vestnik-bio-msuВестник Московского университета. Серия 16. БиологияVestnik Moskovskogo universiteta. Seriya 16. Biologiya0137-0952Lomonosov Moscow State University, School of Biology10.55959/MSU0137-0952-16-78-3S-11vestnik-bio-msu-1275Research ArticleКРАТКИЕ СООБЩЕНИЯSHORT COMMUNICATIONSРеологические свойства полисахаридных гидрогелей альгината с малыми добавками нанотрубок галлуазита для экструзионной 3D-печатиRheological behavior of polysaccharide hydrogels of alginate reinforced by small amount of halloysite nanotubes for extrusion 3D printinghttps://orcid.org/0000-0002-2846-0784МолчановВ. С.MolchanovV. S.

Молчанов Вячеслав Сергеевич – канд. физ.-мат. наук, ст. науч. сотр. кафедры физики полимеров и кристаллов физического факультета

г. Москва, 119991, Ленинские горы, д. 1, стр. 2

Тел.: 8-495-939-14-64

Department of Polymers and Crystals Physics, Faculty of Physics

1–2 Leninskie Gory, 119991, Moscow

molchan@polly.phys.msu.ruГлуховаС. А.GlukhovS. A.

Глухова Светлана Анатольевна – аспирантка кафедры физики полимеров и кристаллов физического факультета

г. Москва, 119991, Ленинские горы, д. 1, стр. 2

Тел.: 8-495-939-14-64

Department of Polymers and Crystals Physics, Faculty of Physics

1–2 Leninskie Gory, 119991, Moscow

glukhova@polly.phys.msu.ruhttps://orcid.org/0000-0002-1098-0255ФилипповаО. Е.PhilippovaO. E.

Филиппова Ольга Евгеньевна – докт. физ.-мат. наук, проф. кафедры физики полимеров и кристаллов физического факультета

г. Москва, 119991, Ленинские горы, д. 1, стр. 2

Тел.: 8-495-939-14-64

Department of Polymers and Crystals Physics, Faculty of Physics

1–2 Leninskie Gory, 119991, Moscow

phil@polly.phys.msu.ruМосковский государственный университет имени М.В. ЛомоносоваРоссияLomonosov Moscow State UniversityRussian Federation202301122023783S6368Copyright © Молчанов В.С., Глухова С.А., Филиппова О.Е., 20232023Молчанов В.С., Глухова С.А., Филиппова О.Е.Molchanov V.S., Glukhov S.A., Philippova O.E.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestnik-bio-msu.elpub.ru/jour/article/view/1275

Исследованы реологические свойства гидрогелей природного полисахарида альгината натрия при наполнении матрицы нанотрубками глины галлуазита в малых концентрациях. Выявлены изменения реологических свойств при переходе от полуразбавленного раствора полимера к гидрогелю при сшивании ионами кальция. В состоянии геля образцы обладают пределом текучести, и их вязкость при течении падает при увеличении скорости сдвига, но реологические свойства достаточно быстро восстанавливаются после снятия нагрузки. Обнаружено, что добавление до 0,3 об.% нанотрубок природной глины галлуазита приводит к увеличению модуля упругости и предела текучести гидрогеля в несколько раз, но при этом сохраняются практически важные свойства псевдопластичности и быстрого восстановления свойств после снятия нагрузки, что делает нанокомпозитные гидрогели альгината и нанотрубок галлуазита перспективными для применения в качестве чернил для экструзионной 3D-печати.

The rheological properties of hydrogels of a natural polysaccharide sodium alginate and small amount of clay nanotubes of halloysite were investigated. Changes of rheological properties during the transition from a semi-dilute polymer solution to a hydrogel upon cross-linking by calcium ions were shown. In the gel state, the samples have a yield stress, and their viscosity decreases with the shear rate, but the properties are quickly recovered after the load removal. It was obtained that the addition of up to 0.3 vol.% nanotubes of natural clay halloysite leads to an increase by several times of a storage modulus and an yield stress of the hydrogels. At the same time, the practically important properties of shear thinning and the rapid recovery of properties after the load removing make the nanocomposite hydrogels of alginate and halloysite nanotubes promising for use as ink for extrusion 3D printing.

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The authors declare that there are no conflicts of interest present.