per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332019-064100articleMohsen Azargoonmhsnazargoon@gmail.com1Abbas Kebritchia.kebritchi@ippi.ac.ir2Moosa Nazarimosanazari@gmail.com3The pot life of high-energy composites plays a decisive role in the ease of production process and the quality of the finished product's properties. Two effective parameters are the determination of the operating life of the curing agent concentration (NCO / OH ratio) and the amount of catalyst for curing. In this paper, the effect of different amounts of catalysts and different amounts of R (NCO / OH ratio) on the pot life of HTPB-based high energy composite has been studied from scientific sources. Investigations carried out in this study showed that increasing the amount of catalysts in the curing process increases the viscosity of the high energy composite. Also, increasing the amount of R from 0.8 to 1 speed increases the viscosity and increases the pot life of the application. It is interesting to note that with increasing R, from 1 to 1.1, the viscosity increase rate is higher than R=1 contrary to expectation and pot life increases. Energetic composite based on the IPDI curing agent has two distinct stages of increasing viscosity and two different speeds. This is attributed to the presence of two different reactive groups of isocyanates in the molecular structure of this curing agent. In this study, the effect of DBTDL, FeAA, TEB and TECH catalysts on the pot life of high energy composite based on HTPB has been compared and compared. Also, through the Kissinger and Ozawa equations, the amount of activation energy can be evaluated and compared in systems with a variety of catalysts. Based on this, DBTDL has the least amount of activation energy among the catalysts to be cured, resulting in a higher uptake of polyurethane curing times and a lower pot life. Also, according to the studies, to obtain suitable curing for polyurethane systems and proper pot life, the value of R is equal to 1.http://irdpt.ir/Article/27595pot Life Catalyst R value Viscosity compositeper ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332019-064100articleبیتا یاراحمدیb.yarahmadi71@yahoo.com1 seyed mohammad reza milani hoseinidrmilani@iust.ac.ir2The term macromolecule refers to a group of molecules with a high molecular weight, composed of smaller units. Macromolecules contain proteins, amino acids, carbohydrates, etc., and play a very important role in the livelihoods, so the identification and detection of macromolecules is of particular importance. Different methods such as fluorescence, NMR, electron microscopy, electrophoresis and HPLC are used to identify and detect macromolecules. A quick and accurate method for detecting macromolecules ismolecular imprinting. Molecular imprinting is one of the most important methods for the detection and quantification of a variety of small molecules, macromolecules and microorganisms (bacteria and viruses). Different imprinting methods are used to detection macromolecules and microorganisms, including surface imprinting, microcontact impeinting and epitope imprinting.Molecular molding compared with other detection methods has features such as low cost, high detection capability, stability, low detection limit and stability. Due to these properties imprinted polymers are used in various fields such as chromatography, drug delivery, nanotechnology and sensor technology.http://irdpt.ir/Article/27599 microorganism molecular imprinting polymer macromolecular per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332019-064100articlehttp://irdpt.ir/Article/27609per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332019-064100articlehttp://irdpt.ir/Article/27610per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332019-064100articlehttp://irdpt.ir/Article/27611per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332019-064100articlehttp://irdpt.ir/Article/27612per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332019-064100articlehttp://irdpt.ir/Article/27613per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332019-064100articlehttp://irdpt.ir/Article/27614per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332019-064100articlehttp://irdpt.ir/Article/27615