agglomeration

Multi-walled carbon nanotubes and graphite nanoplatelets were functionalized via acid treatment to overcome the problem of agglomeration. Fourier transform infrared spectroscopy showed the chemical modification of the nanocarbons while the general relationship between the chemical treatment and the defects population was analyzed by Raman spectroscopy. The information regarding the mass loss and impurities is obtained from the thermogravimetric analysis. X-ray diffraction showed the effect of acid treatment on the physical states of the nanocarbons including the crystalline texture.

The article is a result of an analytical research on development of relations between the
city and suburban area. An attempt to define main factors that may be included into a future
strategy of balanced development and to avoid a number of problems in the organization of group
forms of settlement in the big cities' influence zone. The decentralization processes in the
governance system constitute the social and economic potential for creation of a system of
common interests in development, and not for destruction of both cities and suburban area.

With the return of Ukraine's independence, its settlement system has received the opportunity for self-formation within the national territory. The cities of various evolution, magnitude, and importance with a long historical development comprise the backbone of this system. In modern conditions the formation of regional settlement system takes place, changes in the functioning of individual cities and the formation of spheres of influence of major cities become more vivid.