Lack of degradability and the closing of landfill sites as well as growing water and land pollution problems have led to concern about plastics. With the excessive use of plastics and increasing pressure being placed on capacities available for plastic waste disposal, the need for biodegradable plastics and biodegradation of plastic wastes has assumed increasing importance in the last few years...

Polymers currently represent materials that are cost-effective, while its recycled nature is significant in terms of environmental protection. However, the surface properties polymers often do not meet demands wettability, adhesion, and friction, among others. Atmospheric plasma treatment on improves physical-chemistry properties. In this work, a nylon coating was prepared by spin technique cha...

One route of exposure to SPAs is through bottled water since the polymers used make plastic bottles contain these SPAs, which migrate from water. Solid-phase extraction (SPE), HPLC-MS, FTIR, and DSC are identify quantify in Interday measurements cyanox 1790 with HPLC showed RSD, error, R2 lower than 3.78, 9.3, 0.99995, respectively. For intraday water, were less 4.1, 11.2, Concentrations Cyanox...

Increasing plastic recycling rates is key to addressing pollution. New technologies such as chemometric analysis of spectral data have shown great promises in improving the sorting efficiency boost rates. In this work, a novel deep learning architecture, PolymerSpectraDecisionNet (PSDN) was developed, consisting convolutional neural networks, residual networks and inception decision tree struct...

The properties of products made from recycled plastics are in part determined by the level and types of impurities found in the primary plastic. The removal of other plastics is essential if the properties are to approach those of virgin resin. Purification of plastic resins is achieved by exploiting differences in material properties of the different plastic types. Differences in density and s...

Recycled concrete aggregates and mixed recycled aggregates are specified as types of aggregates with lower densities, higher water absorption capacities, and lower mechanical strength than natural aggregates. In this paper, the mechanical behaviour and microstructural properties of natural aggregates, recycled concrete aggregates and mixed recycled aggregates were compared. Different specimens ...

Organic carbonates are considered the chemicals of future. In particular, propylene carbonate is widely used as a non-reactive solvent, plasticizer, fuel additive, and reagent, especially in production environmentally friendly polymers that not harmful to human health. This paper reviews recent literature findings regarding development synthetic methods starting from propane-1,2-diol urea. The ...

We study how a manufacturer’s recycled content claim decision is impacted by demand for recycled content through environmentally preferable purchasing (EPP) programs and supply uncertainty. We model a manufacturer making a recycled content commitment that can commit to a minimum recycled content that holds for every period (product specific claim), or an average recycled content across periods ...