vestichИзвестия Национальной академии наук Беларуси. Серия химических наукProceedings of the National Academy of Sciences of Belarus, Chemical Series1561-83312524-2342The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8331-2020-56-4-419-428vestich-613Research ArticleКОЛЛОИДНАЯ ХИМИЯCOLLOIDAL CHEMISTRYЭлектрокинетические свойства гелей фосфатов кальцияElectrokinetic properties of colloid calcium phosphateГлазовИ. Е.GlazovI. E.

Глазов Илья Евгеньевич - младший научный сотрудник.

Ул. Сурганова, 9/1, 220072, Минск

Ilya E. Glazov - Junior Researcher.

9/1, Surganov Str., 220072, Minsk

che.glazov@mail.ruМалаховскийП. О.MalakhovskyP. O.

Малаховский Павел Олегович - младший научный сотрудник.

Ул. Ленинградская, 14, 220006, Минск

Pavel O. Malakhovsky - Junior Researcher.

14, Leningradskaya Str., 220006

pashkamusic@gmail.comКрутькоВ. К.Krut’koV. K.

Крутько Валентина Константиновна - кандидат химических наук, доцент, заведующий лабораторией.

Ул. Сурганова, 9/1, 220072, Минск

Valentina K. Krut’ ko - Ph. D. (Chemistry), Associate Professor, Head of the Laboratory.

9/1, Surganov Str., 220072, Minsk

tsuber@igic.bas-net.byМусскаяО. Н.MusskayaO. N.

Мусская Ольга Николаевна - кандидат химических наук, доцент, старший научный сотрудник.

Ул. Сурганова, 9/1, 220072, Минск

Olga N. Musskaya - Ph. D. (Chemistry), Associate Professor, Senior Researcher.

9/1, Surganova Str., 220072, Minsk

musskaja@igic.bas-net.byКулакА. И.KulakA. I.

Кулак Анатолий Иосифович - член-корреспондент, доктор химических наук, профессор, директор.

Ул. Сурганова, 9/1, 220072, Минск

Anatoly I. Kulak - Corresponding Member of the National Academy of Sciences of Belarus, D. Sc. (Chemistry), Professor, Director.

9/1, Surganov Str., 220072, Minsk

kulak@igic.bas-net.byИнститут общей и неорганической химии, Национальная академия наук БеларусиInstitute of General and Inorganic Chemistry, National Academy of Sciences of BelarusНаучно-исследовательский институт физико-химических проблем, Белорусский государственный университетResearch Institute for Physical Chemical Problems, Belarusian State University202004122020564419428Copyright © Глазов И.Е., Малаховский П.О., Крутько В.К., Мусская О.Н., Кулак А.И., 20202020Глазов И.Е., Малаховский П.О., Крутько В.К., Мусская О.Н., Кулак А.И.Glazov I.E., Malakhovsky P.O., Krut’ko V.K., Musskaya O.N., Kulak A.I.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestichem.belnauka.by/jour/article/view/613

Электрокинетические свойства гелей фосфатов кальция - дикальцийфосфата дигидрата (брушит), трикальцийфосфата, гидроксиапатита - определяли в различных средах. Диапазон полученных значений ζ -потенциалов от -29 до +21 мВ указывает на способность частиц фосфатов кальция к адсорбции как катионов (Mg2+, Ca2+), так и анионов (OH-, NO3-, CO32-, HPO42-). Значения ζ —потенциалов дикальцийфосфата дигидрата смещены в положительную область на 2-9 мВ относительно таковых для гидроксиапатита, а ζ —потенциалы трикальцийфосфата и гидроксиапатита отличаются незначительно на 1-3 мВ вследствие их апатитовой природы. В процессе созревания гидроксиапатита абсолютные значения ζ —потенциалов частиц увеличиваются от +6 до +22 мВ либо от -19 до -27 мВ, что обусловлено уменьшением содержания Ca2+ в маточном растворе, а не увеличением соотношения Ca/P дисперсной фазы. Согласно полученным данным, электрокинетические свойства частиц фосфатов кальция в большей степени определяются их кристаллической структурой, и в меньшей - Ca/P соотношением.

Electrokinetic properties of colloid calcium phosphates, i. e. dicalcium phosphate dihydrate (brushite), tricalcium phosphate, hydroxyapatite, have been determined in different media. Obtained Z-values ranging from -29 to +21 mV indicate the ability of calcium phosphate particles to adsorb both cations (Mg2+, Ca2+) and anions (OH-, NO3-, CO32-, HPO42). Dicalcium phosphate dihydrate ζ -potential values are positively shifted by 2-9 mV as compared to that of hydroxyapatite, and ζ -potentials of tricalcium phosphate and hydroxyapatite differ slightly by 1-3 mV owing to its apatitic nature. During the maturation of hydroxyapatite, its absolute Z-potential values are gradually increased from +6 to +22 mV and from -19 до -27 mV due to the lowering of Ca2+ content in mother solution rather than an increase of Ca/P molar ratio of dispersed phase. According to the data obtained, the electrokinetic properties of calcium phosphate particles are rather determined by their crystal structure than by Ca/P molar ratio.

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