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Synergistic reinforcing of poly(lactic acid) by poly(butylene adipate‐ co ‐terephthalate) and alumina nanoparticles
Author(s) -
Chen Jie,
Hu RongRong,
Jin FanLong,
Park SooJin
Publication year - 2021
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.50250
Subject(s) - adipate , materials science , nanocomposite , izod impact strength test , lactic acid , thermal stability , flexural strength , morphology (biology) , scanning electron microscope , polylactic acid , chemical engineering , copolymer , nanoparticle , composite material , polymer , ultimate tensile strength , nanotechnology , bacteria , genetics , biology , engineering
Biodegradable poly(lactic acid) (PLA)/poly(butylene adipate‐ co ‐terephthalate) (PBAT) blends and PLA/PBAT/Al 2 O 3 nanocomposites were fabricated via solution blending. The influence of PBAT and Al 2 O 3 content on the thermal stability, flexural properties, impact strength, and morphology of both the PLA/PBAT blends and the PLA/PBAT/Al 2 O 3 nanocomposites were investigated. The impact strength of the PLA/PBAT/Al 2 O 3 nanocomposites containing 5 wt% PBAT increased from 4.3 to 5.2 kJ/m 2 when the Al 2 O 3 content increased from 0 to 1 wt%. This represents a 62% increase compared to the impact strength of pristine PLA and a 20% increase compared to the impact strength of PLA/PBAT blends containing 5 wt% PBAT. Scanning electron microscopy imaging revealed that the Al 2 O 3 nanoparticles in the PLA/PBAT/Al 2 O 3 nanocomposites function as a compatibilizer to improve the interfacial interaction between the PBAT and the PLA matrix.