TY - JOUR
T1 - Rheological behavior and morphological and interfacial properties of PLA/TPE blends
AU - Bernardes, Giordano Pierozan
AU - da Rosa Luiz, Nathália
AU - Santana, Ruth Marlene Campomanes
AU - de Camargo Forte, Maria Madalena
N1 - Publisher Copyright:
© 2019 Wiley Periodicals, Inc.
PY - 2019/10/10
Y1 - 2019/10/10
N2 - Rheological and interfacial tension data were employed to predict the morphology and thermal and mechanical properties of noncompatibilized and compatibilized poly(lactic acid) (PLA)/thermoplastic elastomer (TPE) blends. PLA was melt blended with thermoplastic polyurethane (TPU) and ethylene elastomer (EE) and compatibilized by ethylene–butyl acrylate–glycidyl methacrylate (EBG) in an internal mixer chamber. Both TPU and EE TPEs have higher viscosities than PLA, and the interfacial properties evaluated have revealed better adhesion between domains of PLA–TPU. The efficiency of the compatibilizer agent EBG depended on the TPE type inferred by modifications in the scanning electron microscopy images of PLA/TPE blends and by the Izod impact strength (improved by 23%). The EBG was more effective in the PLA/TPU blend. The TPEs and EBG did not affect the PLA thermal stability, and no thermal event was observed in the usual PLA extrusion and injection temperature range.
AB - Rheological and interfacial tension data were employed to predict the morphology and thermal and mechanical properties of noncompatibilized and compatibilized poly(lactic acid) (PLA)/thermoplastic elastomer (TPE) blends. PLA was melt blended with thermoplastic polyurethane (TPU) and ethylene elastomer (EE) and compatibilized by ethylene–butyl acrylate–glycidyl methacrylate (EBG) in an internal mixer chamber. Both TPU and EE TPEs have higher viscosities than PLA, and the interfacial properties evaluated have revealed better adhesion between domains of PLA–TPU. The efficiency of the compatibilizer agent EBG depended on the TPE type inferred by modifications in the scanning electron microscopy images of PLA/TPE blends and by the Izod impact strength (improved by 23%). The EBG was more effective in the PLA/TPU blend. The TPEs and EBG did not affect the PLA thermal stability, and no thermal event was observed in the usual PLA extrusion and injection temperature range.
KW - PLA
KW - TPE
KW - compatibilization
KW - mechanical properties
KW - thermal properties
UR - http://www.scopus.com/inward/record.url?scp=85066042268&partnerID=8YFLogxK
U2 - 10.1002/app.47962
DO - 10.1002/app.47962
M3 - Article
AN - SCOPUS:85066042268
SN - 0021-8995
VL - 136
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 38
M1 - 47962
ER -