Lignin-containing polymers properties

In this chapter, polymer properties related to thermal stability and molecular motion of lignin in the solid state are discussed. Several papers on the molecular motion of in situ lignin have been published [39-42]. However, it is difficult to measure a single component in a biocomposite such as wood, since it contains three macromolecular species cellulose, hemicellulose, and lignin. In the past, the sensitivity of available experimental instruments was insufficient to detect the molecular... 

Saraf, V., Glasser, W. G., Wilkes, G. L., and McGrath, G. E. Engineering plastics from lignin IV. Structure property relationships of PEG-containing polyurethane networks, Journal Applied of Polymer Science, 30, 2207 (1985). Sarkar, S. and Adhikari, B. Thermal stability of lignin-hydroxy-terminated polybutadiene-co-polyurethanes. Polymer Degradation and Stability, 73, 169-175 (2001). 

Many, but not all, macromolecules are created by the mutual chemical chain reactions of small molecules called monomers and the arising species contain repeated small units, mers. In that case they are designated oligomers or polymers depending on their molar mass. This means that all oligomers and polymers can be called macromolecular substances but not all macromolecular substances are of oligomeric or polymeric nature (lignin, humin substances, etc.). Properties of macromolecular systems depend on... 

In the present study, PU s containing lignin were investigated with reference to thermal stability, which is one of the basic thermal properties of polymers. Thermal degradation of PU s which were obtained from solvolysis lignin was studied using thermogravimetry (TG). The inflammability of... 

Darie, R.N., Vasile, C., Cazacu, G., Kozlowski, M. Effect of lignin incorporation on some physico-mechanical properties of blends containing synthetic polymers. 7th International Conference APT 2007 Advances in Plastics Technology, Katowice, Poland 12-15 Nov, 2007... 

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