Počet záznamů: 1

Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: composition impact on the properties

SYSNO ASEP	0563596
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: composition impact on the properties
Tvůrce(i)	Pergal, M. V. (RS) Ostojić, S. (RS) Steinhart, Miloš (UMCH-V)_RID Stefanović, I. S. (RS) Pezo, L. (RS) Špírková, Milena (UMCH-V)_{RID, ORCID}
Zdroj.dok.	Journal of the Serbian Chemical Society - ISSN 0352-5139 Roč. 87, č. 10 (2022), s. 1203-1218
Poč.str.	16 s.
Jazyk dok.	eng - angličtina
Země vyd.	RS - Srbsko
Klíč. slova	polyurethane ; clay nanofiller ; composition-dependent properties
Vědní obor RIV	CD - Makromolekulární chemie
Obor OECD	Polymer science
CEP	GA18-03932S GA ČR - Grantová agentura ČR
Způsob publikování	Open access
Institucionální podpora	UMCH-V - RVO:61389013
UT WOS	000830542400001
EID SCOPUS	85143403778
DOI	10.2298/JSC220223036P
Anotace	Thermoplastic poly(urethane-siloxane)/organoclay nanocomposites (TPU NCs) with different hard segment content (20–55 wt. %) were prepared by in situ polymerization in the presence of organically modified montmorillonite as a nanofiller (Cloisite 30B, 1 wt. %). Hydroxyl-terminated ethoxypropyl- poly(dimethylsiloxane) was used as soft segment, while 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol were the hard segment components. The study of the influence of the hard segment content on the functional properties of TPU NCs was performed by Fourier transform infrared (FTIR) spectroscopy, X-ray diffractometry (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), dynamic mechanical thermal analyses (DMTA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), water contact angle and water absorption tests. The results revealed that TPU NCs with the increasing hard segment content exhibit higher values of degree of microphase separation, melting temperature of the hard segments, degree of crystallinity, storage modulus (except for TPU NC-55), but lower thermal stability and hydrophobicity. TPU NC films were hydrophobic and their free surface energy was in the range from 17.7 to 24.9 mJ m-2. This work highlights how the composition of TPU NCs would affect their functional properties and provide an additional composition intended for designing advanced TPU NC materials for special biomedical applications.
Pracoviště	Ústav makromolekulární chemie
Kontakt	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Rok sběru	2023
Elektronická adresa	http://www.doiserbia.nb.rs/Article.aspx?ID=0352-51392200036P#.Y2ofj-SZPyQ

Počet záznamů: 1