Open AccessINFLUENCE OF KRAFT LIGNIN ON THE PROPERTIES OF RUBBER COMPOSITES
Author(s) -
Matshidiso Makhalema,
Percy Hlangothi,
S.V. Motloung,
L.F. Koao,
T.E. Motaung
Publication year - 2021
Publication title -
wood research
Language(s) - English
Resource type - Journals
eISSN - 2729-8906
pISSN - 1336-4561
DOI - 10.37763/wr.1336-4561/66.2.285296
Subject(s) - lignin , ultimate tensile strength , thermogravimetric analysis , materials science , composite material , thermal stability , natural rubber , fourier transform infrared spectroscopy , composite number , glass transition , scanning electron microscope , elongation , chemical engineering , chemistry , polymer , organic chemistry , engineering
The influence of lignin content on reclaimed rubber (RR)/natural rubber (NR) blend composite properties has successfully been studied. Scanning electron microscopy (SEM) were used to understand morphology. Fourier-transform infrared spectroscopy (FTIR) for the possible chemical interaction, whereas thermogravimetric analysis (TGA) and tensile tester were usedto predict strength and elongation for possible practical applications. The results indicated that the presence of lignin forms cavities which seemed to arise from complex interactions of the blend with the lignin. Those cavities dominated tensile fractured surface and the increase in lignin indicated inconsistencies of interfacial interactions. Lignin RR/NR blend composites revealed a drop in tensile strength and shift in glass transition temperature, except for the highest lignin containing blend composite. More active interactive constituent of the blend appeared to be NR. The interaction has not favored the thermal stability and crosslinking density.