Open AccessImpact strength enhanced bioplastic polylactic acid by interfacial bonding with hydroxylated natural rubber
Author(s) -
Ploenpit Boochathum,
W Mingwanish,
Sommai PivsaArt
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/526/1/012039
Subject(s) - polylactic acid , materials science , oxygen , bioplastic , compatibility (geochemistry) , ultimate tensile strength , composite material , composition (language) , izod impact strength test , natural rubber , chemical engineering , chemistry , polymer , organic chemistry , waste management , linguistics , philosophy , engineering
The effect of functionality of HNR and weight composition of PLA:HNR on the mechanical properties, impact strength, water vapour and oxygen gas transmission rates was studied. From morphology result, co-continuous phases in PLA:HNR050 and PLA:HNR035 were more obvious than PLA:HNR025. The observed co-continuous phases might be caused by the interfacial bonding between PLA phase and HNR phase. Better compatibility between HNR035 and PLA was believed to result in the considerably improvement of impact strength and slight reduction of mechanical properties of PLA. It is interesting that water vapour and oxygen gas transmission rates of PLA significantly increased with HNR035 loading. As a result, the appropriate weight composition of HNR035 blended with PLA was clarified to be 70:30 that was about tipple higher than the composition of NR as reported in the previous studies.