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Title: Dispersing nanoparticles in a polymer film via solvent evaporation

Journal Article · · ACS Macro Letters
 [1];  [2]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Large-scale molecular dynamics simulations are used to study the dispersion of nanoparticles (NPs) in a polymer film during solvent evaporation. As the solvent evaporates, a dense polymer-rich skin layer forms at the liquid/vapor interface, which is either NP rich or poor depending on the strength of the NP/polymer interaction. When the NPs are strongly wet by the polymer, the NPs accumulate at the interface and form layers. However, when the NPs are only partially wet by the polymer, most NPs are uniformly distributed in the bulk of the polymer film, with the dense skin layer serving as a barrier to prevent the NPs from moving to the interface. Furthermore, our results point to a possible route to employ less favorable NP/polymer interactions and fast solvent evaporation to uniformly disperse NPs in a polymer film, contrary to the common belief that strong NP/polymer attractions are needed to make NPs well dispersed in polymer nanocomposites.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1263596
Report Number(s):
SAND-2016-4785J; 644871
Journal Information:
ACS Macro Letters, Vol. 5, Issue 6; ISSN 2161-1653
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 82 works
Citation information provided by
Web of Science

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Cited By (17)

Local mass and energy transports in evaporation processes from a vapor-liquid interface in a slit pore based on molecular dynamics journal February 2018
Investigation on the effect of surface modification of 3D printed parts by nanoclay and dimethyl ketone journal September 2017
Cross Interaction Drives Stratification in Drying Film of Binary Colloidal Mixtures journal March 2017
Patterning polymer-filled nanoparticle films via leaching-enabled capillary rise infiltration (LeCaRI) journal January 2019
Initial Solvent-Driven Nonequilibrium Effect on Structure, Properties, and Dynamics of Polymer Nanocomposites journal October 2019
A critical and quantitative review of the stratification of particles during the drying of colloidal films journal January 2018
Anomalous Ostwald Ripening Enables 2D Polymer Crystals via Fast Evaporation journal November 2019
Networked Nanogels from Self-Assembly of End-Functionalized Polymers at the Vapor/Liquid Interface: Molecular Dynamics Simulations journal December 2018
Microstructures and mechanics in the colloidal film drying process journal January 2017
Influence of hydrodynamic interactions on stratification in drying mixtures journal July 2018
Ordering nanoparticles with polymer brushes journal December 2017
Stratification of mixtures in evaporating liquid films occurs only for a range of volume fractions of the smaller component journal April 2018
Blue- and green-emitting hydrophobic carbon dots: preparation, optical transition, and carbon dot-loading journal April 2019
Networked Nanogels from Self-Assembly of End-Functionalized Polymers at the Vapor/Liquid Interface: Molecular Dynamics Simulations journal March 2019
Ordering Nanoparticles with Polymer Brushes text January 2017
Stratification of mixtures in evaporating liquid films occurs only for a range of volume fractions of the smaller component text January 2018
Segregation in Drying Binary Colloidal Droplets journal March 2019

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