Synthesis of cashew Mannich polyol via a three step continuous route and development of PU rigid foams with mechanical, thermal and fire studies
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Tejas S. Gandhi
Abstract
Renewable, biodegradable, agricultural resources are gaining increasing attention of many researchers because of growing environmental awareness and their potential to replace petrochemical derivatives. Cardanol obtained from cashew nut shell liquid (CNSL) is a renewable resource of immense potential. Cardanol, obtained as a byproduct of the cashew processing industry, is an important renewable resource and a unique phenolic compound carrying a 15-carbon side chain in the meta position, with varying degrees of unsaturation. The current research work describes the synthesis of new bio-based cashew Mannich polyols via the stepwise oxazolidine route and confirmed by spectral analysis. The foaming characteristics were studied and the polyols were successfully used in making rigid polyurethane (PU) foams with good mechanical, thermal and fire properties. The foams were characterized for density, flexural strength, morphology and limiting oxygen index (LOI) properties.
Acknowledgments
We would also like to acknowledge Mr. Abhijit and Mr. Jayraman, Technical Manager of Honeywell Company, Haryana, India and Sales Executive, Evonik Compony, Germany providing valuable materials (surfactant and catalysts). I wish thank to Mr. Hitesh Sloanki and Mr. Jagdish Deora from Atira (Ahmadabad Textile Industry’s Research Association) Gujarat-India for their assistance in mechanical, thermal and fire properties. I wish to thank the members of the analytical group of the SAIF Punjab University for spectral measurements.
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Supplemental Material
The online version of this article (DOI: 10.1515/polyeng-2014-0176) offers supplementary material, available to authorized users.
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Artikel in diesem Heft
- Frontmatter
- Original articles
- Preparation and application of fluorinated-siloxane protective surface coating material for stone inscriptions
- The effect of the preparation process on the swelling behavior of silk fibroin-polyurethane composite hydrogels using a full factorial experimental design
- Synthesis of cashew Mannich polyol via a three step continuous route and development of PU rigid foams with mechanical, thermal and fire studies
- Effect of chemical treatment on the mechanical and water absorption properties of bagasse fiber-reinforced epoxy composites
- Environmentally degradable sago starch filled low-density polyethylene
- The effect of hybrid nanoparticle with silica sol as the supporter on the crystallization behavior and mechanical properties of isotactic polypropylene
- Towards novel wound dressings: antibacterial properties of zinc oxide nanoparticles and electrospun fiber mats of zinc oxide nanoparticle/poly(vinyl alcohol) hybrids
- Nanofiber formation in the presence of an external magnetic field in electrospinning
- Preparation and characterization emulsion of PANI-TiO2 nanocomposite and its application as anticorrosive coating
- The effect of the geometry of extrusion head flow channels on the adiabatic extrusion of low density polyethylene
Artikel in diesem Heft
- Frontmatter
- Original articles
- Preparation and application of fluorinated-siloxane protective surface coating material for stone inscriptions
- The effect of the preparation process on the swelling behavior of silk fibroin-polyurethane composite hydrogels using a full factorial experimental design
- Synthesis of cashew Mannich polyol via a three step continuous route and development of PU rigid foams with mechanical, thermal and fire studies
- Effect of chemical treatment on the mechanical and water absorption properties of bagasse fiber-reinforced epoxy composites
- Environmentally degradable sago starch filled low-density polyethylene
- The effect of hybrid nanoparticle with silica sol as the supporter on the crystallization behavior and mechanical properties of isotactic polypropylene
- Towards novel wound dressings: antibacterial properties of zinc oxide nanoparticles and electrospun fiber mats of zinc oxide nanoparticle/poly(vinyl alcohol) hybrids
- Nanofiber formation in the presence of an external magnetic field in electrospinning
- Preparation and characterization emulsion of PANI-TiO2 nanocomposite and its application as anticorrosive coating
- The effect of the geometry of extrusion head flow channels on the adiabatic extrusion of low density polyethylene
