Abstract:Biodegradable polymers, such as starch, cellulose, and derivatives thereof, are being studied to produce innovative packaging in the most diverse shapes (films, bags, trays, bottles, etc.) to attend this current market trend. The aim of this work was to produce foam trays from cassava starch for food packaging via extrusion followed by thermoforming process. Their formulations were based on unirradiated and γ-irradiated starches at diverse radiation absorbed doses (in kGy) in order to evaluate the influence of… Show more
“…Aerobic biodegradation time slightly increased for the samples containing irradiated starch, owing to small parcels of crosslinked polymer which slowed down their biodegradation. Brant et al, (2018) Corn Gamma 10, 20, 30, and 40 kGy Film Tensile strength, Water vapor permeability, and crystallinity Irradiation doses increased the tensile strength and decreased water vapor permeability. Taking energy consumption into consideration, the authors recommended 30 kGy as the optimal irradiation dose for corn starch.…”
Section: Applications Of Irradiated Starchesmentioning
“…Aerobic biodegradation time slightly increased for the samples containing irradiated starch, owing to small parcels of crosslinked polymer which slowed down their biodegradation. Brant et al, (2018) Corn Gamma 10, 20, 30, and 40 kGy Film Tensile strength, Water vapor permeability, and crystallinity Irradiation doses increased the tensile strength and decreased water vapor permeability. Taking energy consumption into consideration, the authors recommended 30 kGy as the optimal irradiation dose for corn starch.…”
Section: Applications Of Irradiated Starchesmentioning
“…Irradiation with ionizing radiation of the polymeric materials can lead to the formation of highly reactive intermediates, free radicals, ions, and excited states. These intermediates follow many rapid reaction pathways leading to disproportion, hydrogen absorption, adjustments and/or the formation of a new polymer chain bond, thus altering the final structure of the network structure [204]. Electron beam (EB) irradiation is a low-cost technology and environmentally friendly, without any cause or use of polluting agents, catalysts, or generation of undesirable wastes [205].…”
Section: Application Of Green Physical Treatments On Starch and Starch-based Filmsmentioning
A critical overview of current approaches to the development of starch-containing packaging, integrating the principles of green chemistry (GC), green technology (GT) and green nanotechnology (GN) with those of green packaging (GP) to produce materials important for both us and the planet is given. First, as a relationship between GP and GC, the benefits of natural bioactive compounds are analyzed and the state-of-the-art is updated in terms of the starch packaging incorporating green chemicals that normally help us to maintain health, are environmentally friendly and are obtained via GC. Newer approaches are identified, such as the incorporation of vitamins or minerals into films and coatings. Second, the relationship between GP and GT is assessed by analyzing the influence on starch films of green physical treatments such as UV, electron beam or gamma irradiation, and plasma; emerging research areas are proposed, such as the use of cold atmospheric plasma for the production of films. Thirdly, the approaches on how GN can be used successfully to improve the mechanical properties and bioactivity of packaging are summarized; current trends are identified, such as a green synthesis of bionanocomposites containing phytosynthesized metal nanoparticles. Last but not least, bioinspiration ideas for the design of the future green packaging containing starch are presented.
“…Electron beam and gamma radiation were commonly used in industrial applications [37]. Ionizing radiation can lead to changes in the properties of polymers through cross-linking and also to the formation of free radical ions, excited states and many highly reactive intermediates [24,38]. Numerous studies have been conducted on exposure of ionizing radiation to either starch directly after bioplastic production or bioplastic production, followed by exposure to radiation.…”
Section: Solid State Science and Technology VIImentioning
There are increasing intrest in research on corn based bioplastic to replace current plastic. However, corn based bioplastic faces a major drawback which are lack water barrier and poor mechanical properties resulting from its hydophilic properties. To produce better corn based bioplastic properties, a lot of research has been focuses on blend corn based bioplastic with other co biopolymer or additives and also radiation. By using radiation corn based bioplastic will induce degradation, cross linking or grafting and next the properties of corn based bioplastic will be improve in aspect of mechanical, physical and barrier properties and also acceptable to use as packaging material. Irradiated corn based bioplastic also have wide range of technology, the availability, less harmful to environment and the most important is the potential to use as packaging material. There is hot debate about using irradiated corn based bioplastic as packaging material. This review paper will be discussing and also to provide information on influence of radiation on the properties corn based bioplastic and its feasibility as packaging material.
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