Tsapko Y. Conceptual framework and technological methods to prevent progressive destruction of cellulose materials

The object of research is processes occurring in the protective coatings of cellulose materials for their modification and exploitation, properties of the modified materials and technological measures. The subject of research is modified cellulose building materials and products. The goal is to create a scientific and technical bases to prevent progressive destruction of cellulose materials due to changes in the degree of disclosure of features of destruction in the modification and development of technological methods and recommendations to improve the sustainability of products. Research methods: theoretical in the mathematical simulation and studied the rate of burnout, biodestruction and leaching; methods of physical and chemical analysis; methods of special tests that are regulated by current standards. The novelty of this development of the theory of degradation of materials under the influence of biological and thermal effects, which are based the data received on the laws of slowing down the processes of decomposition and mass-modified products; the regularities of changes in the state of the contact zone of cellulose material modifier - water absorption, leaching, impermeability, depending on the reactivity of the modifier and proved the relationship of this condition with the ability to counteract the biological material and the thermal degradation; discloses a mechanism of forming an adhesive contact zone "modifier cellulose material" and it is shown that minimizing the interfacial free energy of the surface due to the formation of chemical bonds with the modifier compounds alcohol groups of cellulose and lignin; justified the use of polymeric antiseptic and water repellent which penetrate into the pores of the wood retardant, water-repellent capillaries and microcracks surface, forming an integrated protective repellent, improve thermal and biological resistance of composites; reasonable and experimentally confirmed the synergistic effect of reducing the biological and thermal decomposition at a joint modification of cellulose materials fire-retardant polymer antiseptic and water repellents, efficiency evaluated by criteria fire-, bio- and water resistance, the fundamentals of effective technology modification products. Define the technical and economic efficiency of development. Branch is the construction.