Surface Properties of Magnesium-iron Hydrotalcite and Its Modified Products by Inverse Gas Chromatography

doi:10.15541/jim20150059

Abstract

Abstract:

The magnesium-iron hydrotalcite was modified by three nonionic surfactants (Span-20, Tween-80, Triton X-100) combined with sodium dodecyl benzene sulfonate (SDBS), respectively, and surface characterizations of modified hydrotalcites were investigated using inverse gas chromatography (IGC). The free energy of adsorption (-ΔG⁰), dispersive component of the surface energy (γ_s^d) and acid-basic action free energy (-ΔG^sp) were determined to explore the changes between MgFe-LDHs and modified hydrotalcites. The results show that the -ΔG⁰ of the modified hydrotalcites are lower than that of MgFe-LDHs, among which the -ΔG⁰of the SDBS/Triton-LDHs is the lowest, indicating the best stability. The alkalinity of modifed hydrotalcites is weakened and the alkalinity of SDBS/Triton-LDHs is the weakest. In addition, the γ_s^d decreases with temperature increase. Therefore, the compatibility with polymer can be improved by increasing the temperature in preparation of polymer/hydrotalcite materials.

Key words: anionic-nonionic surfactant, hydrotalcite, inverse gas chromatography, surface characterization

CLC Number:

O614

XU Jin-Fang, SHAO Meng-Meng, NI Zhe-Ming, XIAO Xue-Chun. Surface Properties of Magnesium-iron Hydrotalcite and Its Modified Products by Inverse Gas Chromatography[J]. Journal of Inorganic Materials, 2015, 30(9): 971-976.

Figures/Tables 6

References 25

[1]	TSUJIMURA A, UCHIDA M, OKUWAKI A.Synthesis and sulfate ion-exchange properties of a hydrotalcite-like compound intercalated by chloride ions.Journal of Hazardous Materials, 2007, 143(1/2): 582-586.
[2]	NOVILLO C, GUAYA D, AVENDANO A A P, et al. Evaluation of phosphate removal capacity of Mg/Al layered double hydroxides from aqueous solutions.Fuel, 2014, 138: 72-79.
[3]	TAN L C, WANG Y L, LIU Q, et al.Enhanced adsorption of uranium (VI) using a three-dimensional layered double hydroxide/ graphene hybrid material.Chemical Engineering Journal, 2015, 259: 752-760.
[4]	FAN G L, LI F, EVANS D G, et al.Catalytic applications of layered double hydroxides: recent advances and perspectives. Chemical Society Reviews, 2014, 43(20): 7040-7066.
[5]	肖进新, 赵振果. 表面活性剂应用原理. 北京: 化学工业出版社, 2003: 49-51.
[6]	LI Y, HE X J, CAO X L, et al.Molecular behavior and synergistic effects between sodium dodecylbenzene sulfonate and Triton X-100 at oil/water interface.Journal of Colloid and Interface Science, 2007, 307(1): 215-220.
[7]	ZHANG Y X, LONG Y Y, ZHANG Y C, et al.Effect of a mixed anionic-nonionic surfactant adsorption on bentonite structure and on distribution of pentachlorophenol.Applied Clay Science, 2012, 69: 93-98.
[8]	XU JIN-FANG, SHI WEI, NI ZHE-MING, et al.Surface characteriization for anionic-nonionic surfactant modified layered double hydroxides.Chinese Journal of Inorganic Chemistry, 2014, 30(5): 977-983.
[9]	PAPADOPOULOU S K, PANAYIOTOU C.Thermodynamic characterization of poly(1,1,1,3,3,3-hexafluorois opropyl methacry- late) by inverse gas chromatography.Journal of Chromatography A, 2012, 1229: 230-236.
[10]	CORDEIRO N, ORNELAS M, ASHORI A, et al.Investigation on the surface properties of chemically modified natural fibers using inverse gas chromatography.Carbohydrate Polymers, 2012, 87(4): 2367-2375.
[11]	MOISE J C, MUTELET F, JAUBERT J N, et al.Activity coefficients at infinite dilution of organic compounds in four new imidazolium-based lonic liquids. Journal of Chemical and Engineering Data, 2011, 56(7): 3106-3114.
[12]	KARAKEHYA N, BILGIC C.Surface characterisation of montmorillonite/PVC nanocomposites by inverse gas chromatogra-phy.International Journal of Adhesion and Adhesives, 2014, 51: 140-147.
[13]	WEI M, XU X Y, HE J, et al.Preparation and thermal decomposition studies of L-tyrosine intercalated MgAl, NiAl and ZnAl layered double hydroxides.Journal of Physics and Chemistry of Solids, 2006, 67(7): 1469-1476.
[14]	RUCKRIEM M, INAYAT A, ENKE D, et al.Inverse gas chromatography for determining the dispersive surface energy of porous silica.Colloids and Surfaces A-Physicochemical and Engineering Aspects, 2010, 357(1/2/3): 21-26.
[15]	FU XIAO-WEI, NI ZHE-MING, LIU JIAO.Surface characterization of copper-aluminum-magnesium hydrotalcites investigated by inverse gas chromatography.Acta Chimica Sinica, 2012, 79(8): 968-972.
[16]	WANG W J, HUA Q, SHA Y F, et al.Surface properties of solid materials measured by modified inverse gas chromatography.Talanta, 2013,112: 69-72.
[17]	YANG CHUN-SHENG, CUI XIAO-HONG, JIANG YAN, et al.Mixed micelles of sodium dodecyl sulfate and triton X-100 in aqueous solution studied by 1H NMR.Chinese Journal of Magnetic Resonance, 2009, 26(4): 466-475.
[18]	LIU JIN-YAN, HAN WAI-HUI, ZHANG YAN, et al.Studies on the conductivity of mixed reverse micelles of anionic and non-ionic surfactanta.Acta Physico-Chimica Sinica, 2010, 26(6): 1552-1556.
[19]	XU SHENG, ZENG HONG-YAN, ZHAO CE, et al.Surface modification of Mg-Al hydrotalcite flame-retardant.Journal of The Chinese Ceramic Society, 2013, 41(4): 527-533.
[20]	Hernandez M, Fenandez L, Borras C, et al.Characterization of surfactant/hydrotalcite-like clay/glassy carbon modified electrodes: oxidation of phenol.Analytica Chimica Acta, 2007, 597: 245-256.
[21]	LI HAI-CHAO, LIU JIN-YAN, ZHANG YING-CHUN, et al.Interaction of sodium dodecyl benzene sulfonate and Triton X-100 studied by intrinsiic fluorescence.Chinese Journal of Applied Chemistry, 2011, 28(1): 113-117.
[22]	DEB N, SHANNIGRAHI M, BAGCHI S.Use of fluorescence probes for studying kamlet-taft solvatochromic parametes of micellar system formed by binary mixture of sodium dodecyl sulfate and Triton-X 100.Journal of Physical Chemistry B, 2008, 112(10): 2868-2873.
[23]	VOELKEL A, STRZEMIECKA B, ADAMSKA K, et al.Inverse gas chromatography as a source of physiochemical data.Journal of Chromatography A, 2009, 1216(10): 1551-1566.
[24]	QU XIAO-HONG, MA XIAO-YAN, CHEN FANG, et al.Correlation of the structure of clay filled polyurethane with surface properties.Acta Materiae Compositae sinica, 2007, 3(24): 13-17.
[25]	MA X Y, QU X H, ZHANG Q L, et al.Analysis of interfacial action of rectorite/thermoplastic polyurethane nanocomposites by inverse gas chromatography and molecular simulation.Polymer, 2008, 49: 3590-3600.

System	-ΔG⁰ / (kJ·mol^-1)
System	n-pentane	n-hexane	n-heptane	n-octane
MgFe-LDHs	15.23	14.38	14.24	13.06
SDBS/Span-LDHs	12.89	9.68	7.15	5.67
SDBS/Tween-LDHs	12.01	8.93	6.46	4.61
SDBS/Triton-LDHs	11.82	8.43	5.94	4.31

System	-ΔG⁰ / (kJ·mol^-1)
System	n-pentane	n-hexane	n-heptane	n-octane
MgFe-LDHs	15.23	14.38	14.24	13.06
SDBS/Span-LDHs	12.89	9.68	7.15	5.67
SDBS/Tween-LDHs	12.01	8.93	6.46	4.61
SDBS/Triton-LDHs	11.82	8.43	5.94	4.31

System	γ_s^d/(mJ·m^-2)
System	130 ℃	140 ℃	150 ℃	160 ℃
MgFe-LDHs	195.00	177.55	158.81	158.13
SDBS/Span-LDHs	34.50	32.93	31.87	30.58
SDBS/Tween-LDHs	33.67	31.58	29.68	28.14
SDBS/Triton-LDHs	31.02	30.99	28.13	27.27

System	γ_s^d/(mJ·m^-2)
System	130 ℃	140 ℃	150 ℃	160 ℃
MgFe-LDHs	195.00	177.55	158.81	158.13
SDBS/Span-LDHs	34.50	32.93	31.87	30.58
SDBS/Tween-LDHs	33.67	31.58	29.68	28.14
SDBS/Triton-LDHs	31.02	30.99	28.13	27.27

System	-ΔG^sp/(kJ·mol^-1)
System	CCl₄	CH₂Cl₂	C₆H₆
MgFe-LDHs	-1.14	2.44	3.37
SDBS/Span-LDHs	0.81	1.95	5.82
SDBS/Tween-LDHs	0.47	1.75	3.74
SDBS/Triton-LDHs	0.32	1.35	1.59