the hydrophilic polysaccharide matrix.…”

“…Because food packaging materials are required to have high strength, the tensile strength was selected as the standard for the completely randomized design test [28]. The test results are shown in Table 1.…”

“…The effect of concentration changes on the performance of the composite membrane has been well demonstrated. This concentration range is representative [28]. …”

“…Atefa et al [33] demonstrated that excessive super-hard stiffness and cracks in the film matrix are the main reasons leading to brittleness and reduced tensile strength of the film. However, Hu et al [28] believe that some of the weak polymers replace the stronger polymers, thereby weakening the internal network structure of the film, and thus causing a decrease in the tensile strength. In addition, the cross-linking agent, CaCl 2 , can increase the tensile strength of the composite film within a certain range.…”