Journal
MOLECULES
Volume 22, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/molecules22111920
Keywords
lignin-Al2O3 hybrid materials; abrasive tools; lignin; thermomechanical properties; rheological studies
Funding
- National Centre of Science Poland [DEC-2014/15/B/ST8/02321]
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The main aim of the present study was the preparation and comprehensive characterization of innovative additives to abrasive materials based on functional, pro-ecological lignin-alumina hybrid fillers. The behavior of lignin, alumina and lignin-Al2O3 hybrids in a resin matrix was explained on the basis of their surface and application properties determined by inverse gas chromatography, the degree of adhesion/cohesion between components, thermomechanical and rheological properties. On the basis of the presented results, a hypothetical mechanism of interactions between lignin and Al2O3 as well as between lignin-Al2O3 hybrids and phenolic resins was proposed. It was concluded that lignin compounds can provide new, promising properties for a phenolic binder combining the good properties of this biopolymer as a plasticizer and of alumina as a filler improving mechanical and thermal properties. The use of such materials may be relatively non-complicated and efficient way to improve the performance of bonded abrasive tools.
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