POLYAMIDES CONSTANTLY ATTRACT MUCH INTEREST BECAUSE OF THEIR UNIQUE PROPERTY COMBINATION. ALTHOUGH THEY SHOW EXCEPTIONAL THERMAL AND OXIDATIVE STABILITY, CHEMICAL RESISTANCE AND LOW FLAMMABILITY, THEIR INSOLUBILITY IN COMMON ORGANIC SOLVENTS AND HIGH GLASS AND SOFTENING TEMPERATURE....

IN RECENT YEARS, PREPARATION OF SEMICONDUCTOR NANOPARTICLES HAS ATTRACTED GREAT ATTENTION BECAUSE OF THEIR OPTICAL AND ELECTRONIC PROPERTIES [1, 2] ZNS NANOPARTICLE WITH THE WIDE BAND GAP IT CAN BE USED FOR VARIOUS DEVICE APPLICATIONS [3]. IN THE PRESENT WORK, WE DESCRIBE THE PREPARATION OF ZNS....

IN THIS STUDY THERMAL PROPERTIES IN A SYSTEM OF FUNCTIONALIZED MULTIWALL-CARBON NANOTUBES (MWCNT) DISPERSED IN WATERBORNE POLYURETHANE (WBPU) WERE INVESTIGATED. THE RESULT OF THERMO GRAVIMETRIC ANALYSIS SHOWS THAT THE THERMAL DEGRADATION TEMPERATURE OF CARBON NANOTUBE/ WATERBORNE POLYURETHANE NANOCOMPOSITES AT MAXIMUM WEIGHT LOSS RATE INCREASED FROM 340OC TO 367OC BY ADDING CNTS (FOR NANOCOMPOSITE CONTAINS 1 WT% CNTS). DSC CURVES INDICATE THAT THE INCREASE IN TG DUE TO ADDING CNTS IS MAINLY ATTRIBUTED TO INTERFACIAL INTERACTIONS THROUGH HYDROGEN BONDING BETWEEN THE POLYMER MATRIX AND CNTS.

AMIDES ARE A VERY IMPORTANT CLASS OF ORGANIC COMPOUNDS WITH A WIDE RANGE OF APPLICATIONS.SOME DERIVATIVES OF AMIDES EXHIBIT BIOLOGICAL PROPERTIES SUCH AS ANTHELMINTIC, ANTIHISTAMINE, ANTIFUNGAL AND ANTIBACTERIAL [1]. THE CLASSICAL METHOD FOR THE SYNTHESIS OF AMIDES IS THE REACTION OF CARBOXYLIC ACIDS WITH AMINES AT HIGH TEMPERATURE. DUE TO THE LOW ACTIVITY OF CARBOXYLIC ACIDS, VARIOUS METHODS FOR THEIR ACTIVATION HAVE BEEN REPORTED IN THE LITERATURE [2]. DRAW BACKS OF THESE METHODS INCLUDE MODEST YIELDS, EXPENSIVE COUPLING REAGENTS AND DIFFICULTY IN REMOVAL OF EXCESS REAGENTS AND BYPRODUCTS. ...

THE RECENT PROGRESS IN THE PHOSPHORAMIDATES CHEMISTRY IS OWING TO THEIR SIGNIFICANT APPLICATIONS IN MEDICINE [1-3]. THE INHIBITORY POTENCY OF CARBACYLAMIDOPHOSPHATES WITH THE GENERAL FORMULA RC(O)NHP(O)R1R2 (THAT ARE ONE GROUP OF PHOSPHORAMIDATES) ON UREASE ACTIVITY HAS BEEN STUDIED [4]. CONSIDERING MANY UNKNOWN POINTS ABOUT SYNTHESIS OF PHOSPHOR AMIDES NANOPARTICLES, THE BASIS OF THIS RESEARCH IS ON THE BETTER AND DEEPER UNDERSTANDING OF THE SYNTHESIS, SPECTROSCOPIC AND STRUCTURAL CHARACTERISTICS OF THE PHOSPHOR AMIDES AND ALSO THE APPLICATIONS OF THESE COMPOUNDS, ESPECIALLY IN THE FIELD OF FIRE RETARDANT ON COTTON FIBERS. IN THIS RESEARCH, FIRST ONE PHOSPHOR AMIDE INTERMEDIATE PHCONHP(O)CL2 WAS SYNTHESIZED. THEN THIS INTERMEDIATE WAS REACTED WITH THE H2O AND ALLYLAMINE AND TWO NEW COMPOUNDS WITH FORMULA PHCONHP(O)X2, WHERE X = OH (1) AND NH-CH2-CH=CH2 (2) WAS OBTAINED. THE 1H, 13C, 31P NMR, FT-IR AND FLUORESCENCE SPECTRA OF THESE COMPOUNDS WERE STUDIED. IN ADDITION TO THE ABOVE ANALYSES, THE XRD PATTERNS AND FE-SEM IMAGES OF THE NANOPARTICLES PREPARED BY ULTRASONIC METHOD WERE USED TO INVESTIGATE THE SHAPE AND SIZE OF THE NANOPARTICLES. THE 31P NMR SPECTRA INDICATED THE PHOSPHORUS CHEMICAL SHIFTS AT 2.15 AND 10.29 PPM FOR COMPOUNDS 1 AND 2, RESPECTIVELY. THE FT-IR SPECTRA REVEALED THE P=O STRETCHING FREQUENCIES FOR 1 AND 2 AT 1242, 1273 CM-1, RESPECTIVELY. THE XRD AND FE-SEM ANALYSES CONFIRMED THAT THE PARTICLES ARE SPHERICAL IN MORPHOLOGY ABOUT 30-40 NM IN SIZE.