Thermal Analysis of Biomaterials

Nazhat, Showan N.

doi:10.1002/9780470697702.ch7

Cited by 4 publications

(3 citation statements)

References 18 publications

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“…The efficacy of the filler at a certain temperature is expressed as the ratio R E 0 between the E 0 of the flaxreinforced EPDM and EPDM with no reinforcement. 18 The values V m and R E 0 at four temperatures, one before the glass transition (À60 C) and three on the rubbery plateau (60, 150, and 250 C), are also included in Table 1.…”

Section: Dynamic Mechanical Properties Of Flax-epdm Compositesmentioning

confidence: 99%

Relaxation behavior of flax-reinforced ethylene–propylene–diene rubber

Cristea¹,

Airinei²,

Ionita³

et al. 2015

High Performance Polymers

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The molecular dynamics of flax-reinforced ethylene-propylene-diene monomer (EPDM) composites, with increasing quantities of flax (EPDM 0 -EPDM 20 ), was investigated by dynamic mechanical analysis. Multifrequency experiments were also performed in order to distinguish between the relaxation and the kinetic events. Also the time-temperature superposition was applied to the multifrequency results for obtaining the master curves. They were used to anticipate the behavior of the composites in time and to calculate the activation energies using the Williams-Landel-Ferry equation.

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Section: Dynamic Mechanical Properties Of Flax-epdm Compositesmentioning

confidence: 99%

Relaxation behavior of flax-reinforced ethylene–propylene–diene rubber

Cristea¹,

Airinei²,

Ionita³

et al. 2015

High Performance Polymers

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“…Understanding the thermal characteristics of the composite, especially for biomedical applications, is the key to preparing new material composition and fabrication. Thermal analysis is helpful in determining maximum temperature in which composite maintains its properties, so the sterilization or surface modification can be performed without affecting the material properties [40,41]. Analysis of the above results may be a starting point for further experiments, including modifications of the chemical composition, surface modifications and biological treatment [42].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Physiological Incubation on the Properties of Elastic Magnetic Composites for Soft Biomedical Sensors

Mystkowska

Powojska

Łysik

et al. 2021

Sensors

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Magnetic micro- and nanoparticles (MPs)-based composite materials are widely used in various applications in electronics, biotechnology, and medicine. This group of silicone composites have advantageous magnetic and mechanical properties as well as sufficient flexibility and biocompatibility. These composites can be applied in medicine for biological sensing, drug delivery, tissue engineering, and as remote-controlled microrobots operating in vivo. In this work, the properties of polydimethylsiloxane (PDMS)-based composites with different percentages (30 wt.%, 50 wt.%, 70 wt.%) of NdFeB microparticles as a filler were characterized. The novelty of the work was to determine the influence of the percentage of MP content and physiological conditioning on the properties of the PDMS-MP composites after in vitro incubation. An important essence of the work was a comprehensive study of the properties of materials important from the point of view of medical applications. Materials were tested before and after conditioning in 0.9 wt.% NaCl solution at a temperature of 37 °C. Several studies were carried out, including thermal, physicochemical, and rheological tests. The results show that with an increase of the incubation time, most of the measured thermal and physicochemical parameters decreased. The presence of the magnetic filler, especially at a concentration of 70 wt.%, has a positive effect on thermal stability and physicochemical and rheological properties. The performed tests provided important results, which can lead to further research for a broader application of magnetic composites in the biomedical field.

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“…Recently, it is reported that CH/HA matrices have a pore network configuration and exhibit enhanced ECM cartilage formation, thus proved to have potential use in cartilage repair . The mechanical, thermo‐physical, and biological assays of these scaffolds are studied in detail by Nazhat and Showan . Tan et al reported on the development of a composite hydrogel derived from water‐soluble CH and oxidized HA without the addition of a chemical crosslinking agent .…”

Section: Introductionmentioning

confidence: 99%

Calcium ion modulates protein release from chitosan-hyaluronic acid poly electrolyte gel

2015

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Polyelectrolyte complex (PEC) of chitosan (CH) and hyaluronic acid (HA) are widely used for skin, cartilage, and bone tissue engineering. However, no reports are seen on their response at high ionic media, like increased Ca2+ where they are likely to be exposed in the form of bone constructs and the influence of these ions on modulating the release of incorporated entities such as drugs and growth factors. Here, we prepared freeze dried scaffolds of PEC of CH and HA (CH‐HA) and characterized them by FTIR, TGA, SEM, and ESEM. FITC conjugated BSA, designated as FA, was incorporated into the PEC to study the release properties in response to Ca2+. The swellability of CH‐HA and the extent of drug release from the matrix, FA loaded CH‐HA was studied in deionised water and aqueous Na+ and Ca2+ solutions. Swelling and drug release were high for the matrix in aqueous Ca2+ whereas it was remarkably low in water and Na+. Drug released was found to increase with concentrations of Ca2+ (0.02–1.0M) indicating that CH‐HA is a promising matrix for Ca2+ responsive delivery of agents to accelerate healing of bone cracks, which is known to release high amount of Ca2+. POLYM. ENG. SCI., 55:2089–2097, 2015. © 2015 Society of Plastics Engineers

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Thermal Analysis of Biomaterials

Cited by 4 publications

References 18 publications

Relaxation behavior of flax-reinforced ethylene–propylene–diene rubber

Relaxation behavior of flax-reinforced ethylene–propylene–diene rubber

The Effect of Physiological Incubation on the Properties of Elastic Magnetic Composites for Soft Biomedical Sensors

Calcium ion modulates protein release from chitosan-hyaluronic acid poly electrolyte gel

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