1
|
Xu Q, Chow PS, Xi E, Marsh R, Gupta S, Gupta KM. Evaluation of polymer-preservative interactions for preservation efficacy: molecular dynamics simulation and QSAR approaches. NANOSCALE 2024; 16:17049-17063. [PMID: 39189358 DOI: 10.1039/d4nr02162b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
Preservatives are critical ingredients in various pharmaceutical and consumer products. In particular, a high efficacy preservative system is essential in enhancing the shelf-life and safety of these products. However, the development of such a preservative system heavily relies on experimental approaches. In this study, molecular dynamics (MD) simulation was complemented with quantitative structure-activity relationship (QSAR) modelling to comprehensively evaluate polymer-preservative interactions between three different polymers (polyethylene terephthalate, PET; polypropylene, PP; and cellulose) and a series of preservatives from the classes of aliphatic, aromatic, and organic acids. First, adsorption of preservatives onto polymer surfaces was simulated in an aqueous environment. The preservatives did not adhere to hydrophilic cellulose, but most preservatives were adsorbed by PET and PP in distinct configurations. Interaction energies (IEs) between the preservatives and the polymers generally increase from cellulose to PP and PET. The diffusion coefficients of preservatives are dependent on polymer nature, preservative structure, and their resulting molecular interactions. Linear and low molecular weight preservatives exhibit higher diffusion coefficients in polymers. For a particular preservative, diffusion coefficients increased in the order of cellulose < PET < PP. Finally, using MD properties and molecular descriptors of preservatives, QSAR models were developed to identify key descriptors of preservatives and predict their IEs and diffusion coefficients in polymers. This study demonstrates a computational approach for identifying critical materials properties, and predicting polymer-preservative molecular interactions in water. Such an approach streamlines the rational selection and design of high efficacy preservative systems for various pharmaceutical, food and cosmetic products. Furthermore, the integrated computational strategy also reduces trial-and-error experimental efforts, thereby accelerating the development of high efficacy preservative systems.
Collapse
Affiliation(s)
- Qisong Xu
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Republic of Singapore.
| | - Pui Shan Chow
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Republic of Singapore.
| | - Erte Xi
- Proctor & Gamble, Winton Hill Business Center, 6280 Center Hill Ave., Cincinnati, OH 45224, USA
| | - Randy Marsh
- Proctor & Gamble, Winton Hill Business Center, 6280 Center Hill Ave., Cincinnati, OH 45224, USA
| | - Shikar Gupta
- Procter & Gamble International Operations SA SG Branch, Singapore 138547, Singapore
| | - Krishna M Gupta
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Republic of Singapore.
| |
Collapse
|
2
|
Zheng W, Liu C, Wei X, Sun W, Zhao L. Molecular-level Swelling Behaviors of Poly (ethylene terephthalate) Glycolysis using Ionic Liquids as Catalyst. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
3
|
Sun F, Dedong H, Fei L, Weiqiang W, Zhaotao G, Zhuo Z. Molecular-level investigation of plasticization of polyethylene terephthalate (PET) in supercritical carbon dioxide via molecular dynamics simulation. ROYAL SOCIETY OPEN SCIENCE 2022; 9:220606. [PMID: 36016914 DOI: 10.5061/dryad.crjdfn35s] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/14/2022] [Indexed: 05/25/2023]
Abstract
The current study aims to use the molecular dynamics (MD) simulation method to discuss the glass transition behaviour and fractional free volume (FFV) of the pure polyethylene terephthalate (PET) and the plasticized PET induced by supercritical carbon dioxide (SC-CO2) sorption. The adsorption concentration reproduced through sorption relaxation cycles (SRC) was firstly estimated and in an order of magnitude with the known experimental results available in the reported literature. The FFV induced by SC-CO2 in PET polymer changes regularly, which is proportional to the capacity of SC-CO2 adsorption with the changes in temperature and pressure. The glass transition temperature (T g) was further estimated to be almost identical to the known experimental values and shows a gradually decreasing tendency with the increase of pressure. Meanwhile, the plasticization of PET polymer studied by radial distribution functions showed that CO2 molecules occupying the sorption sites on the PET backbone promoted plasticization by increasing the fluidity of the PET backbone chain.
Collapse
Affiliation(s)
- Fayu Sun
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Ministry of Education), National Experimental Teaching Demonstration Center for Mechanical Engineering, School of Mechanical Engineering, Shandong University, Jinan 250061, People's Republic of China
- Shanda-Lunan Research Institute of Supercritical Fluid Technology, Shandong University, Jinan 250061, People's Republic of China
| | - Hu Dedong
- Shanda-Lunan Research Institute of Supercritical Fluid Technology, Shandong University, Jinan 250061, People's Republic of China
- School of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, People's Republic of China
| | - Li Fei
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Ministry of Education), National Experimental Teaching Demonstration Center for Mechanical Engineering, School of Mechanical Engineering, Shandong University, Jinan 250061, People's Republic of China
- Shanda-Lunan Research Institute of Supercritical Fluid Technology, Shandong University, Jinan 250061, People's Republic of China
| | - Wang Weiqiang
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Ministry of Education), National Experimental Teaching Demonstration Center for Mechanical Engineering, School of Mechanical Engineering, Shandong University, Jinan 250061, People's Republic of China
- Shanda-Lunan Research Institute of Supercritical Fluid Technology, Shandong University, Jinan 250061, People's Republic of China
- School of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, People's Republic of China
| | - Gao Zhaotao
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Ministry of Education), National Experimental Teaching Demonstration Center for Mechanical Engineering, School of Mechanical Engineering, Shandong University, Jinan 250061, People's Republic of China
- Shanda-Lunan Research Institute of Supercritical Fluid Technology, Shandong University, Jinan 250061, People's Republic of China
| | - Zhang Zhuo
- School of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, People's Republic of China
| |
Collapse
|
4
|
Sun F, Dedong H, Fei L, Weiqiang W, Zhaotao G, Zhuo Z. Molecular-level investigation of plasticization of polyethylene terephthalate (PET) in supercritical carbon dioxide via molecular dynamics simulation. ROYAL SOCIETY OPEN SCIENCE 2022; 9:220606. [PMID: 36016914 PMCID: PMC9399702 DOI: 10.1098/rsos.220606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/14/2022] [Indexed: 05/10/2023]
Abstract
The current study aims to use the molecular dynamics (MD) simulation method to discuss the glass transition behaviour and fractional free volume (FFV) of the pure polyethylene terephthalate (PET) and the plasticized PET induced by supercritical carbon dioxide (SC-CO2) sorption. The adsorption concentration reproduced through sorption relaxation cycles (SRC) was firstly estimated and in an order of magnitude with the known experimental results available in the reported literature. The FFV induced by SC-CO2 in PET polymer changes regularly, which is proportional to the capacity of SC-CO2 adsorption with the changes in temperature and pressure. The glass transition temperature (T g) was further estimated to be almost identical to the known experimental values and shows a gradually decreasing tendency with the increase of pressure. Meanwhile, the plasticization of PET polymer studied by radial distribution functions showed that CO2 molecules occupying the sorption sites on the PET backbone promoted plasticization by increasing the fluidity of the PET backbone chain.
Collapse
Affiliation(s)
- Fayu Sun
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Ministry of Education), National Experimental Teaching Demonstration Center for Mechanical Engineering, School of Mechanical Engineering, Shandong University, Jinan 250061, People's Republic of China
- Shanda-Lunan Research Institute of Supercritical Fluid Technology, Shandong University, Jinan 250061, People's Republic of China
| | - Hu Dedong
- Shanda-Lunan Research Institute of Supercritical Fluid Technology, Shandong University, Jinan 250061, People's Republic of China
- School of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, People's Republic of China
| | - Li Fei
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Ministry of Education), National Experimental Teaching Demonstration Center for Mechanical Engineering, School of Mechanical Engineering, Shandong University, Jinan 250061, People's Republic of China
- Shanda-Lunan Research Institute of Supercritical Fluid Technology, Shandong University, Jinan 250061, People's Republic of China
| | - Wang Weiqiang
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Ministry of Education), National Experimental Teaching Demonstration Center for Mechanical Engineering, School of Mechanical Engineering, Shandong University, Jinan 250061, People's Republic of China
- Shanda-Lunan Research Institute of Supercritical Fluid Technology, Shandong University, Jinan 250061, People's Republic of China
- School of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, People's Republic of China
| | - Gao Zhaotao
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Ministry of Education), National Experimental Teaching Demonstration Center for Mechanical Engineering, School of Mechanical Engineering, Shandong University, Jinan 250061, People's Republic of China
- Shanda-Lunan Research Institute of Supercritical Fluid Technology, Shandong University, Jinan 250061, People's Republic of China
| | - Zhang Zhuo
- School of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, People's Republic of China
| |
Collapse
|