High-strength biocompatible hydrogels based on poly(acrylamide) and cellulose: Synthesis, mechanical properties and perspectives for use as artificial cartilage

Buyanov, A. L.; Gofman, I. V.; Хрипунов, А. К.; Ткаченко, А. С.; Ushakova, E. E.

doi:10.1134/s0965545x13050027

Cited by 30 publications

(19 citation statements)

References 19 publications

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“…This information is evidently necessary to determine the limit levels of the loads and deformations that these materials can withstand without the substantial depression of their principal functional properties. The cyclic stress-strain curves obtained are characterized by a well-defined hysteresis that is inherent for the cyclic deformation of both the cartilage and of the hydrogels studied, which are very close to the cartilage by their stiffness (Buyanov et al, 2013). A most broad hysteresis is characteristic for the first compression cycle while already in the second and following cycles the substantial depression of the hysteresis area can be seen ( Fig.…”

Section: Resultsmentioning

confidence: 65%

“…Probably, the action of the heavy cyclic loading provoked the rupture of the integrity of the interactions between the physical network of BC and chemical network of PAAm. This effect may result from the deep differences in the stiffness of PAAm and cellulose macro-chains (Buyanov et al, 2013). One can conclude that these processes of the reorganization of the network structure take a substantial time.…”

Section: Resultsmentioning

confidence: 99%

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High-strength cellulose–polyacrylamide hydrogels: Mechanical behavior and structure depending on the type of cellulose

Buyanov

Gofman

Сапрыкина

2019

Journal of the Mechanical Behavior of Biomedical Materials

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Two types of high-strength composite hydrogels possessing the structure of interpenetrating polymer networks were synthesized via free-radical polymerization of acrylamide carried out straight within the matrix of plant or bacterial cellulose swollen in the reactive solution. The mechanical behavior of synthesized hydrogels subjected to the action of compressive deformations with different amplitude values was studied. The analysis of the stress-strain curves of compression tests of the hydrogels of both types obtained in different test conditions demonstrates the substantial difference in their mechanical behavior. Both the plant cellulose-based and bacterial cellulose-based hydrogels withstand successfully the compression with the amplitude up to 80 %, but the bacterial cellulose-based compositions demonstrate in the multiple compression tests the substantial decrease of the mechanical stiffness caused by the action of compressions. This effect takes place straightly during the multiple cyclic compression tests or in the course of relaxation of previously compressed samples in water in unloaded state during 2-3 days after the first compressive tests. Being subjected to the action of the extremely sever compression (up to 80 %) the bacterial cellulose-based hydrogel varies greatly its mechanical behavior: during the subsequent compressions the stiffness of the material keeps extremely small (as compared to that registered in the first compression) up to the deformations as high as 50-60 % with the dramatic increase of the stiffness during the further loading. This unusual effect can be explained by the deep reorganization of the intermolecular structure of the material with the stress-induced reorientation of cellulose micro-fibrils, fragmentation and disintegration of the interpenetrating networks structure with the breaking of the covalent bonds in the matrix polymer. Submicron-and micron-scale specific features of structures of composite hydrogels of both types were studied by cryo-scanning electron microscopy to explain the peculiarities of observed mechanical effects.

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Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 99%

High-strength cellulose–polyacrylamide hydrogels: Mechanical behavior and structure depending on the type of cellulose

Buyanov

Gofman

Сапрыкина

2019

Journal of the Mechanical Behavior of Biomedical Materials

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“…Fibre-on-fibre frictional slippage could lead to an irreversible process of energy loss [12,13]. In compressive behaviour, the cellulose content was the main factor defining stiffness of the material [21]. Frensemeier et al [18] also reported that a release of water was a critical deformation mechanism in compressive behaviour, regarding it as the main event to cause plastic deformation.…”

Section: Introductionmentioning

confidence: 99%

Inelastic behaviour of bacterial cellulose hydrogel: In aqua cyclic tests

et al. 2015

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Citation: GAO, X. et al., 2015. Inelastic behaviour of bacterial cellulose hydrogel: in aqua cyclic tests. Polymer Testing, 44, Additional Information:• This paper was accepted for publication in the journal Poly- AbstractHydrogels are finding an increasingly broad use, especially in biomedical applications. Their complex structure -a low-density network of microfibrils -defines their non-trivial mechanical behaviour. The focus of this work is on test-based quantification of mechanical behaviour of a bacterial cellulose (BC) hydrogel exposed to cyclic loading. Specimens for the tests were produced using Gluconacetobacter xylinus ATCC 53582 and tested in aqua under uniaxial cyclic loading conditions in a displacement-controlled regime. Substantial microstructural changes were observed in the process of deformation. A combination of qualitative microstructural observations with quantitative force-displacement relations allowed identification of main deformation mechanisms, confirming inelastic behaviour of BC hydrogel under a loading-unloading-reloading regime. Elastic deformation was accompanied by non-elastic (viscoplastic) deformation in both tension and compression. This study also aims to establish a background for micromechanical modelling of overall properties of BC hydrogels.

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“…In recent years, the investigation of cellulose has grown drastically for alcohol production, removal of toxic and heavy metal ions, catalyst, and as packaging material . Furthermore, there is plentiful investigation about the incorporation of cellulose into polymeric matrices to improve the mechanical strength and toughness of hydrogels such as double network hydrogel systems prepared with bacterial cellulose, or other preparation methods using different cellulose as a part composites of hydrogels . Most of these studies demonstrated that the mechanical strength and toughness of hydrogels increased upon incorporation of various cellulose types within hydrogel matrix with different ways.…”

Section: Introductionmentioning

confidence: 99%

Improved mechanical strength of p(AAm) interpenetrating hydrogel network due to microgranular cellulose embedding

Şahiner

Demirci

2017

J of Applied Polymer Sci

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Here, polyacrylamide [p(AAm)]-based hydrogels were synthesized via redox polymerization technique in the presence of various amounts of microgranular cellulose (MGCell) such as 0, 10, 25, 50, 100, and 150 mg MGCell/g. The synthesized p(AAm)-MGCell interpenetrating hydrogels were characterized spectroscopically by FTIR, thermally by TGA analysis, and mechanically via dynamic mechanical measurements. Furthermore, the effect of the amount of MGCell in p(AAm) hydrogels on swelling% (S%) degree and mechanical strength was investigated. It was found that the S% was decreased from 727 6 9 to 667 6 6, 642 6 8 and 619 6 10, 568 6 6 for p(AAm)-MGCell interpenetrating network hydrogels containing 10, 50, 100, and 150 mg MGCell, respectively. On the other hand, the Young modulus of p(AAm)-based hydrogels increased from 2.8 6 0.2 kPa to 3.1 6 0.03, 3.4 6 0.1, 3.6 6 0.3 and 4.3 6 0.3 kPa with the incorporation of 10, 50, 100, and 150 mg MGCell into p(AAm) hydrogels. V C 2017 Wiley Periodicals, Inc. J.Appl. Polym. Sci. 2017, 134, 44854.

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High-strength biocompatible hydrogels based on poly(acrylamide) and cellulose: Synthesis, mechanical properties and perspectives for use as artificial cartilage

Cited by 30 publications

References 19 publications

High-strength cellulose–polyacrylamide hydrogels: Mechanical behavior and structure depending on the type of cellulose

High-strength cellulose–polyacrylamide hydrogels: Mechanical behavior and structure depending on the type of cellulose

Inelastic behaviour of bacterial cellulose hydrogel: In aqua cyclic tests

Improved mechanical strength of p(AAm) interpenetrating hydrogel network due to microgranular cellulose embedding

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