Influence of Lignin and Polymeric Diphenylmethane Diisocyante Addition on the Properties of Poly(butylene succinate)/Wood Flour Composite

Poly(butylene succinate) (PBS)/wood flour (WF) composites with different WF content were prepared by twin-screw extrusion at 160 °C. With increasing WF content, the tensile strength of the PBS/WF composite without polymeric diphenylmethane diisocyante (pMDI) decreased, while that of the composite wi...

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Bibliographic Details
Published in:Polymers 2019-07, Vol.11 (7), p.1161
Main Authors: Park, Chan-Woo, Youe, Won-Jae, Han, Song-Yi, Park, Ji-Soo, Lee, Eun-Ah, Park, Jung-Yoon, Kwon, Gu-Joong, Kim, Seok-Ju, Lee, Seung-Hwan
Format: Article
Language:English
Subjects:
Addition polymerization
Composite materials
Crystallization
Diphenyl methane
Extrusion
Flour
Humidity
Laboratories
Lignin
Lignocellulose
Liquor
Melt flow index
Morphology
Polymers
Tensile properties
Tensile strength
Thermal stability
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Summary:Poly(butylene succinate) (PBS)/wood flour (WF) composites with different WF content were prepared by twin-screw extrusion at 160 °C. With increasing WF content, the tensile strength of the PBS/WF composite without polymeric diphenylmethane diisocyante (pMDI) decreased, while that of the composite with pMDI increased. The addition of kraft lignin (KL) deteriorated the tensile properties of the composites both with and without pMDI. The melt flow index (MFI) decreased with increasing WF content, but increased with increasing KL content. The addition of pMDI caused an increase in the melt viscosity of the PBS/WF and PBS/WF/KL composites, resulting in a decrease in the MFI. The composites had lower thermal stability than neat PBS. The exotherms of the PBS/WF (50/50) composite appeared at a higher temperature than that of the neat PBS, but the PBS/WF/KL (50/50/20) composites had similar exotherms as the neat PBS. The addition of KL caused a decrease in the crystallization rate of PBS.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym11071161