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Sinteza i karakterizacija poliuretanskih kopolimera na bazi poli(propilenoksid)-block-poli(dimetilsiloksan)-block-poli(propilenoksida) i njihovih nanokopozita sa organomodifikovanom glinom

Synthesis and characterization of polyurethane copolymers based on poly(propylene oxide)-block- poly(dimethylsiloxane)-block- poly(propylene oxide) and their nanocomposites with organomodified clay.

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2017
2578-teza.pdf (9.214Mb)
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Authors
Stefanović, Ivan
Contributors
Pergal, Marija
Tešević, Vele
Đonlagić, Jasna
Vujisić, Ljubodrag V.
Doctoral thesis (Published version)
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Abstract
Dve serije segmentiranih poliuretanskih kopolimera (SPU) i njihovih nanokompozita (SPUNC) su sintetisane na bazi α,ω-dihidroksi-poli(propilen-oksid)-b-poli(dimetilsiloksan)-b-poli(propilen-oksida) (PPO-PDMS, Mn = 3060 g mol-1) kao dela mekog segmenta i 4,4'-metilendifenildiizocijanata (MDI) i 1,4-butandiola (BD) kao komonomera tvrdog segmenta. Serija SPU-a je sintetisana dvostepenim postupkom poliadicije u smeńi rastvarača tetrahidrofurana (THF) i N,N-dimetilacetamida (DMAc) (1/1, v/v), uz prisustvo kalaj-oktoata kao katalizatora...
Two series of segmented polyurethane copolymers (SPU) and their nanocomposites (SPUNC) were synthesized based on α,ω-dihydroxy-poly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) (PPO-PDMS, Mn = 3060 g mol-1) as the part of the soft segment and 4,4'-methylenediphenyldiisocyanate (MDI) and 1,4-butanediol (BD) as the comonomers of the hard segment. Series of SPU was synthesized via a two-step polyaddition reaction in solvent mixture of tetrahydrofuran (THF) and N,N-dimethylacetamide (DMAc) (1/1, v/v) and in the presence of tin-octoate as a catalyst...
Keywords:
segmentirani poliuretani / segmented polyurethanes / poliuretanski nanokompoziti / poli(dimetlsiloksani) / glina / termička svojstva / mehanička svojstva / površinska svojstva / hidrofobnost / morfologija / mikrofazna separacija / polyurethane nanocomposites / poly(dimethylsiloxane) / clay / thermal properties / mechanical properties / surface properties / hydrophobicity / morphology / microphase separation
Source:
Универзитет у Београду, 2017
Publisher:
  • Универзитет у Београду, Хемијски факултет
Projects:
  • Synthesis and characterization of novel functional polymers and polymeric nanocomposites (RS-172062)
[ Google Scholar ]
URI
http://eteze.bg.ac.rs/application/showtheses?thesesId=5726
https://fedorabg.bg.ac.rs/fedora/get/o:17536/bdef:Content/download
http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=49962511
http://nardus.mpn.gov.rs/123456789/9356
http://cer.ihtm.bg.ac.rs/handle/123456789/2580
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