ON THE PROCESSING AND PROPERTIES OF CLAY/POLYMER NANOCOMPOSITES CPNC

Authors

  • REFAT EL-SHEIKHY PROFESSOR (RESEARCHER), BUGSHAN RESEARCH CHAIR IN EXPANSIVE SOIL, CIVIL ENGINEERING DEPARTMENT, FACULTY OF ENGINEERING, KING SAUD UNIVERSITY
  • MOSLEH AL-SHAMRANI PROFESSOR, BUGHSHAN RESEARCH CHAIR IN EXPANIVE SOIL, CIVIL ENGINEERING DEPARTMENT, FACULTY OF ENGINEERING, KING SAUD UNIVERSITY

Keywords:

NANOCLAY, HDPE, NANOCOMPOSITES, DRY MIXING, MELT PROCESSING, MECHANICAL PROPERTIES, FRACTURE PROPERTIES

Abstract

AN EXPERIMENTAL INVESTIGATION FOLLOWED BY FUNDAMENTAL CHARACTERIZATION AND DISCUSSION ON THE EFFECT OF NANOCLAY FILLER ON THE MECHANICAL AND FRACTURE PROPERTIES OF POLYMER MATRIX WAS CARRIED OUT. THE STUDY WAS CARRIED OUT ON CLAY/POLYMER NANOCOMPOSITE MADE OF HIGH DENSITY POLYETHYLENE (HDPE M40060) PRODUCED BY SAUDI ARABIAN COMPANY SABIC AND MONTIMORILLONITE MMT NANOCLAY (NANOMER I.34TCN) PRODUCED BY NANOCORE, USA. MMT NANOMER I.34TCN IS SURFACE MODIFIED WITH ORGANIC SURFACTANT TO FACILITATE THE BONDING BETWEEN NANOCLAY AND HDPE.  CURRENT CLAYLPOLYMER NANOCOMPOSITE CPNC WAS PRODUCED BY SPECIAL TECHNIQUE OF MIXING, PROCESSING AND MOLDING. SAMPLES OF NANOCLAY, HDPE AND NANOCOMPOSITE WERE CHARACTERIZED BY XRD, SEM AND EDAX FOR INVESTIGATING THE CHISTILLANITY, DISTRIBUTION, DESPERION, INTERCALATION, EXFOLIATION, HOMOGENITY AND DEFECTS. THESE  ASPECTS GOVERN CPNC  PROCESSING AND BOND BETWEEN NANOCLAY AND HDPE WHICH CONTROLS THE MECHANICAL AND FRACTURE PROPERTIES. SHEETS OF THE PRODUCED CPNC WERE PREPARED FOR MECHANICAL AND FRACTURE TESTING. MECHANICAL PROPERTIES SUCH AS TENSILE STRENGTH, YIELD STRESS AND ELONGATION WERE TESTED AND COMPARED FOR BOTH OF PURE HDPE AND CPNC. FRACTURE MECHANICS TESTS FOR CHECKING AND COMPARING THE CRITICAL STRESS INTENSITY FACTOR DUE TO STRESS CONCENTRATION AT THE CRACK TIPS FOR MODE I CRACK KIC WAS OUT FOR PRECRACKED SAMPLES SUBJECTED TO UNIAXIAL TENSILE STRESSES. THE RESULTS SHOWED THAT PROCEDURES OF MIXING, PROCESSING TECHNIQUE COULD PRODUCE NANOCOMPOSITE WITH ENHANCED MECHANICAL AND FRACTURE PROPERTIES.  

Author Biography

REFAT EL-SHEIKHY, PROFESSOR (RESEARCHER), BUGSHAN RESEARCH CHAIR IN EXPANSIVE SOIL, CIVIL ENGINEERING DEPARTMENT, FACULTY OF ENGINEERING, KING SAUD UNIVERSITY

PROFESSOR (RESEARCHER), BUGSHAN RESEARCH CHAIR IN EXPANSIVE SOIL, CIVIL ENGINEERING DEPARTMENT, FACULTY OF ENGINEERING, KING SAUD UNIVERSITY

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Published

2015-02-07

Issue

Vol. 12 No. 2 (2015)

Section

Articles

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