Impact strength enhanced bioplastic polylactic acid by interfacial bonding with hydroxylated natural rubber

International Conference on Materials Research and Innovation

Boochathum, P.^1 ; Mingwanish, W.^1 ; Pivsa-Art, S.^2

Chemistry Department, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangmod, Tungkru, Bangkok

10220, Thailand^1

Chemical and Materials Engineering, Rajamangala University of Technology Thanyaburi, Thailand^2

关键词: Bioplastics;    Continuous phasis;    Interfacial bonding;    Oxygen gas;    Poly lactic acid;    Water vapour;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/526/1/012039/pdf
DOI  :  10.1088/1757-899X/526/1/012039

来源: IOP

【 摘 要 】

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.