This paper presents an investigation on microencapsulation of paraffin as a phase change materials (PCMs) for application in buildings. Encapsulated PCM particles were prepared by suspension-like polymerization technique. The effect of surfactant concentration and mass ratio of PCM to monomer on the final characteristics and performance of the microcapsules were investigated. The distribution o...

In this study the effect of liquisolid technique on the dissolution profile of spironolactone was evaluated. Different formulations of spironolactone liquisolid compacts were prepared using various amounts of non-volatile vehicles (Poly ethylene glycol 400 and glycerin). The ratio of microcrystalline cellulose (as carrier) to silica (as coating powder material) was 20 for all formulations. Afte...

This booklet provides an introduction to the concepts of Differential Scanning Calorimetry (DSC). It is written for the materials scientist unfamiliar with DSC. The differential scanning calorimeter (DSC) is a fundamental tool in thermal analysis. It can be used in many industries – from pharmaceuticals and polymers, to nanomaterials and food products. The information these instruments generate...

In this study, we evaluated reactivity of organic peroxides with metals. The effect of useful metals for decomposition of organic peroxides was measured by Differential Scanning Calorimeter (DSC). Results of DSC measurement with several kinds of sample cells showed that some of organic peroxides have high reactivity with gold plated cell. Hydroperoxides were decomposed lower temperature by usin...

the main objective of the present work was to synthesis polyamide 6 through anionic polymerization of ε-caprolactam in an internal mixer. the reaction time and the rheological properties of samples during the polymerization were studied. the samples were characterized by thermo gravimetry analysis (tga), differential scanning calorimeter (dsc) and ft-ir spectrometer. the melt flow behavior and ...

Cardanol, a waste from the food industry and widely produced (1 Mt/y), has been used as chain stopper during polycondensation of short oil alkyd resins in order to replace benzoic acid. Then, phosphorylated cardanol added both reduce solvent content bring flame-retardant (FR) properties resins. The renewable carbon formulations increased up 23%. impact introduction molecules on drying time flex...

epoxy – polysulfide copolymers without or with low amounts of epoxy in their structure have poor mechanical properties in oxidative curing system.to strengthen the mechanical properties of polysulfide elastomer inclusion of epoxy resin (epon828) as hard segment was studied. ft-ir spectroscopy and rheometry were used to verify the formation of epoxy-polysulfide copolymer.  results obtained from ...

Acetylcholinesterase (AChE) enzyme which catalyses the hydrolysis of choline esters, such as acetylcholine, is very important in nerve function. Previous structural studies showed the possible amyloid fibril formation on the AChE. Therefore it is important to understand interaction of ligands to prevent the formation of  amyloid fibrils. The purpose of the present study was to  char...