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Pregled bibliografske jedinice broj: 165047

Motional heterogeneity and phase separation of semi-interpenetrating networks and mixtures based on functionalised polyurethane and polymethacrylate prepolymers

Čulin, Jelena; Šmit, Ivan; Andreis, Mladen; Veksli, Zorica; Anžlovar, Alojz; Žigon, Majda
Motional heterogeneity and phase separation of semi-interpenetrating networks and mixtures based on functionalised polyurethane and polymethacrylate prepolymers // Polymer, 46 (2005), 1; 89-99 doi:10.1016/j.polymer.2004.11.011 (međunarodna recenzija, članak, znanstveni)

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Naslov
Motional heterogeneity and phase separation of semi-interpenetrating networks and mixtures based on functionalised polyurethane and polymethacrylate prepolymers

Autori
Čulin, Jelena ; Šmit, Ivan ; Andreis, Mladen ; Veksli, Zorica ; Anžlovar, Alojz ; Žigon, Majda

Izvornik
Polymer (0032-3861) 46 (2005), 1; 89-99

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Functionalized polyurethane-polymethacrylate ; semi-interpenetrating networks ; heterogeneity ; ESR

Sažetak
Semi-interpenetrating polymer networks (SIPNs) and polymer mixtures (1:1 mass ratio) based on segmented polyester polyurethane (PU) with carboxylic groups and methacrylic copolymer (PM) with tertiary amine groups were studied by the electron spin resonance (ESR) spin label method. The concentration of functional groups varied from 0 to 0.45 mmol g-1 in both prepolymers. The ESR spectra of spin labelled PM component were used to characterise the heterogeneity of segmental motion and transitions due to the additional polymer interactions imposed by complementary functional groups. The results were deduced from the temperature dependent ESR spectra. Two component spectra reflect the effect of PU chains on segmental motion of the PM component below the macroscopic glass transition temperature, Tg. The ratio of the fast and slow component was related to the complex polymer-polymer interaction or extent of miscibility. Restrictions of segmental motion of PM chains increase with functional groups concentration and above certain concentration (0.25 mmol g-1) PM segments in the network assess faster motion suggesting a change in the local packing density and domain structure. An increased miscibility and disorganisation of the ordered domains are confirmed by the loss of spherulitic morphology and crystallinity at higher functional groups concentration. PU/PM mixtures reveal similar motional behaviour as SIPNs of the same composition. However, the differences in the fractional amount of fast and slow motions confirm better interpenetration and interaction of the two polymers in the SIPNs. The results of motional heterogeneity and polymer interactions were complemented with the Tgs.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA

Projekti:
0098064
0098038

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Mladen Andreis (autor)

Avatar Url Jelena Čulin (autor)

Avatar Url Ivan Šmit (autor)

Avatar Url Zorica Veksli (autor)

Poveznice na cjeloviti tekst rada:

doi www.sciencedirect.com doi.org

Citiraj ovu publikaciju:

Čulin, Jelena; Šmit, Ivan; Andreis, Mladen; Veksli, Zorica; Anžlovar, Alojz; Žigon, Majda
Motional heterogeneity and phase separation of semi-interpenetrating networks and mixtures based on functionalised polyurethane and polymethacrylate prepolymers // Polymer, 46 (2005), 1; 89-99 doi:10.1016/j.polymer.2004.11.011 (međunarodna recenzija, članak, znanstveni)
Čulin, J., Šmit, I., Andreis, M., Veksli, Z., Anžlovar, A. & Žigon, M. (2005) Motional heterogeneity and phase separation of semi-interpenetrating networks and mixtures based on functionalised polyurethane and polymethacrylate prepolymers. Polymer, 46 (1), 89-99 doi:10.1016/j.polymer.2004.11.011.
@article{article, author = {\v{C}ulin, Jelena and \v{S}mit, Ivan and Andreis, Mladen and Veksli, Zorica and An\v{z}lovar, Alojz and \v{Z}igon, Majda}, year = {2005}, pages = {89-99}, DOI = {10.1016/j.polymer.2004.11.011}, keywords = {Functionalized polyurethane-polymethacrylate, semi-interpenetrating networks, heterogeneity, ESR}, journal = {Polymer}, doi = {10.1016/j.polymer.2004.11.011}, volume = {46}, number = {1}, issn = {0032-3861}, title = {Motional heterogeneity and phase separation of semi-interpenetrating networks and mixtures based on functionalised polyurethane and polymethacrylate prepolymers}, keyword = {Functionalized polyurethane-polymethacrylate, semi-interpenetrating networks, heterogeneity, ESR} }
@article{article, author = {\v{C}ulin, Jelena and \v{S}mit, Ivan and Andreis, Mladen and Veksli, Zorica and An\v{z}lovar, Alojz and \v{Z}igon, Majda}, year = {2005}, pages = {89-99}, DOI = {10.1016/j.polymer.2004.11.011}, keywords = {Functionalized polyurethane-polymethacrylate, semi-interpenetrating networks, heterogeneity, ESR}, journal = {Polymer}, doi = {10.1016/j.polymer.2004.11.011}, volume = {46}, number = {1}, issn = {0032-3861}, title = {Motional heterogeneity and phase separation of semi-interpenetrating networks and mixtures based on functionalised polyurethane and polymethacrylate prepolymers}, keyword = {Functionalized polyurethane-polymethacrylate, semi-interpenetrating networks, heterogeneity, ESR} }

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

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