Frontal copolymerization in the presence of nano-particles
| Autor: | S. P. Davtyan, A.O. Tonoyan, S. C. Müller, Anahit Z. Varderesyan |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Polymers and Plastics Organic Chemistry Physics::Optics General Physics and Astronomy Nanoparticle Heat capacity Styrene Amorphous solid chemistry.chemical_compound Computer Science::Emerging Technologies chemistry Thermal Materials Chemistry Front velocity Copolymer Composite material Glass transition |
| Zdroj: | European Polymer Journal. 57:182-186 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2014.04.012 |
| Popis: | The influence of added nano-particles (SiO2, TiO2) on the process of frontal copolymerization (acrylamide + methylmetacrylate, acrylamide + styrene) is investigated, and the thermo-physical properties of the obtained nano-composites are studied. Having data of the influence of the amount of nano-particles on the limiting temperature of thermal waves, on the front velocity, and on the law of additive changes concerning the relative thermal capacities of the obtained nano-composites, conclusions can be drawn regarding the positive influence of thermal waves on the process of nano-particle deagglomeration. It is shown, that the dependence of this relative thermal capacity on the amount of nano-particles is non-additive. An analysis of these results shows, that the characteristic sizes of the rigid amorphous fraction formed on the nano-particle surface are characterized not only by the nature and size of the nano-particles, but also by polymeric binding. The thickness of the rigid amorphous fraction is independent of the quantity of nano-additives. ! 2014 Published by Elsevier Ltd. |
| Databáze: | OpenAIRE |
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