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01.05.2021 | ORIGINAL PAPER

Development of a semi-crystalline hybrid polyurethane nanocomposites for hMSCs cell culture and evaluation of body- temperature shape memory performance and isothermal crystallization kinetics

verfasst von: Hadi Sarkhosh, Mohammad Nourany, Fatemeh Noormohammadi, Hanieh Aghaiee Ranjbar, Mehrad Zakizadeh, Mohammad Javadzadeh

Erschienen in: Journal of Polymer Research | Ausgabe 5/2021

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Abstract

We report synthesis and characterization of a group of reactive in-situ polyurethane (PU) nanocomposites based on PCL₁₀₀₀-PEG₂₀₀₀-PCL₁₀₀₀ block copolymer- diol and MWCNT/Graphene nanoparticles. The experiments were designed to tune shape fixity (SF) and shape recovery (SR) of the specimens. Hydroxyl-functionalized MWCNTs’ content was set constant at 0.25 wt% (T0.25) and Graphene’s content was varied in the range of 0 to 0.75 wt% (G (0–0.75)) to control the crystallization of the soft segment blocks and elastic modulus of the PU nanocomposites. The pure and T0.25G0.50 showed the highest shape fixity (SF = 100%). The optimum sample was PU nanocomposite of T0.25G0.50 with an SR of 95%. The results of Dynamic Mechanical Thermal Analysis (DMTA) indicated lack of flowage for the nanocomposites and their thermoset nature. The non-isothermal crystallization analysis indicated a sharp decline in crystallization temperature (T_c) of the soft segments of T0.25G0 sample and adding graphene nanoplatelets improved the crystallization extent and increased T_c. The isothermal crystallization kinetics of the PUs indicated an increase in crystallization kinetics by increasing graphene’s content compared to T0.25G0 sample. The results of Human Mesenchymal Stem cells (hMSCs) culture indicated an increase in cell adhesion and proliferation as a function of Graphene’s content.

Vorheriger Artikel Research on the viscous flow transition of styrene-isoprene-styrene triblock copolymer by Rheology

Nächster Artikel The effect of metal salts on polyurethane foam: antioxidation and reduction of VOCs emissions

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Titel: Development of a semi-crystalline hybrid polyurethane nanocomposites for hMSCs cell culture and evaluation of body- temperature shape memory performance and isothermal crystallization kinetics
verfasst von: Hadi Sarkhosh
Mohammad Nourany
Fatemeh Noormohammadi
Hanieh Aghaiee Ranjbar
Mehrad Zakizadeh
Mohammad Javadzadeh
Publikationsdatum: 01.05.2021
Verlag: Springer Netherlands
Erschienen in: Journal of Polymer Research / Ausgabe 5/2021
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI: https://doi.org/10.1007/s10965-021-02522-0

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