Premium
Mechanical, thermal, and morphological properties of injection molded poly(lactic acid)/SEBS‐ g ‐MAH/organo‐montmorillonite nanocomposites
Author(s) -
Leu Y. Y.,
Mohd Ishak Z. A.,
Chow W. S.
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.35084
Subject(s) - materials science , nanocomposite , montmorillonite , thermogravimetric analysis , exfoliation joint , composite material , izod impact strength test , thermal stability , heat deflection temperature , differential scanning calorimetry , ultimate tensile strength , compounding , chemical engineering , graphene , physics , engineering , nanotechnology , thermodynamics
Poly(lactic acid)/organo‐montmorillonite (PLA/OMMT) nanocomposites toughened with maleated styrene‐ethylene/butylene‐styrene (SEBS‐ g ‐MAH) were prepared by melt‐compounding using co‐rotating twin‐screw extruder followed by injection molding. The dispersibility and intercalation/exfoliation of OMMT in PLA was characterized using X‐ray diffraction and transmission electron microscopy (TEM). The mechanical properties of the PLA nanocomposites was investigated by tensile and Izod impact tests. Thermogravimetric analyzer and differential scanning calorimeter were used to study the thermal behaviors of the nanocomposite. The homogenous dispersion of the OMMT silicate layers and SEBS‐ g ‐MAH encapsulated OMMT layered silicate can be observed from TEM. Impact strength and elongation at break of the PLA nanocomposites was enhanced significantly by the addition of SEBS‐ g ‐MAH. Thermal stability of the PLA/OMMT nanocomposites was improved in the presence of SEBS‐ g ‐MAH. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012