Utilization of Dimethyl Methylphosphonate (DMMP) as an Effective Flame Retardant in Hemp Seed Oil-Based Bio-Polyol for Rigid Polyurethane Foams
Category
Sciences and Technology
Department
Material Science
Student Status
Graduate
Research Advisor
Dr. Ram K. Gupta
Document Type
Event
Location
Sunflower
Start Date
10-4-2025 9:50 AM
End Date
10-4-2025 10:10 AM
Description
A novel hemp seed oil-based polyol was synthesized via epoxidation and ring opening of crude hemp seed oil (HSO). The successful synthesis of polyol was characterized by running several confirmatory tests such as FTIR, hydroxyl value, and acid value. The results attested to the synthesis of polyol, which was used to produce rigid polyurethane foams (RPUF) by composing polyol, hardener, catalyst, blowing agent, and DMMP flame-retardant additive in the form of Liquid with increasing concentrations. In addition to this, the majority of RPUF presented a closed-cell content greater than 65%. Also, significant improvement in flame retardancy was recorded as the neat HSO-based RPUF had a burning time of 104 seconds and a weight loss of 81.57%. Yet, adding 10 wt.% of DMMP was reduced to 13 seconds, and weight loss was 3 wt.%, respectively. Hence, our study was successful in manufacturing biobased RPUFs. Additionally, further research can be done to improve the properties of the hemp seed oil foams that are produced, which can likely be used commercially for consumer and income generation needs.
Utilization of Dimethyl Methylphosphonate (DMMP) as an Effective Flame Retardant in Hemp Seed Oil-Based Bio-Polyol for Rigid Polyurethane Foams
Sunflower
A novel hemp seed oil-based polyol was synthesized via epoxidation and ring opening of crude hemp seed oil (HSO). The successful synthesis of polyol was characterized by running several confirmatory tests such as FTIR, hydroxyl value, and acid value. The results attested to the synthesis of polyol, which was used to produce rigid polyurethane foams (RPUF) by composing polyol, hardener, catalyst, blowing agent, and DMMP flame-retardant additive in the form of Liquid with increasing concentrations. In addition to this, the majority of RPUF presented a closed-cell content greater than 65%. Also, significant improvement in flame retardancy was recorded as the neat HSO-based RPUF had a burning time of 104 seconds and a weight loss of 81.57%. Yet, adding 10 wt.% of DMMP was reduced to 13 seconds, and weight loss was 3 wt.%, respectively. Hence, our study was successful in manufacturing biobased RPUFs. Additionally, further research can be done to improve the properties of the hemp seed oil foams that are produced, which can likely be used commercially for consumer and income generation needs.
