Study of the properties of urethane-siloxane copolymers based on poly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) soft segments

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F16%3A00459279" target="_blank" >RIV/61389013:_____/16:00459279 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.iecr.5b04975" target="_blank" >http://dx.doi.org/10.1021/acs.iecr.5b04975</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.iecr.5b04975" target="_blank" >10.1021/acs.iecr.5b04975</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study of the properties of urethane-siloxane copolymers based on poly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) soft segments

Popis výsledku v původním jazyce

Segmented polyurethanes (PURs) were prepared from α,ω-dihydroxypoly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) (PPO–PDMS) as the soft segment and 4,4-diphenylmethane diisocyanate and 1,4-butanediol as the hard segment, via two-step polyaddition process in solvent mixture. The content of hard segments is in the range from 10 to 60 wt %. The structure and composition of PURs are determined by 1H NMR, 13C NMR, and ATR-FTIR spectroscopy. Incorporation of PPO–PDMS leads to improvements in thermal stability. Small- and wide-angle X-ray scattering experiments indicate that synthesized PURs with higher content of hard segments have more developed and distinct phase separated morphologies. Dynamic mechanical thermal analysis shows that copolymers have multiple transitions, characteristic for phase-separated systems. The water contact angle increases while water absorption decreases with increasing content of PPO–PDMS segments. The PURs prepared in this work show good thermal, mechanical features with phase separated morphology and high water resistance that enable their widespread application.

Název v anglickém jazyce

Study of the properties of urethane-siloxane copolymers based on poly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) soft segments

Popis výsledku anglicky

Segmented polyurethanes (PURs) were prepared from α,ω-dihydroxypoly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) (PPO–PDMS) as the soft segment and 4,4-diphenylmethane diisocyanate and 1,4-butanediol as the hard segment, via two-step polyaddition process in solvent mixture. The content of hard segments is in the range from 10 to 60 wt %. The structure and composition of PURs are determined by 1H NMR, 13C NMR, and ATR-FTIR spectroscopy. Incorporation of PPO–PDMS leads to improvements in thermal stability. Small- and wide-angle X-ray scattering experiments indicate that synthesized PURs with higher content of hard segments have more developed and distinct phase separated morphologies. Dynamic mechanical thermal analysis shows that copolymers have multiple transitions, characteristic for phase-separated systems. The water contact angle increases while water absorption decreases with increasing content of PPO–PDMS segments. The PURs prepared in this work show good thermal, mechanical features with phase separated morphology and high water resistance that enable their widespread application.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

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

2016

Kód důvěrnosti údajů

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

Název periodika

Industrial and Engineering Chemistry Research

ISSN

0888-5885

e-ISSN

—

Svazek periodika

55

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

3960-3973

Kód UT WoS článku

000374274200010

EID výsledku v databázi Scopus

2-s2.0-84964691145