Pregled bibliografske jedinice broj: 815967
Hydrogen-bonded liquid-crystalline polyurethane complexes with 4-dodecyloxybenzoic acid
Hydrogen-bonded liquid-crystalline polyurethane complexes with 4-dodecyloxybenzoic acid // Acta chimica Slovenica, 52 (2005), 3; 207-214 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 815967 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Hydrogen-bonded liquid-crystalline polyurethane complexes with 4-dodecyloxybenzoic acid
Autori
Ambrožić, Gabriela ; Žigon, Majda
Izvornik
Acta chimica Slovenica (1318-0207) 52
(2005), 3;
207-214
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
supramolecular polyurethanes ; hydrogen bonding ; 4-dodecyloxybenzoic acid ; liquid-crystalline polymers (LCP)
Sažetak
We prepared novel hydrogen-bonded liquid-crystalline polyurethane complexes from 4-dodecyloxybenzoic acid and polyurethane containing pyridyl units in the main chain, based on 2, 6-bis(hydroxymethyl) pyridine. The complexes were investigated by differential scanning calorimetry, polarizing optical microscopy, and X-ray diffractometry. The liquid-crystalline polyurethane complexes were formed at acid/pyridine molar ratios up to 0.4 exhibiting crystal-smectic and smectic-nematic transitions similar to those of the polyurethane complexes with pendant pyridyl units reported on recently. The analogous low-molar mass urethane complex exhibited lower isotropization temperature and a less ordered smectic phase than the polymeric complexes.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
