Understanding the nucleation behavior of water in dilute polymeric solutions is quintessential for the development of suitable artificial ice recrystallization inhibition (IRI) agents. Although poly(vinyl alcohol) (PVA) is found to be one of the most potent biomimetic IRI agents, the molecular understanding of the nucleation behavior of water in the presence of PVA is still lacking. Here, we use molecular dynamics to elucidate the role of concentration, degree of supercooling, degree of polymerization, and amphiphilicity of PVA and PVA-like polymers on the homogeneous nucleation of water in dilute polymeric solutions using the seeding method. Using classical nucleation theory (CNT), our simulations indicate an increase in the chemical potential difference between ice and melt that favors ice nucleation. However, it also predicts a significant increase in the ice–melt interfacial energy that impedes nucleation. The relative increase in the interfacial energy dominates the increase in the chemical potential difference, which results in a decrease in the nucleation rate of water with an increase in the solute concentration. This study contradicts the previous simulation study that suggested the promotion of homogeneous ice nucleation by PVA and supports the experimental observations of the heterogeneous origins of ice nucleation. Our results also suggest the non-classical origins of ice nucleation in polymeric solutions and the limitation of the CNT in predicting heterogeneous ice nucleation in polymeric solutions.
Skip Nav Destination
Article navigation
28 July 2023
Research Article|
July 26 2023
Understanding the role of polymers on the nucleating behavior of water in dilute supercooled solutions
Aindrila Indra
;
Aindrila Indra
(Conceptualization, Formal analysis, Investigation, Methodology, Validation, Visualization, Writing – original draft)
1
Department of Chemical Engineering, Indian Institute of Technology
, Kanpur, Uttar Pradesh 208016, India
Search for other works by this author on:
Mangesh Bhendale
;
Mangesh Bhendale
(Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing – original draft)
1
Department of Chemical Engineering, Indian Institute of Technology
, Kanpur, Uttar Pradesh 208016, India
Search for other works by this author on:
Jayant K. Singh
Jayant K. Singh
a)
(Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing – original draft)
1
Department of Chemical Engineering, Indian Institute of Technology
, Kanpur, Uttar Pradesh 208016, India
2
Prescience Insilico Private Limited
, 5th Floor, Novel MSR Building, Marathalli, Bengaluru, Karnataka 560037, India
a)Author to whom correspondence should be addressed: jayantks@iitk.ac.in
Search for other works by this author on:
a)Author to whom correspondence should be addressed: jayantks@iitk.ac.in
J. Chem. Phys. 159, 044502 (2023)
Article history
Received:
April 11 2023
Accepted:
July 10 2023
Citation
Aindrila Indra, Mangesh Bhendale, Jayant K. Singh; Understanding the role of polymers on the nucleating behavior of water in dilute supercooled solutions. J. Chem. Phys. 28 July 2023; 159 (4): 044502. https://doi.org/10.1063/5.0153670
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Pay-Per-View Access
$40.00
Citing articles via
DeePMD-kit v2: A software package for deep potential models
Jinzhe Zeng, Duo Zhang, et al.