Search results for " Bioplastic"
showing 3 items of 3 documents
Bioplastics: A new analytical challenge
2022
Even though petroleum-based plastics are advantageous in complying with the performance requirements in many applications, these are related, throughout their life cycle, to several environmental problems, including greenhouse gas emissions and persistence in marine and terrestrial environments. Therefore, the preservation of natural resources and climate change is considered worldwide, the main reason for which is necessary to reduce consumption and dependence on fossil-based materials. Biopolymers (PLA, PHAs, etc.) are examples of plastics whose use is grown exponentially over the years because of the improvements of their physical and mechanical properties using additives of various natu…
Coffee grounds as filler for pectin: Green composites with competitive performances dependent on the UV irradiation.
2017
Novel composite bioplastics were successfully prepared by filling pectin matrix with treated coffee grounds. The amount of coffee dispersed into the pectin was changed within a wide filler range. The morphology of the pectin/coffee hybrid films was studied by microscopic techniques in order to investigate their mesoscopic structure as well as the sizes distribution of the particles dispersed into the matrix. The micrographs showed that the coffee grounds are uniformly dispersed within the polymeric matrix. The morphological characteristics of the biocomposite films were correlated to their properties, such as wettability, water uptake, thermal behavior and mechanical performances. Dynamic m…
RADIATION-CLEAVABLE MICROPARTICLE CHAPERONES FOR DURABILITY-CONTROLLED NANOCOMPOSITE BIOPLASTICS
2012
Polysaccharide micro/nanoparticles, incorporating stabilizers (natural antioxidants), prodegrading agents (such as enzymes or metal oxide nanoparticles) or other active ingredients, can be considered ideal chaperones to introduce various and heterogeneous substances into polysaccharide films in virtue of their structural affinity. The possibility of obtaining biodegradable and colloidally stable nanoparticles from xyloglucan has been here investigated. Xyloglucans are a major class of structural polysaccharides found in the primary cell walls of higher plants. They are particularly interesting raw materials for their excellent film forming properties, thermal stability and hydroxyl rich, hi…