Počet záznamů: 1
Montmorillonite/poly(urethane-siloxane) nanocomposites: morphological, thermal, mechanical and surface properties
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SYSNO ASEP 0478296 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Montmorillonite/poly(urethane-siloxane) nanocomposites: morphological, thermal, mechanical and surface properties Tvůrce(i) Stefanović, I. S. (RS)
Špírková, Milena (UMCH-V) RID, ORCID
Ostojić, S. (RS)
Stefanov, P. (BG)
Pavlović, V. B. (RS)
Pergal, M. V. (RS)Zdroj.dok. Applied Clay Science. - : Elsevier - ISSN 0169-1317
Roč. 149, 1 December (2017), s. 136-146Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova polyurethane nanocomposites ; thermal properties ; clay nano-fillers Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP GA13-06700S GA ČR - Grantová agentura ČR Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000413133200017 EID SCOPUS 85028307815 DOI 10.1016/j.clay.2017.08.021 Anotace The aim of this work was to prepare and characterize the series of segmented polyurethane nanocomposites (PUNC) modified with poly(dimethylsiloxane) and based on montmorillonite (Mt) as a nano-filler. Alpha, omega-Dihydroxy-poly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) macrodiol was used as the soft segment component, while 4,4´-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD) were selected as the hard segment components. PUNC were synthesized with different ratio of hard/soft segments. PUNC were morphologically, structurally, thermally, mechanically and surface characterized by XRD, TEM, FTIR, AFM, TGA, DMTA, tensile test, XPS, contact angle, surface free energy (SFE) and water absorption measurements. Added Mt (1 wt%) was completely delaminated and well dispersed in the form of mixed exfoliated/intercalated layers in the polymer matrix, and that PUNC have more pronounced microphase separated morphology, higher thermal stability, superior mechanical features, enhanced surface properties, as well as outstanding hydrophobicity. Due to the improved features, developed polymers can be considered as candidates for materials with specific biomedical applications or as waterproof coatings. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2018
Počet záznamů: 1