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Structure-Property Correlation Study of Novel Poly(urethane-ester-siloxane) Networks

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2013
Authors
Pergal, Marija
Džunuzović, Jasna
Poreba, Rafal
Steinhart, Milos G.
Pergal, Miodrag M.
Vodnik, Vesna
Spirkova, Milena
Article (Published version)
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Abstract
Novel poly(urethane-ester-siloxane) networks, based on hydroxypropyl terminated poly(dimethylsiloxane) (PDMS), 4,4'-methylenediphenyl diisocyanate, and hyperbranched polyesters (HBPs) of the second and third pseudogenerations, were synthesized by two-step polymerization. The effects of the PDMS content and pseudogeneration number of HBPs on the structural, thermomechanical, thermal, and surface properties of polyurethanes were investigated. Thermomechanical and thermal properties of polyurethanes and FTIR, SAXS, and SEM results indicated good microphase separated structure. SAXS data suggested that the difference in the HBP pseudogeneration number affects only the global properties of the structure and is much less pronounced than the dependence on the PDMS content, while local properties depend only on the PDMS content. Surface characterization of samples indicated the slightly amphiphilic nature of polyurethanes. The results revealed that the synthesized polyurethanes have good therm...al, thermomechanical, and surface properties, which can be tuned and adjusted for coating application by changing the PDMS content or type of the HBP.

Source:
Industrial and Engineering Chemistry Research, 2013, 52, 18, 6164-6176
Publisher:
  • Amer Chemical Soc, Washington
Projects:
  • Synthesis and characterization of novel functional polymers and polymeric nanocomposites (RS-172062)
  • Czech Science Foundation (GACR) - P108/10/0195

DOI: 10.1021/ie400467j

ISSN: 0888-5885

WoS: 000318838900012

Scopus: 2-s2.0-84877275029
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/1325
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