Skip to main content

Open Access Synthesis of Novel Biobased Polyol via Thiol-Ene Chemistry for Rigid Polyurethane Foams

Download Article:
 Download
(PDF 1,877.4 kb)
 
The objective of this research is to prepare rigid polyurethane (PU) foams from α-phellandrene, a biobased compound. Two types of polyols were synthesized by reacting α-phellandrene with 2-mercaptoethanol and α-thioglycerol via thiol-ene chemistry route. The completion of the reaction was identified by using FTIR. PU foams from α-phellandrene polyols and commercial polyol were compared with regard to foam characteristics and properties. All the PU foams showed apparent density of 28–39 kg/m3 with closed-cell content above 90%. The highest glass transition temperature of 229 °C and compressive strength of 220 kPa were observed for the polyol synthesized by reacting α-phellandrene and α-thioglycerol, due to the higher number of hydroxyl functionalities. The type of polyol also had an influence on thermal stability and foam reactivity. The PU foams from α-phellandrene polyol had lower onset degradation temperature. However, this was improved upon blending with commercial polyol. Foam reactivity was the highest in the polyol consisting of primary hydroxyl groups. This study establishes the preparation of biobased polyols from α-phellandrene for the preparation of rigid PU foam which could be suitable for thermal insulation.

56 References.

No Supplementary Data.
No Article Media
No Metrics

Keywords: BIOBASED POLYOL; POLYURETHANES; RIGID FOAM; THIOL-ENE REACTION; α-PHELLANDRENE

Document Type: Research Article

Publication date: 01 January 2017

This article was made available online on 28 April 2017 as a Fast Track article with title: "Synthesis of Novel Biobased Polyol via Thiol-Ene Chemistry for Rigid Polyurethane Foams".

More about this publication?
  • The Journal of Renewable Materials (JRM) publishes high quality peer reviewed original research on macromolecules and additives obtained from renewable/biobased resources. Utilizing a multidisciplinary approach, JRM introduces cutting-edge research on biobased monomers, polymers, additives (both organic and inorganic), their blends and composites. It showcases both fundamental aspects and new applications for renewable materials. The fundamental theories and topics pertain to chemistry of biobased monomers, macromoners and polymers, their structure-property relationship, processing using sustainable methods, characterization (spectroscopic, morphological, thermal, mechanical, and rheological), bio and environmental degradation, and life cycle analysis. Demonstration of use of renewable materials and composites in applications including adhesives, bio and environmentally degradable structures, biomedicine, construction, electrical & electronics, mechanical, mendable and self-healing systems, optics, packaging, recycling, shape-memory, and stimulus responsive systems will be presented.
  • Editorial Board
  • Submit a Paper
  • Subscribe to this Title
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more