24.5 СLAY POLYMER COMPOSITES WITH LONG INDUCTION PERIOD OF POLYMERIZATION.

UDC 631.442.4:541.64:621.763 • 📖 Issue 24/ 2015 • 73-79 pages

 

Yu. Fedorenko, A. Rozko

Yu. Fedorenko– Researcher in SI «Institute of environmental geochemistry of NAS of Ukraine»
A. Rozko– Ph. D (Geol.), Institute of Geochemistry, Mineralogy and Ore Formation of M.P. Semenenko NAS of Ukraine al.rozko@gmail.com

Abstract

The article presents justification of the method of extension of the induction period of clay polymer composites polymerization. This method consists in employing the phenomenon of bentonite (montmorillonite) crystalline grains surface charge change in response to soda ash proportion increase in the mixtures for polymerization of the composites.
It was proved that with the soda proportion increasing 10% of the bentonite mass in the mixture of bentonite with sodium acrylate, ammonium persulfate and N, N’ – methylenebisacrylamide, the conditions for polymerization of the composites without adding traditional reducers such as sodium thiosulfate or ascorbic acid evolve gradually. It has been experimentally found that during the induction period the static shear stress increases by several times while after polymerization it increases by a factor of hundreds. The composition of the composites is given to study their properties especially uniaxial pressure made by the composite during swelling in water and water permeability through the composite at head gradient of about 22. At swelling, the clay polymer composites build up pressure from 43 kPa to 56 kPa depending on the amount of the filling material – sand. The received composites have permeability coefficient of about 10-10 m/sec, swelling index from 8 g/g to 300 g/g, polymerization induction period from 20 minutes to 5 – 6 hours and other signs.

 

Key words: clay polymer composites, polymerization induction period, swelling, water permeability..

 

Article



Reference

    1. Junping Zhang, Ruilfeng Liu, An Li, Aigin Wang (2006), Preparation, swelling behaviors and application of poliacrylamide attapulgite superabsorbent composites , Polymer for advanced 2006, 17, pp. 12– 19.
    2. Grigorian, S., Gulakian, K., Shахnazarov,  А. (1992), Spоsоb poluchenia polimineralnogo kompozita, А.S SSSR No.1707052 А1. Bul. No.3. 23.
    3. Shamanovskaia, N.B., (2012),  «Grushovka» – «Mixailovo»: reshenie naideno!, Мinsk: «RОBT», No. 7, pp. 3 – 6.
    4. Rzhanitsin, B.A. (1986), Himicheskoe zakrepleniе gruntov v stroitelstve, Stroiizdat, Moscow, RU, 264 p.
    5. Abramova, L., Bayburov,  T., Grigorian E. (1992), Poliakrilamid , Himiia, Moscow, RU, 192 p.
    6. Song, J. Wei, T. SH (2012), A method to repair concrete leakage through cracks by synthesizing super – absorbent resin in situ Cement and Concrete Research, 42, pp. 865 – 873.
    7. Evsikova, О., Starodubtsev, S., Khоkhlоv, А. (2002), Sintez, nabuxanie i аdsorbtsionnye svoistva коmpozitov nа оsnove poliakrilamidnogo gelia i bentonita natria, Vysokomolekuliarnie soedinenia, Seria А, 2002, 44, No.5, 802 p.
    8. Fedorenko, Y., Rozko, А., Тuronok, О., Diachenko Е., (2010), Nanokompozity vnedrenia s vysokim soderzhaniem mineralnoy коmponenty, Ukrainskiy mineralogichny zhurnal 32, No. 4, pp. 34 – 40.
    9. Vasilev, N., Gontharuk, V. (1992), Prirodnye sorbenty: svoystva s reaktsionnaia sposobnost, Naukova Dumka, Kyiv, UA, 176 p.
    10. Tarasevich , Y.I., (1988), Stroenie i хimia poverxnosti sloistix silikatov, Naukova Dumka, Kyiv, UA, 248 p.
    11. Fedorenko, Y., Rozko, А., Тuronok, О., Маzer E. (2014), Sposob formuvania tryvalogo induktsiynogo periodu polimerizatsii , Patent No. 90732.
    12. Fedorenko, Y., Zadverniuk, G., Pavlishin G. (2012), Nabuhanie glinopolimernyh nanokompozitov pod davleniem,Техnogenno – ekologichna bezpeka ta tsivilnyy zakxist. Kyiv – Кremenchuk, 4, pp. 142-147.