Poly(urethane-acrylate) aerogels from the isocyanurate trimer of isophorone diisocyanate

Scientific publication - Journal Article uoadl:2867130 364 Read counter

Unit:
Department of Chemistry
Title:
Poly(urethane-acrylate) aerogels from the isocyanurate trimer of isophorone diisocyanate
Languages of Item:
English
Abstract:
Poly(urethane acrylate) aerogels were synthesized from radical polymerization of a dendritic monomer having an isocyanurate-based rigid/aliphatic core, urethane linkages and nine terminal acrylate groups. The rigidity of the core comes from the triisocyanate, an isophorone diisocyanate trimer (IPDI). The material properties of those aerogels were compared to the properties of related literature materials derived from triisocyanates with flexible/aliphatic or rigid/aromatic cores, bearing (a) three, or (b) nine terminal acrylate groups. Data support that material properties such as the primary particle size and the BET surface areas are determined mainly by the degree of crosslinking (i.e., the monomer multifunctionality), while the molecular rigidity vs flexibility of the triisocyanate core plays only a secondary role. Addition of ethylene glycol dimethacrylate (EG) in the sol as a chain extender increased the hydrophilicity of the aerogels and their ability to absorb water.
Publication year:
2019
Authors:
Maria Papastergiou, Despoina Chriti, Dimitrios E. Damalas, Grigorios Raptopoulos, Patrina Paraskevopoulou
Journal:
The Journal of Supercritical Fluids
Publisher:
Elsevier
Volume:
148
Number:
June 2019
Pages:
42-54
Keywords:
Aerogel, Isocyanurate, Isophorone triisocyanate, Polyurethane, Acrylate, PIR-PUR
Main subject category:
Science
Project information:
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 685648.
The digital material of the item is not available.