Biobased polymer films from avocado oil extraction residue: Production and characterization

Abstract

In view of the increasing interest in the use of residues from the food industry as source for packing applications, the by‐product of the mechanical extraction of avocado oil is an attractive product as it consists basically a hydrated and defatted pulp, rich in proteins, fibers. and oil. This work aims to produce biobased polymer films from avocado oil extraction residue. Seven film‐forming solutions were elaborated from puree and the additives tested were glycerol, cassava starch, and microcrystalline cellulose. The films obtained from the pure residue presented brittle behavior. All films presented low values of water vapor permeability (0.064 to 0.446 g mm m−2·kPa−1 h−1) and medium water soluble fraction (43.79 to 56.92%). The films with cassava starch and glycerol presented the best results, with mechanical (tensile: 2.70 MPa; elongation: 13.7%) and thermal properties in the range typically found in the literature for biobased films. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43957.

Production and characterization of starch‐based films reinforced by ramie nanofibers (Boehmeria nivea)

“…An early stage of decomposition occurred in the temperature range of 100–150 °C. In the literature, it is associated with the loss of free and bound water present in the films . The nanocomposites components were degraded between 250.3 and 400.0 °C (Table ) in a single stage, which indicates a good interaction between cassava starch, glycerol, and the ramie cellulose nanofibers.…”

“…Light transmittance was measured, in triplicate, at 600 nm according to Santos et al . The films were cut in rectangular samples (1 cm × 4 cm), placed in quartz test cells, and then analyzed in an UV spectrophotometer (Nova Instruments, UV‐1600, Brazil).…”

Development of active cassava starch films reinforced with waste from industrial wine production and enriched with pink pepper extract

“…Ilyas et al 10 developed biodegradable starch films from sugar palm fibers and reported similar results for the increase of TS and ELO upon increasing the fiber content in the films. Yan et al 65 also identified the same behavior for TS and ELO upon increasing the concentration of rosemary extract in films made from sodium alginate‐starch.Upon observing TS and ELO, the B2 (11.01 MPa, 43.80%), F4 (8.34 MPa, 48.88%) and F3 (8.11 MPa, 43,50%) films may be compared to the TS and ELO of low‐density polyethylene (LDPE), which exhibits a TS ranging from 4.6 to 17.3 MPa 73,74 and ELO ranging from 68.7 to 500% 75 …”

Cassava bagasse as a reinforcement agent in the polymeric blend of biodegradable films

“…Biodegradable films are packaging materials produced from renewable and biodegradable sources. They are a promising alternative to replace, at least in part, conventional synthetic polymers of plastic packaging . The functionality and performance of biodegradable films depend on their mechanical and water vapor permeability (WVP) properties, which in turn depend on the film composition, forming process, and method of application in the product …”