AC magnetorheology of polymer magnetic composites

Chaudhary, Richa; Chaudhary, Varun; Ramanujan, R.V.; Steele, Terry W. J.

doi:10.1039/d2ma00473a

Cited by 2 publications

(2 citation statements)

References 28 publications

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“…Examples of non-contact, directed energy methods include magnetic induction, microwaves, or infrared irradiation. [64][65][66] Polycaprolactone (polymer backbone within CaproGlu) absorbs in the mid-IR wavelengths. [67] Others have developed elegant infraredbased CO 2 lasers for tissue soldering.…”

Section: Discussionmentioning

confidence: 99%

Tougher Bioadhesives through Dual Stimulation Strategies

Ang,

Djordjevic,

Solic

et al. 2024

Adv Healthcare Materials

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Carbene based bioadhesives have favourable attributes for tissue adhesion, including non‐specific bonding to wet and dry tissues, but suffer from relatively weak fracture strength after photocuring. Light irradiation of carbene‐precursor (diazirine) also creates inert side products that are absent under thermal activation. Herein, a dual activation method combines light irradiation at elevated temperatures for the evaluation of diazirine depletion and effects on cohesive properties. A customized photo/thermal‐rheometer evaluates viscoelastic properties, correlated to the kinetics of carbene:diazoalkane ratios via 19F NMR. The latter exploits the sensitive ‐CF3 functional group to determine joule‐based light/temperature kinetics on trifluoroaryl diazirine consumption. The combination of heat and photoactivation produced bioadhesives that are 3x tougher compared to control. Dual thermal/light irradiation may be a strategy to improve viscoelastic dissipation and toughness of photo‐activated adhesive resins.This article is protected by copyright. All rights reserved

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Section: Discussionmentioning

confidence: 99%

Tougher Bioadhesives through Dual Stimulation Strategies

Ang,

Djordjevic,

Solic

et al. 2024

Adv Healthcare Materials

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“…Contrary to it, organic nanomaterial-based sensors can be operated at room temperature but possess limitations of long-term stability. 22,23 These problems have been addressed through architecting organicinorganic nanocomposites and hybrids of various nanomaterials with diversified merits. 18,[24][25][26][27] Moreover, the synergistic effects and formation of interfacial heterojunctions within the nanocomposites enhance their physicochemical and sensing attributes.…”

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confidence: 99%

Polypyrrole-Ag/AgCl Nanocomposite-Enabled Exhaled Breath-Acetone Monitoring Non-Invasive Biosensor for Diabetes Diagnostics

Chaudhary

Talreja

Khalid

et al. 2023

ECS J. Solid State Sci. Technol.

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The state-of-the-art diabetes diagnosis is concerned with developing non-invasive nano-enabled exhaled breath-acetone detection strategies. Here, we detail the potential of polypyrrole(PPy)– Silver/silver chloride (Ag/AgCl) ternary nanocomposites (NCs) for monitoring low-trace of acetone in human breath for diabetes diagnosis. The PPy–Ag/AgCl NCs were synthesized through in-situ chemical oxidative polymerization of aniline by silver nitrate in the presence of hydrochloric acid. The morphological analysis revealed the existence of spherical Ag/AgCl nanoparticles (~50 nm diameter) embedded in PPy matrix of nano fibrillar morphology (~20 nm diameter). The structural investigations confirm the co-existence of PPy, Ag and AgCl nanoparticles in the ternary nanocomposite. The NC exhibited manifold superior sensing performance towards low trace (as low as ~1 ppm) of breath-acetone with excellent sensitivity (~ 20%), prompt response (~20s), fast recovery (~100s), linear detecting range, and high repeatability at room temperature compared to pristine PPy. It is attributed to synergistic effects in ternary NC due to physicochemical merits of all precursors. Moreover, it showed high stability and selectivity towards acetone in the presence of prominent interfering VOCs and varying humidity. It opens a new window for non-invasive, economic, energy-efficient and point-of-care sensors for diagnosing diabetes in humans and, revolutionizing clinical diagnostics and personal healthcare.

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AC magnetorheology of polymer magnetic composites

Abstract: Determination of the rheological behavior of polymer-magnetic composites is required for real-time industrial processing and incorporating advance material feedback loops. However, the rheological behavior in the presence of an alternating...

Cited by 2 publications

References 28 publications

Tougher Bioadhesives through Dual Stimulation Strategies

Tougher Bioadhesives through Dual Stimulation Strategies

Polypyrrole-Ag/AgCl Nanocomposite-Enabled Exhaled Breath-Acetone Monitoring Non-Invasive Biosensor for Diabetes Diagnostics

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