The influence of the size, shape and character of nanofillers on functional properties of polyurethane elastomers

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The influence of the size, shape and character of nanofillers on functional properties of polyurethane elastomers

Popis výsledku v původním jazyce

The chapter is aimed at polyurethane-inorganic nanofiller nanocomposite preparation and characterization. Polyurethane (PU) matrix is formed from aliphatic polycarbonate-based diol (MW ca. 2000; macrodiol, MD), hexamethylene diisocyanate (HDI) and butane1,4-diol (BD; used as the chain extender). One-step procedure for PU and PU nanoomposite preparation was used. Equal ratio of MD-to-BD hydroxyl groups was used in the synthesis. PU and PU nanocomposites contain 81-82 wt. % of soft (polycarbonate-based)segments and 18 wt. % of hard segments (HDI-BD product). Pure PU matrix is distinguished by (i) thermoplastic character, (ii) high degree of the phase separation of soft and hard segments; (iii) low crystallinity (< 10%) and (iv) very good mechanical andthermomechanical properties, resulting from tensile tests and dynamic mechanical thermal analysis. Silica nanoparticles differing in size (7 to 40 nm) were used as the nanofiller in the concentration 1 wt. % in the PU nanocomposite. The

Název v anglickém jazyce

The influence of the size, shape and character of nanofillers on functional properties of polyurethane elastomers

Popis výsledku anglicky

The chapter is aimed at polyurethane-inorganic nanofiller nanocomposite preparation and characterization. Polyurethane (PU) matrix is formed from aliphatic polycarbonate-based diol (MW ca. 2000; macrodiol, MD), hexamethylene diisocyanate (HDI) and butane1,4-diol (BD; used as the chain extender). One-step procedure for PU and PU nanoomposite preparation was used. Equal ratio of MD-to-BD hydroxyl groups was used in the synthesis. PU and PU nanocomposites contain 81-82 wt. % of soft (polycarbonate-based)segments and 18 wt. % of hard segments (HDI-BD product). Pure PU matrix is distinguished by (i) thermoplastic character, (ii) high degree of the phase separation of soft and hard segments; (iii) low crystallinity (< 10%) and (iv) very good mechanical andthermomechanical properties, resulting from tensile tests and dynamic mechanical thermal analysis. Silica nanoparticles differing in size (7 to 40 nm) were used as the nanofiller in the concentration 1 wt. % in the PU nanocomposite. The

Druh

C - Kapitola v odborné knize

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-06700S" target="_blank" >GA13-06700S: Multifunkční vysoce elastické polymerní materiály s řízenou biodegradabilitou</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Nanocomposites: Synthesis, Characterization and Applications

ISBN

978-1-62948-226-2

Počet stran výsledku

22

Strana od-do

259-280

Počet stran knihy

430

Název nakladatele

Nova Science Publishers

Místo vydání

New York

Kód UT WoS kapitoly

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