RHEOLOGICAL CHARACTERISTICS OF NANOCOMPOSITES BASED ON CLINOPTILOLITE AND LINEAR POLYETHYLENE OF LOW DENSITY
Abstract
In the paper the results of the study of the influence of clinoptilolite concentration, shear stress and temperature on the effective viscosity, shear rate and activation energy of the viscous flow of nanocomposites based on linear low-density polyethylene were presented. It was shown that the in the composition of the natural mineral contains kaolinite or nanoclay. During the diffusion of macro chains into the interlayer space of nanoclays, the latter decays and the surfactant, exchanged cations or anions, stearates present there, as a result migrate into the polymer matrix and then, as lubricants, improve the flowability of the melt of the nanocomposite. For the first time it was shown that natural minerals of Azerbaijan belong to the number of bifunctional fillers, which contribute to the enhancement of polymer composites and, at the same time, improve the flowability of their melt. Rheological studies were carried out on the MELT FLOW TESTER, CEAST MF50 (INSTRON, Italy) capillary rheometer in the temperature range of 190-250 °C and the load of 2.16 -21.6 kg. The size of the nanoparticles of the composites was determined using the device model of STA PT1600 Linseiz, Germany, which varied from 14 to 110 nm. The nanoparticles of clinoptilolite were obtained in the analytical mill A-11 at the maximum rotor speed of 28,000 rpm. Flow curves of nanocomposites based on linear low density polyethylene and clinoptilolite were determined. It was established that introduction of 5% wt. clinoptilolite promotes an increase in shear rate 2.62 times. The results of the study of the influence of clinoptilolite concentration on the rheological and physico-mechanical characteristics of nanocomposites were presented. It was shown that when the concentration of clinoptilolite in the polymer matrix increases from 5 to 15 wt% the shear rate is somewhat reduced, but remains higher than that of the initial polyolefin.
For citation:
Kakhramanov N.T., Koseva N.S., Kurbanova R.V., Bayramova I.V., Arzumanova N.B., Ismailzade A.C. Rheological characteristics of nanocomposites based on clinoptilolite and linear polyethylene of low density. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 7. P. 105-112
References
Berlin A.A., Wolfson S.A., Oshman V.G. Principles of creating of composite materials. M.: Khimiya. 1990. 240 p. (in Russian).
Lipatov Yu.S. Physical chemistry of filled polymers. M.: Khimiya. 1977. 304 p. (in Russian).
Kakhramanov N.T., Azizov A.G., Osipchik V.S., Mamedli U.M., Arzumanova N.B. Nanostructured composites and polymer materials sci-ence. Plast. Massy. 2016. N 1-2. P. 49-57 (in Russian).
Ivanchev S.S., Ozerin A.N. Nanostructure in polymeric systems. Visokomolek. Soedineniya. 2006. V. 48. N 8B. P. 1541-1544 (in Russian).
Mikitayev A.K., Kozlov G.V., Zaikov G.E. The polymerous nanocomposites: variety of structural forms and applications. М.: Nauka. 2009. 278 p. (in Russian).
Shitov D.Yu., Kravchenko T.P., Osipchik V.S., Rakov E.G. Composites on the basis of polypropylene with carbon nano-fillers. Plast. Massy. 2013. N 3. P. 29-32 (in Russian).
Olkhov A.A., Rumyantsev B.M., Golshtrakh M.A. Structural parametres of the polymerous composite on the basis of polyeth-ylene and nanocrystal silicon. Plast. Massy. 2013. N 10. P. 6-8 (in Russian).
Gaydadin A.N., Ankudinova N.V., Navrotskiy V.A. Interfacial layer formation in admixed thermoelastoplastics on the basis of olefinic polymers. Plast. Massy. 2011. N 7. P. 9-12 (in Russian).
Chvalun S.N., Novokshonova L.A., Korobko A.P., Brevnov P.N. Polymer-silicate nanocomposites: physical and chemical aspects of synthesis by in situ polymerization. Ros. Khim. zhurn. 2008. V. LII. N 5. P. 53-57 (in Russian).
Gordienko V.P., Salnikov V.G. Influence of dioxide of silicon of the various nature on structure and property of linear polyeth-ylene at the UV-irradiation. Plast. Massy. 2014. N 5-6. P. 9-13 (in Russian).
Gordienko V.P., Salnikov V.G. UV-irradiation actions on structure and properties at elevated temperature of crystallising system: linear polyethylene-nano-size silicon dioxide. Plast. Massy. 2013. N 6. P. 5-10 (in Russian).
Simonov-Emelyanov I.D., Apeksimov N.V., Trofimov A.N. Gelation, compositions and properties of dispersible-filled polymerous nanocomposites. Plast. Massy. 2012. N 6. P. 7-13 (in Russian).
Bashorov M.T., Kozlov G.V., Tlenkopachev M.A., Mikitaev A.K. Polymers as natural nano composites: acceleration mecha-nism. Plast. Massy. 2010. N 12. P. 32-34 (in Russian).
Kodolov V.I., Khokhryakov N.V., Kuznetsov A.P. To the question of the mechanism of the influence of nanostructures on structurally changing media during the formation of "intelligent" composites. Nanotekhnika. 2006. N 3 (7). P. 27-35 (in Russian).
Alieva R.V., Azizov A.G., Martynova G.S., Kakhramanov N.T. Metal-polymeric nano composites based on different polyole-fines matrixes. Perspektiv. Materialy. 2008. Spec. iss. (6). P. 2. P. 207-212 (in Russian).
Kakhramanov N.T., Azizov A.G., Bagirova Sh.R. Mechano-chemical synthesis of nano structured polymer composites. Inter-nat. Sci. Conf. Belarus, Gomel: MPRI. 2015. P. 33 (in Russian).
Kurbanova R.V., Kakhramanov N.T., Muzafarov A.M., Kakhramanly Yu.N. Mechanochemical synthesis and study of hybrid nano composites based on polypropylene and kaoline. Perspektiv. Materialy. 2018. N 4. P. 40-48 (in Russian).
Arzumanova N.B., Kakhramanov N.T., Mamedli U.M., Lyalyaeva R.N., Guliev A.M. Physico-mechanical properties of nanocomposites based on the propylene-ethylene block copolymer. Khimich. probl. 2017. N 2. P. 167-172 (in Russian).
Petryuk I.P. Influence of the parameters of the disperse structure on the content of the interphase layer in the filled polymers. Plast. Massy. 2014. N 5-6. P. 7-9 (in Russian).
Cherdyntseva S.V., Belousov S.I., Krasheninnikov S.V. Influence of the type of organic montmorillonite modifier on the phys-ico-chemical properties of nano composites based on polyamide-6, obtained by mixing in a melt. Plast. Massy. 2013. N 5. P. 39-43 (in Russian).
