alginate hydrogels
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2022 ◽  
Vol 23 ◽  
pp. 100656
Author(s):  
M. Mathew ◽  
M.A. Rad ◽  
J.P. Mata ◽  
H. Mahmodi ◽  
I.V. Kabakova ◽  
...  

2022 ◽  
Author(s):  
Daniel Massana Roquero ◽  
Ali Othman ◽  
Artem Melman ◽  
Evgeny Katz

Ionotropic alginate hydrogels are versatile materials for a wide range of applications. Their biocompatibility and biodegradability have made them perfect candidates for biomedical applications such as tissue engineering and drug...


2022 ◽  
pp. 107500
Author(s):  
Mustapha El Hariri ElNokab ◽  
Alessia Lasorsa ◽  
Khaled O. Sebakhy ◽  
Francesco Picchioni ◽  
Patrick C.A. van der Wel

2021 ◽  
pp. 088391152110539
Author(s):  
Fei Xie ◽  
Changyue Li ◽  
Xiaoqing Hua ◽  
Li Ma

Bipolar electrochemistry successfully realized the electrodeposition of calcium alginate hydrogels in specific target areas in tissue engineering. However, the shape and quantity of three-dimensional cannot be accurately controlled. We presented a novel growth model for fabricating hydrogels based on bipolar electrochemical by patterned bipolar electrodes using photolithography. This work highlights pattern customization and quantitative control of hydrogels in cell culture platforms. Furthermore, alginate hydrogels with different heights can be controlled by adjusting the key parameters of the growth model. This strategy exhibits promising potential for cell-oriented scaffolds in tissue engineering.


Gels ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 164
Author(s):  
Chen-Kang Chen ◽  
Po-Wen Chen ◽  
Huan-Jung Wang ◽  
Mei-Yu Yeh

Conductive hydrogels with stretchable, flexible and wearable properties have made significant contributions in the area of modern electronics. The polyacrylamide/alginate hydrogels are one of the potential emerging materials for application in a diverse range of fields because of their high stretch and toughness. However, most researchers focus on the investigation of their mechanical and swelling behaviors, and the adhesion and effects of the ionic liquids on the conductivities of polyacrylamide/alginate hydrogels are much less explored. Herein, methacrylated lysine and different alkyl chain substituted imidazole-based monomers (IMCx, x = 2, 4, 6 and 8) were introduced to prepare a series of novel pAMAL-IMCx-Ca hydrogels. We systematically investigated their macroscopic and microscopic properties through tensile tests, electrochemical impedance spectra and scanning electron microscopy, as well as Fourier transform infrared spectroscopy, and demonstrated that an alkyl chain length of the IMCx plays an important role in the designing of hydrogel strain sensors. The experiment result shows that the hexyl chains of IMC6 can effectively entangle with LysMA through hydrophobic and electrostatic interactions, which significantly enhance the mechanical strength of the hydrogels. Furthermore, the different strain rates and the durability of the pAMAL-IMC6-Ca hydrogel were investigated and the relative resistance responses remain almost the same in both conditions, making it a potential candidate for wearable strain sensors.


ACS Omega ◽  
2021 ◽  
Vol 6 (40) ◽  
pp. 25964-25971
Author(s):  
Amirmohammad Sattari ◽  
Sajjad Janfaza ◽  
Mohsen Mashhadi Keshtiban ◽  
Nishat Tasnim ◽  
Pedram Hanafizadeh ◽  
...  
Keyword(s):  

Author(s):  
Fenyan Miao ◽  
Tingting Liu ◽  
Xiumei Zhang ◽  
Xuefeng Wang ◽  
Yan Wei ◽  
...  

Pharmaceutics ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1473
Author(s):  
Ahmed Raslan ◽  
Jesús Ciriza ◽  
Ana María Ochoa de Retana ◽  
María Luisa Sanjuán ◽  
Muhammet S. Toprak ◽  
...  

Modifying hydrogels in order to enhance their conductivity is an exciting field with applications in cardio and neuro-regenerative medicine. Therefore, we have designed hybrid alginate hydrogels containing uncoated and protein-coated reduced graphene oxide (rGO). We specifically studied the adsorption of three different proteins, BSA, elastin, and collagen, and the outcomes when these protein-coated rGO nanocomposites are embedded within the hydrogels. Our results demonstrate that BSA, elastin, and collagen are adsorbed onto the rGO surface, through a non-spontaneous phenomenon that fits Langmuir and pseudo-second-order adsorption models. Protein-coated rGOs are able to preclude further adsorption of erythropoietin, but not insulin. Collagen showed better adsorption capacity than BSA and elastin due to its hydrophobic nature, although requiring more energy. Moreover, collagen-coated rGO hybrid alginate hydrogels showed an enhancement in conductivity, showing that it could be a promising conductive scaffold for regenerative medicine.


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