The extraction and quantitative analysis of low molar mass compounds in polymers is an analytical challenge. It is also important from a practical point of view because the low molar mass compounds in time will migrate from the polymers into the surrounding environment. It is especially important to gain knowledge about the migrating compounds in applications such as medical implants, packaging...

Many models for the origin of life have focused on understanding how evolution can drive the refinement of a preexisting enzyme, such as the evolution of efficient replicase activity. Here we present a model for what was, arguably, an even earlier stage of chemical evolution, when polymer sequence diversity was generated and sustained before, and during, the onset of functional selection. The m...

Limiting the generation of polymers waste and maximizing their recyclability recovery have been main focus research industry in recent years. Recycling polyamides leads to loss mechanical thermal properties, therefore, order reuse recycled nylons, an enhancement properties is desired. Enhancing by addition functionalised graphene nanoparticles (GNPs) was goal this study. Recycled PA6/PA6,6 blen...

In order to meet the technical specifications in roofing applications, bitumen used for this purpose is standardly modified by polymers. This, general, allows re-use of recycled polymer during production polymer-modified (PmB), simultaneously reducing amount polymeric waste. Recycling processes, however, may degrade or contaminate polymers, leading reduced crystallinity and lower melting temper...

The significant increase of Waste Electric and Electronic Equipment (WEEE) has led to an important research in upgrading recycled engineering plastics by means of a blending technique. Classical twin-screw extrusion is compared to a new blending technique, where two polymers are combined together and then flow in several static mixers. This technique allows to obtain different morphologies of c...

Coordination polymers and metal-organic frameworks are appealing as synthetic hosts for mediating chemical reactions. Here we report the preparation of a mesoscopic metal-organic structure based on single-layer assembly of aluminium chains and organic alkylaryl spacers. The material markedly accelerates condensation reactions in water in the absence of acid or base catalyst, as well as organoca...

since reusing waste tire as a cheap filler is considerably high, in this study, recycled rubber to replace nr/br is used up to 15 phr and the positive and negative aspects of the rubber powder and reclaimed rubber in the physical, dynamical and processing properties are evaluated. the results showed that in the presence of recycled rubber, the cure rate, crack growth resistance, tear strength a...

Sweden’s concrete waste is recycled for use in low-utility purposes such as in the construction of sub-bases in roads but hardly as aggregates in new concrete. To analyse the potential for high-utility recycling, a literature study was conducted on the regulatory instruments, building standards, production and properties of recycled concrete aggregates and the recycled aggregate concrete for Sw...

Polymers and plastics are crucial materials in many sectors of our economy, due to their numerous advantages. They also have some disadvantages, among the most important problems with recycling disposal used plastics. The recovery waste is increasing every year, but over 27% landfilled. rest recycled, where, unfortunately, incineration still common management method. From an economic perspectiv...