TERNARY BLENDS OF PP/PC/SEBS WITH DIFFERENT SEBS CONTENTS WERE PRODUCED VIA MELT BLENDING IN A CO-ROTATING TWIN-SCREW EXTRUDER. THE PHASE MORPHOLOGY OF THE RESULTING BLENDS AND ITS RELATIONSHIP WITH IMPACT BEHAVIORS WERE STUDIED. TRANSMISSION OPTICAL MICROSCOPY (TOM) OF CRACK TIP DAMAGE ZONE AND SCANNING ELECTRON MICROSCOPY (SEM) OF IMPACT FRACTURED SURFACES WERE PERFORMED TO CHARACTERIZE THE FRACTURE MECHANISM. WITH INCREASING THE SEBS CONTENT IN PP/PC/SEBS TERNARY BLENDS, THE NUMBER OF CORE-SHELL PARTICLES INCREASED AND THE SIZE OF CORE-SHELL PARTICLES ENLARGED. PRELIMINARY ANALYSIS OF MICROMECHANICAL DEFORMATION SUGGESTED THAT THE HIGH IMPACT TOUGHNESS OBSERVED FOR SAMPLES CONTAINING 20 AND 30 WT% OF SEBS, WAS ATTRIBUTED TO THE CAVITATION OF RUBBERY SHELL AND CONSEQUENTLY SHEAR YIELDING OF THE MATRIX. THIS PLASTIC DEFORMATION ABSORBED A TREMENDOUS AMOUNT OF ENERGY.

THIS PAPER AIMED TO STUDY THE RELATIONSHIP BETWEEN THE PHASE STRUCTURE AND MECHANICAL PROPERTIES OF POLYAMIDE 6/POLY (STYRENE-CO-ACRYLONITRILE)/POLY (STYRENE-B-(ETHYLENE-CO-BUTYLENE)-B-STYRENE) (PA6/SAN/SEBS) TERNARY BLEND. IN THIS WAY, EFFECTS OF THE MATERIAL PARAMETERS AND BLENDING SEQUENCE ON THE MORPHOLOGICAL AND MECHANICAL PROPERTIES OF TERNARY SAMPLES WERE STUDIED. TAGUCHI EXPERIMENTAL DESIGN METHODOLOGY WAS EMPLOYED TO DESIGN THE EXPERIMENTS AND SELECT THE MATERIAL AND PROCESSING PARAMETERS FOR THE OPTIMIZED MECHANICAL PROPERTIES. TENSILE PROPERTIES AND IMPACT STRENGTH WERE CONSIDERED AS THE RESPONSE VARIABLES. RESULTS DEMONSTRATED A NOTABLE RELATIONSHIP BETWEEN THE PHASE STRUCTURE FORMED FOR TERNARY BLENDS AND RESULTING MECHANICAL OUTCOMES. SURPRISINGLY, FORMATION OF CORE/SHELL MORPHOLOGY DID NOT LEAD TO A SUPERIOR TOUGHNESS. HIGHEST TOUGHNESS WAS OBTAINED WHEN SEBS AND SEBS-G-MA WERE INCORPORATED TO THE BLEND SIMULTANEOUSLY.

THIS RESEARCH DESCRIBE AN INVESTIGATION ON THE EFFECT OF SEBS-G-MA INCORPORATION AND MIXING SEQUENCE ON THE MORPHOLOGICAL PROPERTIES OF POLYAMIDE 6/POLY (STYRENE-CO-ACRYLONITRILE)/POLY (STYRENE-B-(ETHYLENE-CO-BUTYLENE)-BSTYRENE) TERNARY BLEND. TO CATCH THIS GOAL, THREE DIFFERENT SAMPLES WITH VARYING CONCENTRATION RATIO OF SEBS/SEBS-G-MA WERE PREPARED. PHASE STRUCTURE AND SIZE OF DISPERSED PARTICLES WERE STUDIED. RESULTS SHOWED THAT, WHILE BLENDING OF PA6/SAN AND SEBS RESULTED IN THE FORMATION OF CORE/SHELL MORPHOLOGY, SEBS-G-MA INCORPORATION CHANGED THE PHASE STRUCTURE TO TWO MINOR PHASES DISPERSED SEPARATELY. OBSERVATIONS WERE ANALYZED BASED ON THE CHANGE IN THE INTERFACIAL TENSION OF PAIR POLYMERS.

IN THIS WORK, POLYSTYRENE-B-POLY (ETHYLENE-CO-BUTYLENE)-B-POLYSTYRENE (SEBS) WAS USED AS TOUGHENING AGENT FOR POLYAMIDE 6 (PA6) AND THE MALEATED SEBS (SEBS-G-MA) AS COMPATIBILIZER FOR THE BLENDS OF PA6/SEBS WHICH HAVE POTENTIAL USE IN AUTOMOTIVE INDUSTRY. THE BLENDS WERE MIXED IN A TWIN-SCREW EXTRUDER AND MOLDED BY INJECTION MOLDING AND THEN SUBMITTED TO TENSILE STRENGTH AND NOTCHED IZOD IMPACT STRENGTH TESTS, FOLLOWED BY COMPATIBILITY AND MORPHOLOGY EVALUATION OF THE BLENDS BY TAKING SEM MICROGRAPHS OF THE XYLENE-ETCHED FRACTURED SURFACES. RESULTS SHOWED THAT IMPACT STRENGTH OF THE SIMPLE BLENDS INCREASED COMPARED WITH THE NEAT PA6 SAMPLE. HOWEVER ADDITION OF 2% SEBS-G-MA SHOWED FINER MORPHOLOGY AND HIGHER MECHANICAL PROPERTIES.

THIS STUDY AIMS AT INVESTIGATING AND CHARACTERIZING THE INTERPHASE IN POLYAMIDE/POLY (STYRENE-CO-ACRYLONITRILE)/POLY (STYRENE-B-(ETHYLENE-CO-BUTYLENE)-B-STYRENE) (PA6/SAN/SEBS) BLENDS, FILLED WITH TWO DIFFERENT ORGANICALLY MODIFIED MONTMORILLONITE (CLOISITE 30B, CLOISITE 15A. TWO DIFFERENT MIXING SEQUENCES WERE USED TO INVESTIGATE THE ROLE OF KINETIC IN PREFERENTIAL LOCALIZATION OF CLAY. STRUCTURAL PROPERTIES OF THE INTERPHASE HAVE BEEN INVESTIGATED USING XRD COMBINED WITH TEM MICROGRAPHS. LOCALIZATION AND CONTRIBUTION OF NANOCLAY IN MATRIX OR INTERPHASE WERE STUDIED USING LINEAR VISCOELASTIC PROPERTIES.

THE AIM OF THIS PAPER WAS TO INVESTIGATE THE LOCALIZATION OF NANOCLAY IN POLYAMIDE/POLY(STYRENE-CO-ACRYLONITRILE)/POLY(STYRENE-B-(ETHYLENE-CO-BUTYLENE)-B-STYRENE) (PA6/SAN/SEBS) TERNARY BLEND. PREFERENTIAL LOCALIZATION OF TWO DIFFERENT NANOCLAYS (CLOISITE 15A, CLOISITE 30B) IN PA6/SAN/EBS (70/1/15) TERNARY BLEND WAS PREDICTED BASED ON THE THERMODYNAMICALLY YOUNG'S FORMULA AND COMPARED WITH EXPERIMENTAL OBSERVATION. RESULTS SHOWED AN ACCEPTABLE AGREEMENT BETWEEN THE THEORETICAL AND EXPERIMENTAL OBSERVATIONS. EFFECT OF KINETIC ON THE MIGRATION AND DISTRIBUTION OF NANOCLAY IN TERNARY BLEND WAS ALSO STUDIED.

EVAPOTRANSPIRATION (ET) IS AN IMPORTANT PARAMETER FOR WATER RESOURCES MANAGEMENT. USUALLY IT IS ESTIMATED BASED ON (DAILY) WEATHER DATA AT WEATHER STATIONS BECAUSE OF DIFFICULTIES IN ITS MEASUREMENT. CONSIDERING THE SPATIAL VARIATIONS OF THE WEATHER PARAMETERS AND SUBSEQUENTLY OF ET, APPLICATION OF THE METHODS WHICH CAN CONSIDER THESE VARIATIONS ARE INTERESTED. DEVELOPED ALGORITHMS TO ESTIMATE ET BASED ON SATELLITE IMAGES ARE AMONG THOSE METHODS. THE AIM OF THE CURRENT STUDY WAS TO TEST THE ACCURACY OF ESTIMATED ET BASED ON SEBS ALGORITHM USING LANDSAT5 TM IMAGES IN MAHIDASHT, KERMANSHAH PROVINCE, IRAN. FOR THIS PURPOSE, THE ET OF MAIZE WAS ESTIMATED BASED ON FOUR IMAGES OF LANDSAT DURING THE GROWING SEASON OF MAIZE IN YEAR 2010. MEANWHILE, THE ACTUAL ET OF MAIZE WAS MEASURED SIMULTANEOUSLY IN A LYSIMETER AT THE SAME REGION. RESULTS INDICATES REASONABLE MATCH BETWEEN MEASURED AND ESTIMATED CROP EVAPOTRANSPIRATION BY SEBSALGORITHM. THE MAXIMUM DIFFERENCE BETWEEN THE ESTIMATED ACTUAL ET BY SEBS ALGORITHM AND THE MEASURED ET WAS LESS THAN 5%.