Effect of graphene-derivatives on the responsivity of PNIPAM-based thermosensitive nanocomposites – A review

Czakkel, Orsolya; Berke, Barbara; László, Krisztina

doi:10.1016/j.eurpolymj.2019.04.004

Cited by 25 publications

(15 citation statements)

References 144 publications

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“…These nanocomposite hydrogels have a higher degree of chemical or physical complexity and the polymers and nanoparticles can work synergistically to assure tailored characteristics and functionality [60]. Currently many inorganic and organic NPs such as gold NPs [6,60,61], silver NPs [62], carbon nanotubes [63,64], graphene oxide (GO) nanosheets [65][66][67][68][69], clays [35,70] and superparamagnetic iron oxide NPs [71] have been incorporated within PNIPAM hydrogels. These NPs can serve as functional nanofillers to modulate the properties of the hydrogels from various aspects.…”

Section: General Strategies For Tuning the Properties Of The Pnipam-bmentioning

confidence: 99%

“…First, they can mechanically reinforce the hydrogel network and tune the elasticity of the hydrogel. For example, two-dimensional GO nanosheets [65,68,[72][73][74] or nano-clays [35,70] have been incorporated within PNIPAM hydrogels, thereby effectively modulating their mechanical properties. In the work of Berke et al [72], GO platelets were incorporated into the PNIPAM network by using chain nucleation, which resulted in a hypernodal structure of the PNIPAM gel ( Figure 1).…”

Section: General Strategies For Tuning the Properties Of The Pnipam-bmentioning

confidence: 99%

“…Moreover, by adjusting the size of the nanofillers as well as their physical/chemical interactions with the polymeric network, the phase transition temperature of the hydrogel and the responsive speed can also be effectively modulated [73,74,76]. Very recently Czakkel et al gave a comprehensive review about the effect of graphenederivatives on the responsivity of PNIPAM-based nanocomposites [65]. Moreover, there are also other strategies that can be used to formulate PNIPAM into double network hydrogels, slide ring hydrogels as well as self-assembled hydrogels, which can effectively modulate the properties of PNIPAM-based hydrogels so as to expand their applications.…”

Section: General Strategies For Tuning the Properties Of The Pnipam-bmentioning

confidence: 99%

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Poly(N-isopropylacrylamide)-Based Thermoresponsive Composite Hydrogels for Biomedical Applications

Liu

Fu³

et al. 2020

Polymers

244

146

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Poly(N-isopropylacrylamide) (PNIPAM)-based thermosensitive hydrogels demonstrate great potential in biomedical applications. However, they have inherent drawbacks such as low mechanical strength, limited drug loading capacity and low biodegradability. Formulating PNIPAM with other functional components to form composited hydrogels is an effective strategy to make up for these deficiencies, which can greatly benefit their practical applications. This review seeks to provide a comprehensive observation about the PNIPAM-based composite hydrogels for biomedical applications so as to guide related research. It covers the general principles from the materials choice to the hybridization strategies as well as the performance improvement by focusing on several application areas including drug delivery, tissue engineering and wound dressing. The most effective strategies include incorporation of functional inorganic nanoparticles or self-assembled structures to give composite hydrogels and linking PNIPAM with other polymer blocks of unique properties to produce copolymeric hydrogels, which can improve the properties of the hydrogels by enhancing the mechanical strength, giving higher biocompatibility and biodegradability, introducing multi-stimuli responsibility, enabling higher drug loading capacity as well as controlled release. These aspects will be of great help for promoting the development of PNIPAM-based composite materials for biomedical applications.

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Section: General Strategies For Tuning the Properties Of The Pnipam-bmentioning

confidence: 99%

Section: General Strategies For Tuning the Properties Of The Pnipam-bmentioning

confidence: 99%

Section: General Strategies For Tuning the Properties Of The Pnipam-bmentioning

confidence: 99%

See 1 more Smart Citation

Poly(N-isopropylacrylamide)-Based Thermoresponsive Composite Hydrogels for Biomedical Applications

Liu

Fu³

et al. 2020

Polymers

244

146

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show abstract

“…Nanocomposite hydrogels have attracted much attention due to their rapid swelling-deswelling response, high swelling ratios, and tunable physical properties [95,96]. Stimuli-responsive hydrogels are widely used in numerous potential applications, e.g., sensor, actuators, transducers, artificial muscles, tissue engineering scaffolds, microfluidics, and drug delivery vector [97][98][99][100][101].…”

Section: Other Processing Techniques 341 Hydrogelsmentioning

confidence: 99%

Smart polymer nanocomposites: A review

Chow¹,

Ishak²

2020

Express Polym. Lett.

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The development of smart polymer nanocomposites (SPN) has been an area of high scientific and industrial interest in recent years, due to fantastic improvements achieved in these materials. SPN found potential applications in shape memory, self-healing, self-sensing, self-heating, self-cleaning, and energy harvesting. This mini-review highlights the current research and development on SPN, specifically on shape memory polymer (SMP) and self-healing polymer (SHP) nanocomposites. The processing techniques for SPN nanocomposites, for example, polymerization, melt-compounding, solution mixing, electrospinning, and thermoset-curing are discussed. Some of the potential strategies to modify the properties of SMP and SHP nanocomposites are highlighted. The future perspective and recommended works for the SPN nanocomposites are shared in this mini-review.

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“…Polymer based thin films have been used extensively for several decades in a varied range of applications from optical coatings and energy storage to smart appliances, semiconductors and pharmaceutics [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Further inclusion of nanoparticles or adhesion to complex interfaces allows efficient control, tuning, and magnification of the already exceptional base macromolecular properties.…”

Section: Introductionmentioning

confidence: 99%

Self-Avoiding Random Walks as a Model to Study Athermal Linear Polymers under Extreme Plate Confinement

et al. 2020

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Monte Carlo (MC) simulations, built around chain-connectivity-altering moves and a wall-displacement algorithm, allow us to simulate freely-jointed chains of tangent hard spheres of uniform size under extreme confinement. The latter is realized through the presence of two impenetrable, flat, and parallel plates. Extreme conditions correspond to the case where the distance between the plates approaches the monomer size. An analysis of the local structure, based on the characteristic crystallographic element (CCE) norm, detects crystal nucleation and growth at packing densities well below the ones observed in bulk analogs. In a second step, we map the confined polymer chains into self-avoiding random walks (SAWs) on restricted lattices. We study all realizations of the cubic crystal system: simple, body centered, and face centered cubic crystals. For a given chain size (SAW length), lattice type, origin of SAW, and level of confinement, we enumerate all possible SAWs (equivalently all chain conformations) and calculate the size distribution. Results for intermediate SAW lengths are used to predict the behavior of long, fully entangled chains through growth formulas. The SAW analysis will allow us to determine the corresponding configurational entropy, as it is the driving force for the observed phase transition and the determining factor for the thermodynamic stability of the corresponding crystal morphologies.

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Effect of graphene-derivatives on the responsivity of PNIPAM-based thermosensitive nanocomposites – A review

Cited by 25 publications

References 144 publications

Poly(N-isopropylacrylamide)-Based Thermoresponsive Composite Hydrogels for Biomedical Applications

Poly(N-isopropylacrylamide)-Based Thermoresponsive Composite Hydrogels for Biomedical Applications

Smart polymer nanocomposites: A review

Self-Avoiding Random Walks as a Model to Study Athermal Linear Polymers under Extreme Plate Confinement

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