Novel Biobased Polyol Using Corn Oil for Highly Flame-Retardant Polyurethane Foams
A novel bio-based polyol was synthesized using corn oil and 2-mercaptoethanol via thiol-ene reaction as an alternative to petroleum-based polyol for the synthesis of polyurethane foams. The polyol was analyzed using wet chemical techniques to obtain hydroxyl number and viscosity. Infrared spectrosco...
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| Format: | Article |
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MDPI AG
2019-03-01
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| Series: | C |
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| Online Access: | http://www.mdpi.com/2311-5629/5/1/13 |
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| author | Sneha Ramanujam Camila Zequine Sanket Bhoyate Brooks Neria Pawan K. Kahol Ram K. Gupta |
| author_facet | Sneha Ramanujam Camila Zequine Sanket Bhoyate Brooks Neria Pawan K. Kahol Ram K. Gupta |
| author_sort | Sneha Ramanujam |
| collection | DOAJ |
| description | A novel bio-based polyol was synthesized using corn oil and 2-mercaptoethanol via thiol-ene reaction as an alternative to petroleum-based polyol for the synthesis of polyurethane foams. The polyol was analyzed using wet chemical techniques to obtain hydroxyl number and viscosity. Infrared spectroscopy and gel permeation chromatography were used to confirm the structural properties of the foams. Flame-retardant polyurethane foams were prepared by the addition of different concentrations of dimethyl methyl phosphonate (DMMP) in final foam composition. The effect of DMMP on the thermo-mechanical properties of the polyurethane foams was analyzed. The TGA analysis showed improved stability of the final char with addition of DMMP in the foams. All the foams maintained a well-defined cellular structure and over 95% of closed cell content. The horizontal burning test showed reduced burning time and weight loss from 115 s and 38 wt.% for the neat foams, to 3.5 s and 5.5 wt.% for DMMP-containing foams (1.94 wt.% P). The combustion test using cone calorimeter showed a considerable reduction in heat release rate and total heat release. Thus, our study shows that corn-oil based polyol can be used to produce renewable polyol for industrially producible rigid polyurethane foams. The addition of a small amount of DMMP could result in a significant reduction in the flame-retardant properties of the polyurethane foams. |
| first_indexed | 2024-04-13T14:36:10Z |
| format | Article |
| id | doaj.art-868d728492cd4e4f9a77a57abccb5784 |
| institution | Directory Open Access Journal |
| issn | 2311-5629 |
| language | English |
| last_indexed | 2024-04-13T14:36:10Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | C |
| spelling | doaj.art-868d728492cd4e4f9a77a57abccb57842022-12-22T02:43:02ZengMDPI AGC2311-56292019-03-01511310.3390/c5010013c5010013Novel Biobased Polyol Using Corn Oil for Highly Flame-Retardant Polyurethane FoamsSneha Ramanujam0Camila Zequine1Sanket Bhoyate2Brooks Neria3Pawan K. Kahol4Ram K. Gupta5Department of Chemistry, Pittsburg State University, Pittsburg, KS 66762, USADepartment of Chemistry, Pittsburg State University, Pittsburg, KS 66762, USADepartment of Chemistry, Pittsburg State University, Pittsburg, KS 66762, USADepartment of Chemistry, Pittsburg State University, Pittsburg, KS 66762, USADepartment of Physics, Pittsburg State University, Pittsburg, KS 66762, USADepartment of Chemistry, Pittsburg State University, Pittsburg, KS 66762, USAA novel bio-based polyol was synthesized using corn oil and 2-mercaptoethanol via thiol-ene reaction as an alternative to petroleum-based polyol for the synthesis of polyurethane foams. The polyol was analyzed using wet chemical techniques to obtain hydroxyl number and viscosity. Infrared spectroscopy and gel permeation chromatography were used to confirm the structural properties of the foams. Flame-retardant polyurethane foams were prepared by the addition of different concentrations of dimethyl methyl phosphonate (DMMP) in final foam composition. The effect of DMMP on the thermo-mechanical properties of the polyurethane foams was analyzed. The TGA analysis showed improved stability of the final char with addition of DMMP in the foams. All the foams maintained a well-defined cellular structure and over 95% of closed cell content. The horizontal burning test showed reduced burning time and weight loss from 115 s and 38 wt.% for the neat foams, to 3.5 s and 5.5 wt.% for DMMP-containing foams (1.94 wt.% P). The combustion test using cone calorimeter showed a considerable reduction in heat release rate and total heat release. Thus, our study shows that corn-oil based polyol can be used to produce renewable polyol for industrially producible rigid polyurethane foams. The addition of a small amount of DMMP could result in a significant reduction in the flame-retardant properties of the polyurethane foams.http://www.mdpi.com/2311-5629/5/1/13biobased polyolthiol-ene chemistryflame-retardant polyurethane foamsthermal insulation |
| spellingShingle | Sneha Ramanujam Camila Zequine Sanket Bhoyate Brooks Neria Pawan K. Kahol Ram K. Gupta Novel Biobased Polyol Using Corn Oil for Highly Flame-Retardant Polyurethane Foams C biobased polyol thiol-ene chemistry flame-retardant polyurethane foams thermal insulation |
| title | Novel Biobased Polyol Using Corn Oil for Highly Flame-Retardant Polyurethane Foams |
| title_full | Novel Biobased Polyol Using Corn Oil for Highly Flame-Retardant Polyurethane Foams |
| title_fullStr | Novel Biobased Polyol Using Corn Oil for Highly Flame-Retardant Polyurethane Foams |
| title_full_unstemmed | Novel Biobased Polyol Using Corn Oil for Highly Flame-Retardant Polyurethane Foams |
| title_short | Novel Biobased Polyol Using Corn Oil for Highly Flame-Retardant Polyurethane Foams |
| title_sort | novel biobased polyol using corn oil for highly flame retardant polyurethane foams |
| topic | biobased polyol thiol-ene chemistry flame-retardant polyurethane foams thermal insulation |
| url | http://www.mdpi.com/2311-5629/5/1/13 |
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