Elastic Properties of a Swollen PAAm-NIPA Copolymer with Various NIPA Contents

Evingür, Gülşen Akın; Pekcan, Önder

doi:10.1080/03602559.2014.886049

Cited by 7 publications

(11 citation statements)

References 18 publications

(23 reference statements)

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“…The Young modulus value is obtained from the slope of the loading curves and by averaging the results obtained from the calculation of all the recorded measurements for each sample. In most cases it is in the area of several kPa, generally in agreement with available data [ 33 ]. However, we were unable to obtain reliable data for the highly deformable gel labelled as EN1 ( Table 2 ).…”

Section: Resultssupporting

confidence: 86%

Hydrogel Nanofilaments via Core-Shell Electrospinning

et al. 2015

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Recent biomedical hydrogels applications require the development of nanostructures with controlled diameter and adjustable mechanical properties. Here we present a technique for the production of flexible nanofilaments to be used as drug carriers or in microfluidics, with deformability and elasticity resembling those of long DNA chains. The fabrication method is based on the core-shell electrospinning technique with core solution polymerisation post electrospinning. Produced from the nanofibers highly deformable hydrogel nanofilaments are characterised by their Brownian motion and bending dynamics. The evaluated mechanical properties are compared with AFM nanoindentation tests.

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Section: Resultssupporting

confidence: 86%

Hydrogel Nanofilaments via Core-Shell Electrospinning

et al. 2015

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“…Experimental results showed that augmentation of each part of the deformation behavior depends on the amount of initiator, crosslinker, and nanoparticles. 11 , 13 , 21 , 23 , 28 , 54–57…”

Section: Mechanical Behavior Of Nipa Nanocomposite Hydrogelsmentioning

confidence: 99%

“…Langevin chain statistics and the non-Gaussian deformation characteristic during uniaxial loading were used to model rubber elasticity. 10 , 11 , 21 , 23 , 54 , 56 , 58…”

Section: Mechanical Behavior Of Nipa Nanocomposite Hydrogelsmentioning

confidence: 99%

“…Several crosslinking organic compounds are used to increase crosslinking densities and accelerate crosslinking processes. 20–24…”

Section: Introductionmentioning

confidence: 99%

“…Several crosslinking organic compounds are used to increase crosslinking densities and accelerate crosslinking processes. [20][21][22][23][24] Temperature-sensitive hydrogels are one of the important types in stimuli-responsive gels whose degree of swelling is strongly affected by temperature. If temperature-sensitive hydrogels submerge in water or any solution below critical temperature (T c ), they swell noticeably due to water penetration from the surrounding environment.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and microstructural characterization of poly(N-isopropylacrylamide) hydrogels and its nanocomposites

Düşünceli

Sanporean

Drozdov

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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Mechanical behavior dependency of the poly(N-isopropylacrylamide) hydrogel related to the amount of initiator, crosslinker, and nanoparticles was investigated. An experimental approach has been undertaken to observe these dependencies and assess the amount of initiator (ammonium persulfate), crosslinker (N, N′-methylene-bisacrylamide), and nanoparticles (graphene oxide) on the macroscopic responses of poly(N-isopropylacrylamide). Different amounts of initiator, crosslinker, and nanoparticle were used to manufacture specimens for the compression test. The specimens were subjected to compressive loading up to breakage to investigate the breaking behavior of poly(N-isopropylacrylamide). The responses of these specimens indicated that the mechanical behavior of poly(N-isopropylacrylamide) was highly nonlinear and depends on these ingredients. The mechanical responses of poly(N-isopropylacrylamide) were simulated using the ideal network model. The simulation results of the mathematical model substantially complied with the experimental data of poly(N-isopropylacrylamide). In addition, a more in-depth microstructural analysis was performed on these specimens. The analysis results allowed us to correlate the dependent amounts of the ingredients on the nonlinear, mechanical behavior of poly(N-isopropylacrylamide).

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Polyacrylamide mediated polyvinyl pyrrolidone composites incorporated with aligned molybdenum disulfide

Uysal

Evingür

Pekcan

2021

J of Applied Polymer Sci

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In this study, we aimed to design a mechanically durable material consisting of Molybdenum disulfide (MoS 2 ) as 2D material and polyvinyl pyrrolidone (PVP) enhanced Polyacrylamide (PAAm) composites. Composites containing different amounts of MoS 2 were synthesized via a free-radical crosslinking copolymerization method. They were characterized using UV-visible spectroscopy, fluorescence, and mechanical techniques to illuminate band gap energy, absorption, slow release kinetics, and modulus of the composites. Furthermore, the effect of swelling on the elasticity of the composites was investigated. It was observed that the elasticity exhibited similar band gap energies with respect to the MoS 2 content. The results demonstrated that the MoS 2 content strongly influences the optical and mechanical properties of the composites and consequently physical parameters of the composites have been correlated with the various amounts of MoS 2 .

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Elastic Properties of a Swollen PAAm-NIPA Copolymer with Various NIPA Contents

Cited by 7 publications

References 18 publications

Hydrogel Nanofilaments via Core-Shell Electrospinning

Hydrogel Nanofilaments via Core-Shell Electrospinning

Mechanical and microstructural characterization of poly(N-isopropylacrylamide) hydrogels and its nanocomposites

Polyacrylamide mediated polyvinyl pyrrolidone composites incorporated with aligned molybdenum disulfide

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