Notwithstanding the numerous studies in the last decades to prevent runaway reactions, the maintenance of stability in chemical reactors is still a current issue in industrial chemical plants. There is an urgent need to implement an efficient and robust algorithm capable of detecting in advance anomalous behaviours of the reactor temperature during exothermic processes, in order to take appropr...

........................................................................................................................ 1 1.0 Introduction .......................................................................................................................... 1 1.1 Storage Stability Problem.......................................................................... 1 1.2 Combustion Problems Ca...

First attempts to explain unusual behavior of Hugoniot in shock-compression experiments on liquid nitrogen [1] have been made many years ago [2-4]. They were based on an idea of polymerization reaction when triple chemical bonds in nitrogen diatomics broke and a spatial set of single chemical bonds appear [3]. According to predictions based on a simple model of sticky hard spheres [4] the molec...

Chemical oxidative polymerization of aniline in dilute aqueous acids using an ammonium peroxydisulfate oxidant proceeds via the intermediacy of large, colorless aggregates that act as ‘seeds’ in orchestrating the overall morphology of the product polyaniline. Observed for the first time by continuously monitoring the polymerization by static and dynamic light-scattering (LS) measurements, these...

Abstract Supramolecular assemblies from synthetic polymers have been widely used in materials science and biological applications. Developing convenient efficient methods to tune polymer structures architectures is important for achieving desired self‐assembly behaviors. Among various strategies, multicomponent reactions drawn significant interest due the high reaction efficiency, chemical sele...

Photopolymerization is an active research field enabling to polymerize in greener conditions than that performed with traditional thermal polymerization. At present, a great deal of effort devoted developing visible light photoinitiating systems. Indeed, the UV systems are currently focus numerous safety concerns so alternatives being actively researched. However, photons less energetic reactiv...

INTRODUCTION A synthetic water-soluble meso-tetra(2,6-dichloro-3-sulfonatophenyl)porphyrinate of iron(III) chloride, Fe-(TDCPPS)Cl, was employed to catalyze the oxidative co-polymerization of penta-halogenated phenols in two humic materials of different origin. MATERIALS AND METHODS Co-polymerization of pentachlorophenol (PCP) was followed by high-performance size-exclusion chromatography (HP...

We report a facile and versatile scanning probe based approach-dip-pen nanodisplacement lithography (DNL)--for manipulating nanostructures of polymer brushes. Nanostructured polymer brushes with sizes as small as 25 nm are made by DNL patterning of the initiator molecules and subsequent surface-initiated polymerization. Nanoconfinement effects including chain collapsing and spreading are observ...