Journal
POLYMERS
Volume 9, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/polym9070258
Keywords
lignin; magnesium hydroxide; magnesium hydroxide/lignin hybrid filler; poly(vinyl chloride); composite characterization
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Funding
- Polish Ministry of Science and Higher Education research project [IP2015 032574]
- University of Science and Technology in Bydgoszcz (Poland) [BS-11/2014]
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A functional magnesium hydroxide/lignin hybrid system was prepared by grinding and mixing the pure precursors using a planetary ball mill. In addition, the thermal stability was assessed based on the total mass loss of the hybrid system within the temperature range of 30-1000 degrees C, which amounted to 38%. Moreover, the average particle size was at 4.9 mu m as determined by the laser diffraction method. The effect of addition of the prepared and characterized Mg(OH)(2)/lignin hybrid filler at concentrations ranging from 2.5 wt % to 10 wt % on the processing as well as mechanical and thermal properties of composites on the matrix of the unplasticized PVC compound was also evaluated. The addition of a filler to the poly(vinyl chloride) matrix causes a significant improvement of its thermal stability, which is approximately three times higher compared to a polymer without a filler. Furthermore, the prepared composites are additionally characterized by advantageous mechanical properties, especially higher Young's modulus. A 10% increase in the oxygen index of PVC composites upon addition of 10 wt % hybrid fillers has also been observed, which contributes to an extended range of their application under conditions that require notable fire resistance.
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