Carbonyl iron coated with a sulfobetaine moiety as a biocompatible system and the magnetorheological performance of its silicone oil suspensions
Date
2016Author
Mrlík, MiroslavIlčíková, Markéta
Cvek, Martin
Pavlínek, Vladimír
Zahoranová, Anna
Kroneková, Zuzana
Kasak, Peter
...show more authors ...show less authors
Metadata
Show full item recordAbstract
In this study, surface modification of carbonyl iron (CI) particles with sulfobetaine moieties (SBE) was performed by the silanization of activated CI to form stable CI-SBE particles. The modification led to a significant improvement of the thermo-oxidation stability and a negligible suppression of the magnetization of the particles, as revealed by thermogravimetric analysis and vibrating sample magnetometry, respectively. The effect of a magnetic field and temperature on the magnetorheological performance of particle suspensions was investigated using a rotational rheometer in order to clarify the suitability of these systems for the local embolization of blood veins. The suspension based on CI-SBE exhibited a pseudoplastic behaviour and a tunable yield stress in a range from 0.3-4 kPa at the normal human body temperature. Moreover, cell viability for fibroblasts and macrophages was examined via MTT assay, which revealed their suitability for the intended applications for the local embolization of blood veins. The Royal Society of Chemistry 2016.
Collections
- Center for Advanced Materials Research [1356 items ]
Related items
Showing items related by title, author, creator and subject.
-
الطبيعة الخاصة لقانون الدفاع الأردني وأثره في القانون الدّاخلي والدّولي – دراسة تحليلية على ضوء أزمة (فيروس كورونا)
معابره, محمد حسني; Ma’abreh, Mohammed H. ( دار نشر جامعة قطر Qatar University Press , 2020 , Article)يتسم قانون الدفاع، موضوع هذه الدراسة، بصبغته الاستثنائية. فهو قانون صادر عن السلطة التشريعية، كغيره من القوانين، ولكنه يختلف عن غيره من فروع القانون العام بأنه قانون نافذ، ولكن غير مُنفّذ إلا في ظروف معيّنة، بحيث لا يُؤذن ... -
Formulation and rheological characterization of piezoelectric nanofluids
Mohamed, Youssry; Al-Abed, Sara; Zannad, Raghad Abu; Meslam, Maram M.; Asad, Rahaf ( Elsevier , 2023 , Article)We introduced a novel concept on energy harvesting nanofluids of hybrid piezoelectric ceramic and polymeric (BaTiO3 and PVdF) materials in PDMS. Rheology, rheo-microscope and impedance spectroscopy complementary enabled ... -
Settling behavior of fine cuttings in fiber-containing polyanionic fluids for drilling and hole cleaning application
Mahmoud H.; Alhajabdalla M.; Nasser M.S.; Hussein I.A.; Ahmed R.; Karami H.... more authors ... less authors ( Elsevier B.V. , 2021 , Article)For efficient drilling operations, cuttings transport within the oil and gas wellbore is fundamental. Inadequate hole cleaning results in many problems including reduced rate of penetration, increased torque, bit wearing, ...