Orange peel‐derived pectin jelly and corn starch‐based biocomposite film with layered silicates

Abstract

Orange peel‐derived pectin jelly/corn starch‐based biocomposite films with and without layered silicates (LSs) were prepared using melt extrusion followed by film die casting. To enhance interfacial compatibility, corn starch and LSs were chemically modified. Regardless of chemical modification or LS weight content, different pectin jelly‐to‐starch weight ratios (63/37, 60/40, 57/43, and 54/46) were considered to formulate the ingredients of biocomposite films in light of Taguchi‐based predictions. X‐ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), scanned electron microscopy (SEM) and transmission electron microscopy (TEM) were systematically used to characterize corn starch, LSs, and biocomposite films. Among all the films considered, pectin jelly/modified (15%) starch‐based biocomposite film (54/46 w/w) containing 0.25 wt % of pristine LSs was found to be the most promising in terms of texture structure and mechanical integrity. Furthermore, creep recovery, hydrophobicity, and water vapor and oxygen gas transmission rates of the most promising biocomposite film were experimentally determined. Based on the findings obtained, the overall performance of the biocomposite film was evaluated and weighed against the overall performance of a low‐density polyethylene film. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40654.

Antioxidant films based on gelatin capsules and minimally processed beet root (Beta vulgaris L. var. Conditiva) residues

“…Sedlařík et al . have developed biocomposites based on dairy industry waste and a synthetic biodegradable polymer, and Çokaygil et al . incorporated pectin jelly extracted from orange peels into starch films.…”

Natural Polymeric Materials: A Solution to Plastic Pollution from the Agro-Food Sector

“…However, both formulations, biopolymerics and biocomposites, are lastly processed to obtain biofilms or three-dimensional objects by applying conventional mechanical techniques: extrusion, molding, casting, or a combination of them [ 88 , 99 , 100 ]. All these processing methods selected for the manufacture of food waste-based bioplastics play an important role in their final properties [ 101 ].…”

“…More often, biopolymers extracted from fruits and vegetable wastes are blended with other polymers whose mechanical and physical properties are not suitable to accomplish commercially acceptable products [ 100 ], thus realizing composite materials known as biocomposites.…”

“…It is been used by Deng et al [ 126 ] for layered silicates synthesis. Layered silicates (LSs) have hydrophilic characteristics owing to the presence of inorganic cations (Na + and Ca 2+ ) in the interlayer spacing; hence, they are miscible with different hydrophilic polymers, including starch and pectin, able to compensate their rheological property differences [ 100 ].…”

“…Despite not being recovered from vegetables wastes, Cokaygil et al [ 100 ] used LSs as natural filler to prepare biocomposite films having corn starch and pectin extracted from orange peels as a polymeric matrix. Different pectin jelly-to-starch weight ratios (63/37, 60/40, 57/43, and 54/46 w/w ) were considered when formulating the film ingredients.…”