Montmorillonite/poly(urethane-siloxane) nanocomposites: morphological, thermal, mechanical and surface properties

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F17%3A00478296" target="_blank" >RIV/61389013:_____/17:00478296 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.clay.2017.08.021" target="_blank" >http://dx.doi.org/10.1016/j.clay.2017.08.021</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.clay.2017.08.021" target="_blank" >10.1016/j.clay.2017.08.021</a>

Result language
angličtina
Original language name
Montmorillonite/poly(urethane-siloxane) nanocomposites: morphological, thermal, mechanical and surface properties
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science

Project
<a href="/en/project/GA13-06700S" target="_blank" >GA13-06700S: Multifunctional highly elastic polymeric materials with controlled biodegradability</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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