PVA hydrogel deformation in response to change in temperature or pH

• Autorzy: Kazimierska-Drobny Katarzyna

Identyfikatory

DOI

10.24425/bpasts.2021.136724

• Języki publikacji: EN

Abstrakty

EN

Biocompatibility, biodegradability and non-toxicity are the main attributes of any material to be used in biomedical applications. Among all the potential stimuli, pH, salt and temperature exist naturally in the internal environment of the human body. Hence internal stimuli responsive hydrogels can be exploited for specific drug delivery and tissue replacement. Poly(vinyl alcohol) (PVA) is the world’s largest volume synthetic polymer, produced for its excellent chemical resistance, physical properties and complete biodegradability, which has resulted in broad practical applications. PVA could be considered a suitable host material due to its good thermo-stability, chemical resistance and film-forming ability. It is also an important material because of its large-scale applications. Novel data analysis techniques were developed to analyze the response of PVA to external stimuli, including temperature and/or pH. The presented non-contact method shows that the PVA polymer gel, physically cross-linked by freezing and thawing, shrinks and swells under the influence of temperature, which is a reversible phenomenon. Under the given conditions, such as temperature, pH and mechanical load, the dominant factor affecting the swelling or contraction of the hydrogel is the change in the temperature of the liquid in which the PVA hydrogel sample is immersed.

Słowa kluczowe

EN

PVA; hydrogels; non-contact method; thermal deformation; pH sensitivity

PL

PVA; hydrożel; metoda bezkontaktowa; odkształcenie termiczne; wrażliwość na pH

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2021
• Tom: Vol. 69, nr 2
• Strony: art. no. e136724
• Opis fizyczny: Bibliogr. 27 poz., rys., tab.

Twórcy

autor

Kazimierska-Drobny Katarzyna

• Department of Mechatronics, Bydgoszcz Kazimierz Wielki University, Kopernika 1 street, 85-074 Bydgoszcz, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).