KaydedilenlerDerginizi ekleyin

Dergiler / Turkish Journal of Chemistry / 2019 / Cilt: 43 - Sayı: 5

Silylation of epoxidized soybean oil with triethoxysilanes, synthesis and characterization of their polyurethanes

Aynur ÖZŞEKER
Mustafa Yasin ŞEN
Kemal KARADENİZ
Sayfa
1365–1382
Yayın Tarihi
2022-11-04
DOI
—
🏛️Bu makalenin bibliyografik verileri ve tam metin bağlantısı DergiPark üzerinden sağlanmıştır.
DergiPark Kaydı ↗
✨

Yapay Zeka Hızlı Bakış & Çıkarımlar

AI Insight
⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Chain extended polyurethanes had 11-13 % higher LOI value than the corresponding non-chain extended polyurethanes.

📌 3 Maddede Bu Makale

🎯
Amaç & Hipotez:Silylation of epoxidized soybean oil (ESBO) was carried out by epoxy ring opening reaction of methoxyand ethoxy silane compounds. 1 H NMR and FTIR spectra confirmed that two novel bio-based polyols, PSiTh and PSiAm, were obtained through the ring opening of epoxy by the mercapto and amino moieties of MPTMS and APTES, respectively.
📊
Temel Bulgular & Veri:Polyurethanes of these polyols were prepared using 4,4´ - methylene-bis(phenyl isocyanate) (MDI) to incorporate silanol groups into polymer network and were labeled as PUSiTh and PUSiAm, respectively.
💡
Sonuç & Katkı:Chain extended polyurethanes had 11-13 % higher LOI value than the corresponding non-chain extended polyurethanes.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Abstract

Silylation of epoxidized soybean oil (ESBO) was carried out by epoxy ring opening reaction of methoxyand ethoxy silane compounds. 1 H NMR and FTIR spectra confirmed that two novel bio-based polyols, PSiTh and PSiAm, were obtained through the ring opening of epoxy by the mercapto and amino moieties of MPTMS and APTES, respectively. Polyurethanes of these polyols were prepared using 4,4´ - methylene-bis(phenyl isocyanate) (MDI) to incorporate silanol groups into polymer network and were labeled as PUSiTh and PUSiAm, respectively. To see the impact of silanol and phosphorous groups on flame retardant properties, the chain extended polyurethanes, PUSiThCE and PUSiAmCE were also prepared with bisphenol-A bis (hydroxy phenyl phosphonate) (BABHPP). Polyurethanes bearing thio-ether bonds besides alkoxy silane groups were characterized using FTIR spectroscopy. Prepared foams exhibited significant thermal stability and flame retardant properties with a limiting oxygen index (LOI) of 22-24%. Chain extended polyurethanes had 11-13 % higher LOI value than the corresponding non-chain extended polyurethanes.

🔖

Bu Makaleye Atıf Yap

ÖZŞEKER, A., ŞEN, M. Y., KARADENİZ, K. (2022). Silylation of epoxidized soybean oil with triethoxysilanes, synthesis and characterization of their polyurethanes. Turkish Journal of Chemistry, Cilt: 43 - Sayı: 5, 1365–1382. https://ajindex.com/articles/601648

📄 Tam Metin PDF Okuyucu

📄

PDF görüntüleyici hazırlanıyor...

Kaynakça (12)

  1. Salon MCB, Belgacem MN. Hydrolysis-Condensation Kinetics of Different Silane Coupling Agents. Phosphorus, Sulfur and Silicon 2007
  2. doi: 10.1080/10426507.2010.494644 2. Fasce DP, dell’Erba IE, Williams RJJ. Synthesis of a soluble functionalized-silica by the hydrolysis and condensation of organotrialkoxysilanes bearing (b-hydroxy) tertiary amine groups with tetraethoxysilane. Polymer 2005
  3. doi: 10.1016/j.polymer.2005.05.019 3. Feng L, Zhu S, Zhang W, Mei K, Wang H, Feng S.Preparation and Characterization of Functional Alkoxysilanes via Catalyst-Free Aza-Michael Reaction. Chemistry Select 2017
  4. doi:10.1002/slct.201700492 4. Rainone R, Malaspina T, Xavier LA, Riveros JM. The gas-phase alcoholysis of protonated homoleptic alkoxysilanes. European Journal of Mass Spectrometry 2010
  5. doi: 10.1255/ejms.1077 5. Orel B, Jese R, Vilcnic A, Stangar UL. Hydrolysis and Solvolysis of Methyltriethoxysilane Catalyzed with HCl or Trifluoroacetic Acid: IR Spectroscopic and Surface Energy Studies. Journal of Sol-Gel Science and Technology 2005
  6. doi: 10.1007/s10971-005-2522-7 6. Eisenberg P, Balsells RE, Ishikava Y, Lucas JC, Mauri AN et al.Cage-like Precursors of High-Molar-Mass Silsesquioxanes Formed by the Hydrolytic Condensation of Trialkoxysilanes. Macromolecules 2000
  7. doi: 10.1021/ma9912507 CCC: $19.00 7. Demjen Z, Pukanzky B, Jr JN. Possible coupling reactions of functional silanes and polypropylene. Polymer 1999
  8. doi: 10.1016/S0032-3861(98)00396-6 8. Yilgör E, Yilgör I. Silicone containing copolymers: Synthesis, properties and applications. Progress in Polymer Science 2014
  9. doi: 10.1016/j.progpolymsci.2013.11.003 9. Zhou Y, Guan C, Luo Z.Kinetic modeling of two-step RAFT process for the production of novel fluorosilicone triblock copolymers. European Polymer Journal 2010
  10. doi: 10.1016/j.eurpolymj.2010.09.002 10. Theogarajan L, Desai S, Baldo M, Scholz C.Versatile synthesis of self-Assembling ABA triblock copolymers with polymethyloxazoline A-blocks and a polysiloxane B-block decorated with supramolecular receptors. Polymer International 2008
  11. doi:10.1002/pi.2401 11. Huan K, Bes L, Haddleton DM, Khoshdel E. Synthesis and Properties of Polydimethylsiloxane-Containing Block Copolymers via Living Radical Polymerization. Journal of Polymer Science: Part A: Polymer Chemistry 2001
  12. doi: 10.1002/pola.1161 12. Sheth JP, Anej