Effects of pressure decay on Non-Methane Volatile Organic Compounds (NMVOC) species distribution in domestic aerosol sprays with LPG propellants

Abba, MK; Naeem, Zainab; Nourian, A; Nasr, GG

Abstract

Conventional aerosols sprays contain different Volatile Organic Compounds (VOC). These organic compounds have different properties and can have detrimental impact on air quality. This study investigated the spray performance and variation of the types of Non-Methane VOCs (NMVOCs) expelled over the life of pressurised aerosol spray can. Three types of aerosol sprays – hair sprays, deodorants, and antiperspirants were selected from the solvent-based cosmetic products. Mass Ratio (MR) of solvent (ethanol) to propellant (LPG) for all the products was analysed at pressure decay sequences of 4, 3, 2, and 1.5 bar. It was found that the MR in hair sprays expelled was significantly higher than that of antiperspirants and body sprays by 53% and 54% respectively at 4 bar. As the pressure depleted, however, the antiperspirant and body sprays’ MR decreased while that of the hair spray increased. At the lower pressures (2 bar), the hair spray had the highest MR and antiperspirant had the lowest. This finding is important in evaluating the performance of the delivery pathways of aerosol spray products and will provide insight into the effective design of atomisers with alternative “green” propellants like compressed air replacing LPG as the primary propellant in spray products.

Citation

Abba, M., Naeem, Z., Nourian, A., & Nasr, G. (2021). Effects of pressure decay on Non-Methane Volatile Organic Compounds (NMVOC) species distribution in domestic aerosol sprays with LPG propellants. . https://doi.org/10.2218/iclass.2021.5993

• Conference Name: ICLASS 2021, 15th Triennial International Conference on Liquid Atomization and Spray Systems
• Conference Location: Edinburgh, UK
• Start Date: Aug 29, 2021
• End Date: Sep 2, 2021
• Acceptance Date: Jul 1, 2021
• Publication Date: Aug 30, 2021
• Deposit Date: Sep 6, 2021
• Publicly Available Date: Sep 6, 2021
• DOI: https://doi.org/10.2218/iclass.2021.5993
• Publisher URL: https://doi.org/10.2218/iclass.2021.5993
• Related Public URLs: http://journals.ed.ac.uk/ICLASS_Edinburgh/index