Nanoparticle Gels Obtained from Hardwood and Softwood Bark for Reinforcing of Paper


Article Preview

For reinforcing of paper, nanoparticle gels from black alder, birch and pine bark were obtained. Non-extracted bark and that extracted in biorefinery were used. For producing nanoparticles, the materials were destructed using the thermocatalytic destruction method and then dispersed in water medium in a ball mill. At a sufficient concentration, gel-like dispersions were obtained, which contained nanoparticles with the size ~300 nm. The effect of nanoparticle gels on the properties of paper sheets was investigated by introducing the dissolved gels in paper furnish and by covering both sides of paper sheets with nanoparticle gel coatings. It has been established that the nanoparticle fillers increase the tensile and burst strength. The nanoparticle fillers from extracted bark increase the mechanical indices to a higher extent. The coatings from nanoparticle gels considerably improve the Gurley air resistance of paper and increase the mechanical indices of paper sheets, especially burst strength. The effect of nanoparticle gel coatings is dependent on the coating thickness and gel concentration. The coatings decrease the tensile strength in a wet state.



Solid State Phenomena (Volume 267)

Edited by:

Regita Bendikienė and Kazimieras Juzėnas




M. Laka et al., "Nanoparticle Gels Obtained from Hardwood and Softwood Bark for Reinforcing of Paper", Solid State Phenomena, Vol. 267, pp. 12-16, 2017

Online since:

October 2017




* - Corresponding Author

[1] H.S. Yang, M.P. Wolcott, H.S. Kim, S. Kim, H.J. Kim, Properties of lignocellulosic material filled polypropylene biocomposites made of different manufacturing processes, Polym. Test. 25 (2006) 668-676.


[2] M. Laka, S. Chernyavskaya, G. Shulga, V. Shapovalov, A. Valenkov, M. Tavroginskaya, Use of cellulose-containing fillers in composites with polypropylene, Mater. Sci. (Medžiagotyra). 17 (2011) 150-154.


[3] A. Karmarkar, S.S. Chauhan, J.M. Modac, M. Chanda, Mechanical properties of wood-fiber reinforced polypropylene composites, Composites Part A. 38 (2007) 227-233.


[4] A. Treimanis, M. Laka, S. Chernyavskaya, J. Ganster, J. Erdmann, L. Ziegler, I. Birska, Microcrystalline cellulose fillers for use in hybrid composites with polyethylene and lignin, Cell. Chem. Technol. 50 (1) (2016) 117-125.

[5] M. Laka, S. Chernyavskaya, A. Treimanis, I. Birska, L. Vikele, Use of hardwood processing wastes for producing nanoparticle filler for paper, in: Proceedings of 4th Scientific Conference on Hardwood Processing, Florence, Italy, October 7-9, 2013, 354-355.

[6] M. Laka, L. Vikele, L. Rozenberga, S. Janceva, Nanoparticle fillers obtained from wood processing wastes for reinforcing of paper, in: AIP Conference Proceedings of 8th International Conference on Times of Polymers and Composites, Ischia, Italy, June, 1736. (2016).


[7] M. Laka, A. Treimanis, S. Chernyavskaya, M. Skute, L. Rozenberga, L. Vikele, Micro-nanoparticle gels obtained from bark for their use alone and with chitosan and Na-CMC in paper coatings, Holzforschung. 69 (6) (2015) 745-749.


[8] G. Telysheva, T. Dizhbite, O. Bikovens, J. Ponomarenko, S. Janceva, J. Krasilnikova, Structure and antioxidant activity of diarylheptanoids extracted from bark of grey alder (Alnus incana) and potential of biorefinery-based bark processing of European trees, Holzforschung. 65 (2011).


[9] M. Laka, S. Chernyavskaya, Latvian Republic Patent 11184 (1996).