LIVING CONTROLLED RADICAL polymerization HAS BEEN A POWERFUL TECHNIQUE TOSYNTHESIZE WELL-DEFINED STRUCTURE POLYMER BY CONTROLLING MOLECULAR WEIGHT, MOLECULAR WEIGHT DISTRIBUTION AND TAILORED ARCHITECTURE. THREE ‘‘LIVING’’ RADICALpolymerization TECHNIQUES WHICH ARE RECEIVING MORE AND MORE ATTENTION INACADEMIA ARE NITROXIDE-MEDIATED RADICAL polymerization (NMP) [1], ATOM TRANSFERRADICAL polymerization (ATRP) [2], AND REVERSIBLE ADDITION–FRAGMENTATION CHAINTRANSFER (RAFT) polymerization [3]. RAFT polymerization WAS CONSIDERED AS ONE OFTHE MOST PROMISING CONTROLLED FREE RADICAL polymerization DUE TO ITS COMPATIBILITYWITH A WIDE RANGE OF MONOMERS AND ITS VERSATILITY.IN THE PRESENT WORK, A NOVEL NANOCOMPOSITE WAS PREPARED BASED ON POLY (METHYL METHACRYLATE) /SIO2 USING 4-CYANO-4- [(PHENYLCARBOTHIOYL) SULFANYL] PENTANOIC ACID AS A RAFT AGENT (FIGURE 1).THE STRUCTURE, MORPHOLOGY AND THERMAL PROPERTIES OF THE NANOCOMPOSITES WERE CHARACTERIZED USING FOURIER TRANSFORM INFRARED (FT-IR), HNMR, TRANSMISSION ELECTRON MICROSCOPY (TEM), THERMOGRAVIMETRIC ANALYSIS (TGA), AND DIFFERENTIAL SCANNING CALORIMETRY (DSC), RESPECTIVELY. THE XRD RESULTS ALSO SHOWED THE PROPER INTERCALATION OF POLYMER CHAINS BETWEEN THE SILICATE LAYERS.

POLYMER–INORGANIC HYBRIDS, BASED ON THE INTERCALATION OF POLYMER CHAINS INTO LAYERED SILICATES, FORM A CLASS OF NANOCOMPOSITES THAT HAVE RECENTLY RECEIVED CONSIDERABLE ATTENTION FROM BOTH ACADEMIA AND INDUSTRY AS AN EFFECTIVE MEANS OF OVERCOMING THE SHORTCOMINGS OF CONVENTIONAL MINERAL-FILLED...

NOWADAYS, ONE OF THE CONCERNS OF HUMAN SOCIETY IS THE CANCER TOPIC, ACCORDING TONUMEROUS CANCER-CAUSING FACTORS IN THE DEVELOPED WORLD. IN ORDER TO OVERCOME THESE PROBLEMSTODAY, DRUGS TARGETING STRATEGY IS USED. TARGETED DRUG DELIVERY IS OFTEN DIVIDED INTO TWOCATEGORIES, PASSIVE AND ACTIVE. IN ACTIVE TARGETING, THERAPEUTIC AGENT ALONG WITH A CARRIER, ATTACHED TO A SPECIFIC CELL OR TISSUE. ACTIVE TARGETING BENEFITS INCLUDE OF ABILITY TO MAINTAINDRUG CONCENTRATION IN RELATIVELY CONSTANT FOR A SPECIFIED PERIOD OF TIME, THE POSSIBILITY OFDELIVERING MEDICINE TO A PARTICULAR ORGAN OR TISSUE, TAKE DELIVERY IN NANOMETER DIMENSIONSANDETC [1, 2]…..

CELLULOSE ARE BIODEGRADABLE AND IS PREDICTED AS AN ALTERNATIVE TO SYNTHETIC MATERIALS IN THISPROJECT.THE MAIN DISADVANTAGEOUS OF CELLULOSE IS ITS LOW SOLUBILITY. THE polymerization OF THECELLULOSE CHANGED ITS SURFACE PROPERTIES AND ALSO INCREASED ITS SOLUBILITY IN POLARSOLVENTS.1 REVERSIBLE ADDITION – FRAGMENTATION CHAIN TRANSFER polymerization (RAFT) WAS USEDTO GRAFTNOVEL POLYMERIC COMPONENT TOTHE CELLULOSE….

EXPLOITATION OF THE FASCINATING PROPERTIES OF INORGANIC NANOPARTICLES, SUCH AS OPTICAL, MAGNETIC AND ELECTRONIC PROPERTIES REQUIRES THE PARTICLES TO BE DISPERSED HOMOGENEOUSLY. THE BEST WAY TO AVOID AGGREGATION IS TO GRAFT POLYMER CHAINS ONTO THE PARTICLES COVALENTLY, FORMING ORGANICEINORGANIC HYBRID...

IN RECENT DECADES, MUCH ATTENTION HAS BEEN PAID TO POLYMER/CLAY NANOCOMPOSITES AS ADVANCED POLYMERIC MATERIALS. RELATIVELY LOW LOADING OF CLAY HAS RESULTED IN SIGNIFICANT IMPROVEMENTS IN MECHANICAL PROPERTIES [1], THERMAL STABILITY AND FLAME RETARDANCY [2], MAGNETIC AND ELECTRIC PROPERTIES [3], GAS PERMEATION [4], AND ENHANCED MODULUS FOR THE SYNERGISM BETWEEN THE COMPONENTS. ON THE CONTRARY, THE DEGREE OF DISPERSION OF THE CLAY PLATELETS INTO THE MATRIX DETERMINES THE STRUCTURE OF NANOCOMPOSITES AND AFFECTS THE AFOREMENTIONED PROPERTIES. ...