Poly(acrylamide) microgel-reinforced poly(acrylamide)/hectorite nanocomposite hydrogels

Du, Zhengshan; Hu, Yang; Gu, Xiaoyu; Meng, Hu; Wang, Chaoyang

doi:10.1016/j.colsurfa.2015.09.039

Cited by 24 publications

(10 citation statements)

References 44 publications

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“…A wide variety of fabrication techniques (e.g., suspension and emulsion polymerizations, [23,42,43] precipitation polymerization, [44] microfluidics, [45,46] electrospraying [47,48] ) also exist for processing polymers into microgels ( Figure 2C). The microgel chemistry is typically selected for ease of fabrication, functionalization, and compatibility with the fabrication process.…”

Section: Fabrication Techniquesmentioning

confidence: 99%

Designing Microgels for Cell Culture and Controlled Assembly of Tissue Microenvironments

Caldwell

Aguado

2019

Adv Funct Materials

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Micrometer‐sized hydrogels, termed microgels, are emerging as multifunctional platforms that can recapitulate tissue heterogeneity in engineered cell microenvironments. The microgels can function as either individual cell culture units or can be assembled into larger scaffolds. In this manner, individual microgels can be customized for single or multicell coculture applications, or heterogeneous populations can be used as building blocks to create microporous assembled scaffolds that more closely mimic tissue heterogeneities. The inherent versatility of these materials allows user‐defined control of the microenvironments, from the order of singly encapsulated cells to entire 3D cell scaffolds. These hydrogel scaffolds are promising for moving towards personalized medicine approaches and recapitulating the multifaceted microenvironments that exist in vivo.

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Section: Fabrication Techniquesmentioning

confidence: 99%

Designing Microgels for Cell Culture and Controlled Assembly of Tissue Microenvironments

Caldwell

Aguado

2019

Adv Funct Materials

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“…In oppositely charged polymer/surfactant systems, surfactant molecules with opposite charge can adsorb strongly onto the polyelectrolyte chain to form insoluble complexes in water [1][2][3][4][5][6]. Electrostatic factors, including micelle surface charge density, polymer linear charge density, and ionic strength play a dominant role in complex formation between oppositely charged polyelectrolyte and surfactant [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Association Behaviors of Sodium Dodecyl Sulfate (SDS) with Poly(4‐vinylpyridine N‐oxide) (PVPNO) at Different pH Values and Ionic Strengths

Wang

Fan

Wang

2017

J Surfact & Detergents

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The interaction of sodium dodecyl sulfate (SDS) with poly(4-vinylpyridine N-oxide) (PVPNO) at different pH values and ionic strengths has been studied by isothermal titration microcalorimetry, electrical conductivity and turbidity measurements. The solution pH significantly effects the formation of the PVPNO/SDS complex. At pH 1.5, the polymer PVPNO is a strong polycation, and the binding is dominated by electrostatic 1:1 charge neutralization with the anionic surfactant. At pH 6 and 8, the electrostatic attraction between SDS and PVPNO is weak, and the hydrophobic interaction becomes stronger. The effect of salt concentration on the interaction of SDS and PVPNO depends on the competition between the increase of interaction and the screening of interaction. This study based on the thermodynamic process gained deep insight into the effects of pH value and ionic strength on the interaction mechanism of surfactant with polyelectrolyte. We also constructed a simple model for the interaction of PVPNO and SDS system in different solution regions.

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“…Hydrogels, as a kind of soft‐wet material that composed of a large amount of water and 3D networks of polymer chains, have been widely applied to various biomedical areas, such as tissue engineering scaffolds, drug carriers, and drug release, vehicles, scaffolds for cell cultures, biosensors, and wound dressings . In particular, polyvinyl alcohol (PVA) hydrogel has been widely studied and well demonstrated to be an ideal biomaterial due to its excellent mechanical properties, biocompatibility, and low water absorption abilities .…”

Section: Introductionmentioning

confidence: 99%

PVA/Carbon Dot Nanocomposite Hydrogels for Simple Introduction of Ag Nanoparticles with Enhanced Antibacterial Activity

Meng

et al. 2016

Macro Materials & Eng

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The introduction of nanomaterials to hydrogels is an effective way to improve the mechanical properties of hydrogels. Herein, carbon nanodot (C‐dot) as a new‐found excellent nanomaterial is first added to polyvinyl alcohol (PVA) hydrogel to prepare PVA/C‐dot hydrogel by freeze–thaw method. The appropriate size and plenty of surface functional groups make C‐dot an ideal nucleating agent for PVA crystallization, which leads to form a denser and more uniform cross‐linked network in PVA hydrogel, and in turn enhance the mechanical properties of PVA hydrogel. Compared to pure PVA hydrogel, about a 46.4% increase of tensile strength and 18.5% increase of elongation at break are achieved when the content of C‐dot in PVA/C‐dot hydrogel is 2 wt%, suggesting that C‐dot can effectively improve the mechanical properties of PVA hydrogel. Besides, C‐dot can endow PVA hydrogel with some new properties, such as fluorescence and reducibility. Herein, Ag nanoparticles are simply introduced and uniformly dispersed in PVA hydrogels with the help of reducibility of C‐dot, which can greatly enhance the antibacterial activity of PVA/C‐dot hydrogels, and enlarge their application potential in medical field.

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Poly(acrylamide) microgel-reinforced poly(acrylamide)/hectorite nanocomposite hydrogels

Cited by 24 publications

References 44 publications

Designing Microgels for Cell Culture and Controlled Assembly of Tissue Microenvironments

Designing Microgels for Cell Culture and Controlled Assembly of Tissue Microenvironments

Thermodynamic Association Behaviors of Sodium Dodecyl Sulfate (SDS) with Poly(4‐vinylpyridine N‐oxide) (PVPNO) at Different pH Values and Ionic Strengths

PVA/Carbon Dot Nanocomposite Hydrogels for Simple Introduction of Ag Nanoparticles with Enhanced Antibacterial Activity

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