1-부틸아민과 에피클로로히드린의 축합체인 PBE의 응집작용 특성

김학성; 주득종

Journal of the Korean Industrial and Engineering Chemistry, Vol.9, No.4, 569-573, August, 1998

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1-부틸아민과 에피클로로히드린의 축합체인 PBE의 응집작용 특성

Flocculation Characteristics of the Polycondensate of 1-Butylamine and Epichlorohydrin(PBE)

김학성, 주득종

초록

부틸아민과 에피클로로히드린의 축합체 (PBE)인 새로운 수용성고분자를 합성하고, 적외선 스펙트럼과 레이저 광산란에 의한 산란광의 강도 측정에 의한 분자량 결정, 그리고 제타전위를 측정하여 PBE의 특성을 결정하였으며, PBE와 콜로이드상 벤토나이트입자들의 상호작용에 관해서도 연구 하였다. PBE는 그 골격에 3차 암모늄기를 가지고 있으며 분자량은 1600정도로 비교적 작은 편이었으며, PBE가 콜로이드성 벤토나이트입자에 흡착되는 현상은 Langmuir흡착등온식으로 잘 묘사되었다. 음전기를 띤 콜로이드성 벤토나이트입자 표면에 PBE의 흡착이 진행되면서 ζ전위가 음의 값에서 양의 값으로 변하는 결과로부터 PBE가 양이온성고분자전해질인 것과 pH변화 및 Ca²⁺이온의 농도변화로부터 PBE가 벤토나이트 표면에 흡착되는 현상은 양이온교환형식으로 이루어지는 것을 확인하였다. 또한 PBE는 무기계 콜로이드인 벤토나이트 현탁액과 소화슬러지에 대해서 응집효과를 가지고 있음이 밝혀졌다.

A water soluble polymer, polycondensate of 1-butylamine and epichlorohydrin(PBE), was synthesized by condensation of 1-butylamine and epochlorohydrin. The characteristics of PBE were determined by IR spectroscopy, low angle light scattering measurement, and ζ potential measurement. Its interactions with colloidal bentonite particles in aqueous medium were also studied. The results of the studies are as follows : PBE is a cationic polyelectrolyte carrying tertiary ammonium ions on its backbone. The average molecular weight of PBE is found to be about 1,600. The adsorption of PBE on the colloidal bentonite particles are well described with Langmuir adsorption isotherm. As the amounts of PBE adsorbed on the bentonite particles increase, the ζ potential of the particles changes its sign from negative to positive. This inversion of charge confirms that PBE is cationic in nature. The adsorption of PBE onto the bentonite particles was found to occur through cation exchange reaction. It has been shown that PBE has flocculation effects on the colloidal suspension of bentonite. It has also enhanced effects of filtrability on the digested sludge.

Keywords:Flocculation;Cationic Polyelectrolyte;Adsorption Isotherm;Butylamine;Epichlorhydrin

[References]

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Kim HS, Lamarche C, Verdier A, Colloid Polym. Sci., 261, 64 (1983)
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Shinoda K, "Colloidal Surfactants," 112, Academic Press, NY (1963)
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J. AWWA, AWWA Research Foundation Report, 68, 46 (1976)
Kim HS, Joo DJ, in preparation

[1] Eckenfelder WW, "Industrial Water Pollution Control," McGraw-Hill, Inc., NY (1989)

[2] Boeglin JC, T. S. M.-L'EAU, 16, 363 (1970)

[3] Metcarf and Eddy, Inc., "Wastewater Engineering, Treatment, Disposal, Reuse," McGraw-Hill, New York (1979)

[4] Kim HS, "Contribution a l'etude des Interactions Entre une Suspension Argileuse et des Poly Electrolytes Cationiques," Ph.D. Dissertation, Universite Paul Sabatier, Toulouse, France (1983)

[5] Verdier A, Kim HS, "Flocculation in Biotechnology and Separation System," ed. Y.A. Attia, 201, Elsevier, Amsterdam (1987)

[6] Kim HS, Lamarche C, Verdier A, Colloid Polym. Sci., 261, 64 (1983)

[7] Kim HS, Kim KY, Chung KS, J. Korea Soc Environ. Eng., 8, 61 (1986)

[8] Joo DJ, Kim H, J. Korean Ind. Eng. Chem., 6(1), 140 (1995)

[9] Shinoda K, "Colloidal Surfactants," 112, Academic Press, NY (1963)

[10] Langmuir I, J. Am. Chem. Soc., 40, 1316 (1918)

[11] J. AWWA, AWWA Research Foundation Report, 68, 46 (1976)

[12] Kim HS, Joo DJ, in preparation