Effect of talc and diatomite on compatible, morphological, and mechanical behavior of PLA/PBAT blends
Ding Yue,
Zhang Cai,
Luo Congcong,
Chen Ying,
Zhou Yingmei,
Yao Bing,
Dong Liming,
Du Xihua,
Ji Junhui
Affiliations
Ding Yue
School of Material and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China
Zhang Cai
School of Material and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China
Luo Congcong
School of Material and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China
Chen Ying
School of Material and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China
Zhou Yingmei
School of Material and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China
Yao Bing
School of Material and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China
Dong Liming
School of Material and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China
Du Xihua
School of Material and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China
Ji Junhui
National Engineering Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Biodegradable nanocomposites were prepared by melt blending biodegradable poly(lactic acid) (PLA) and poly(butylene adipate-co-butylene terephthalate) (PBAT) (70/30, w/w) with diatomite or talc (1–7%). From the SEM test, the particles were transported to the interface of two phases, which acted as an interface modifier to strengthen the interfacial adhesion between PLA and PBAT. Talc and diatomite acted as nucleating agents to improve the crystallization of PBAT in the blends by DSC analysis. Moreover, adding the particles improved the tensile and impact toughness of the blends. The elongation at break with 5% talc was 78% (vs ∼21%) and the impact strength was 15 kJ/m2 (vs ∼6.5 kJ/m2). The rheological measurement revealed that the talc and diatomite reduced the viscosity of the blends. The results showed a good possibility of using talc- and diatomite-filled PLA/PBAT blends with high toughness for green-packaging and bio-membranes application.
