Wszystkie pola: Ciach, A - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Artificial heart: Hydrophobic coating to make it more natural
Autorzy:: Ziętek, P. A.
Butruk, B.
Ciach, T.
Powiązania:: https://bibliotekanauki.pl/articles/115759.pdf
Data publikacji:: 2011
Wydawca:: Fundacja na Rzecz Młodych Naukowców
Tematy:: hydrophobic coatings
polyurethane vascular devices
blood coagulation
Opis:: Polyurethanes are biocompatible materials commonly used in medical applications, mainly as coatings for vascular grafts and artificial hearts. There are many methods to increase hemocompatibility of polyurethane surfaces. Presented study was undertaken to obtain hydrophobic polyurethane coatings by silicone and perfl uorocarbohydrate modification. The aim of this work was to obtain smooth and homogenous coatings, as porous materials are likely to cause blood coagulation. Surface analysis (IR spectroscopy and scanning acoustic microscopy) revealed that the applied method allows to modify polyurethane surface successfully. An increase in material hydrophobicity was confirmed contact angle measurement.
Źródło:: Challenges of Modern Technology; 2011, 2, 3; 15-19
2082-2863
2353-4419
Pojawia się w:: Challenges of Modern Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Cell outer membrane mimetic surface as a material with improved hemocompatibility
Autorzy:: Trzaskowski, M.
Butruk, B.
Ciach, T.
Powiązania:: https://bibliotekanauki.pl/articles/115627.pdf
Data publikacji:: 2011
Wydawca:: Fundacja na Rzecz Młodych Naukowców
Tematy:: phosphatidylcholine
polyurethane
cell outer membrane mimetic surface
artificial heart
Opis:: The phenomenon of blood coagulation on the surfaces of implantable devices such as artifi cial blood vessels, valves or hearts is the major problem that has to be taken into consideration during the construction of such devices. Since the main factor that has an infl uence on clotting of blood is the surface of the material the device is made of, numerous attempts has already been undertaken to modify surfaces of existing materials in order to provide necessary protection against clot formation, very often by coating the materials with bio-active substances. The aim of presented study was to create a coating of phosphatidylcholine that would mimic natural cell outer membrane on the surface of polyurethane — a material already in use in construction of cardiovascular implants. The obtained coated materials have been evaluated with the use of FT-IR/ATR spectroscopy. The change in contact angle of modifi ed material was also investigated. Finally in vitro cytotoxicity tests were performed in order to examine biocompatibility of obtained material.
Źródło:: Challenges of Modern Technology; 2011, 2, 4; 7-10
2082-2863
2353-4419
Pojawia się w:: Challenges of Modern Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Carboxymethyl Cellulose Oxidation to Form Aldehyde Group
Autorzy:: Kulikowska, A.
Wasiak, I.
Ciach, T.
Powiązania:: https://bibliotekanauki.pl/articles/115877.pdf
Data publikacji:: 2013
Wydawca:: Fundacja na Rzecz Młodych Naukowców
Tematy:: oxidation
carboxymethylcellulose
sodium periodate
hydrogen peroxide
iron tetrasulfophthalocyanine
utlenianie
karboksymetyloceluloza
nadjodan sodu
nadtlenek wodoru
żelazo tetrasulfophthalocyanine
Opis:: Oxidation of carboxymethyl cellulose (CMC) is a method of its modification, which allows to improve the functionality of this compound by increasing its reactivity. Presented work describes two methods of oxidation of carboxymethyl cellulose. The first is the conversion of CMC to its dialdehyde derivatives (DCMC) by sodium periodate. In the second method, hydrogen peroxide in the presence of iron tetrasulfophthalocyanine (FePcS) as catalyst was applied. Oxidation degree of CMC in different process parameters and time intervals was estimated using hydroxylamine hydrochloride. Modified CMC will be used in nanoparticles preparation in medical diagnostics.
Źródło:: Challenges of Modern Technology; 2013, 4, 2; 11-18
2082-2863
2353-4419
Pojawia się w:: Challenges of Modern Technology
Dostawca treści:: Biblioteka Nauki

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