Flexible magnetic polyurethane/Fe 2 O 3 nanoparticles as organic-inorganic nanocomposites for biomedical applications: Properties and cell behavior

Shahrousvand, Mohsen; Hoseinian, Monireh Sadat; Ghollasi, Marzieh; Karbalaeimahdi, Ali; Salimi, Ali; Tabar, Fatemeh Ahmadi

doi:10.1016/j.msec.2016.12.117

Cited by 100 publications

(51 citation statements)

References 61 publications

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“…The mean roughness (R a ), the root-mean-square roughness (R q ), and the average total roughness (R max ) are the most important parameters of surface roughness. [27]…”

Section: Atomic Force Microscopymentioning

confidence: 99%

Shape memory thin films of polyurethane: Synthesis, characterization, and recovery behavior

Dehaghani

Kaffashi

2020

J of Applied Polymer Sci

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Polyurethane thin films with inherent two phase segregated characters are exceptional candidates for the development of shape memory materials. However, controlling the phase behavior of such complex structures for decoding their recovery behavior still experiences its early stage of development. In this work, polyurethane thin films were synthesized based on two polyols, ester‐based polyols (ESP), and ether‐based polyols (ETP) together with diphenyl diisocyanate (MDI). The effects of ingredient ratio of PETP (ether‐based prepolymer)/PESP (ester‐based prepolymer) on the chemical structure and final properties of polyurethanes were studied by the Fourier‐transformed infrared spectroscopy (FTIR), the differential scanning calorimetry (DSC), the scanning electron microscopy (SEM), the dynamic mechanical thermal analysis (DMTA), a tensiometer, and the atomic force microscopy (AFM). The shape memory behaviors were explored by the thermomechanical cycles applied by a DMTA device in the controlled force mode. The PU films showed various properties compared with the bulk PU since they formed spherulitic textures with different structures. All the PU films except PU‐0 showed high shape recovery ca. 90% in the first cycle with a large glassy storage modulus in the range of 2,800–4,040MPa, and a recovery ratio enhanced by increasing the number of cycle to a maximum of 95%.

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“…The mean roughness (R a ), the root-mean-square roughness (R q ), and the average total roughness (R max ) are the most important parameters of surface roughness. [27]…”

Section: Atomic Force Microscopymentioning

confidence: 99%

Shape memory thin films of polyurethane: Synthesis, characterization, and recovery behavior

Dehaghani

Kaffashi

2020

J of Applied Polymer Sci

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“…Schematic showing process of thermoplastic PU nanocomposite fabrication for potential cell therapy and tissue engineering applications. 66 Shahrousvand et al included iron oxide nanoparticles into PU for tissue engineering applications (Fig. 6); 66 a variety of techniques were used to characterise the films produced, including atomic force microscopy (AFM) to measure surface roughness.…”

Section: Tissue Engineering Scaffolds and Electrospinningmentioning

confidence: 99%

Biomedical applications of polyurethane materials and coatings

Joseph

Patel

Wenham

et al. 2018

Transactions of the IMF

138

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Polyurethanes (PUs), formed by the reaction of diisocyanates with polyols (or equivalent) in the presence of a catalyst, have a wide variety of industrial uses. Much recent attention has focused on their biomedical applications, owing to their biocompatibility, biodegradability and tailorable chemical and physical forms. Examples of such application areas include antibacterial surfaces and catheters, drug delivery vehicles, stents, surgical dressings/pressure sensitive adhesives, tissue engineering scaffolds and electrospinning, nerve generation, cardiac patches and PU coatings for breast implants. Following a brief introduction to PUs, this review surveys selected articles, mostly from 2014 to 2017, that highlight this diverse range of biomedical applications offered by PU materials and coatings.

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“…The versatility of ultrafiltration membranes allows their coupling with unique inorganic particles to enhance their separation performance. Since their discovery, iron oxide nanoparticles (IONPs) have shown promising properties, including hydrophilicity, a high porosity, and a remarkable specific surface‐area‐to‐volume ratio . In addition, IONPs are environmentally friendly and easily accessible.…”

Section: Introductionmentioning

confidence: 99%

Facile modification of polysulfone hollow‐fiber membranes via the incorporation of well‐dispersed iron oxide nanoparticles for protein purification

Said

Hasbullah

Abidin

et al. 2019

J of Applied Polymer Sci

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Protein existence in wastewater is an important issue in wastewater management because proteins are generally present as contaminants and foulants. Hence, in this study, we focused on designing a polysulfone (PSf) hollow-fiber membrane embedded with hydrophilic iron oxide nanoparticles (IONPs) for protein purification by means of ultrafiltration. Before membrane fabrication, the dispersion stability of the IONPs was enhanced by the addition of a stabilizer, namely, citric acid (CA). Next, PSf-IONP-CA nanocomposite hollow-fiber membranes were prepared via a dry-wet spinning process and then characterized in terms of their hydrophilicity and morphology. Ultrafiltration and adsorption experiments were then conducted with bovine serum albumin as a model protein. The results that an IONP/CA weight ratio of 1:20 contributed to the most stable IONP dispersion. It was also revealed that the membrane incorporated with IONP-CA at a weight ratio of 1:20 exhibited the highest pure water permeability (58.6 L m −2 h −1 bar −1 ) and protein rejection (98.5%) while maintaining a low protein adsorption (3.3 μg/cm 2 ). The addition of well-dispersed IONPs enhanced the separation features of the PSf hollow-fiber membrane for protein purification.

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Flexible magnetic polyurethane/Fe 2 O 3 nanoparticles as organic-inorganic nanocomposites for biomedical applications: Properties and cell behavior

Cited by 100 publications

References 61 publications

Shape memory thin films of polyurethane: Synthesis, characterization, and recovery behavior

Shape memory thin films of polyurethane: Synthesis, characterization, and recovery behavior

Biomedical applications of polyurethane materials and coatings

Facile modification of polysulfone hollow‐fiber membranes via the incorporation of well‐dispersed iron oxide nanoparticles for protein purification

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