DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Multiscale Strategy for Predicting Radiation Chemistry in Polymers

Journal Article · · Journal of Chemical Theory and Computation

A primary mode for radiation damage in polymers arises from ballistic electrons that induce electronic excitations, yet subsequent chemical mechanisms are poorly understood. We develop a multiscale strategy to predict this chemistry starting from subatomic scattering calculations. Nonadiabatic molecular dynamics simulations sample initial bond-breaking events following the most likely excitations, which feed into semiempirical simulations that approach chemical equilibrium. Application to polyethylene reveals a mechanism explaining the low propensity to cross-link in crystalline samples.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1994025
Report Number(s):
LLNL-JRNL-834986; 1053702
Journal Information:
Journal of Chemical Theory and Computation, Journal Name: Journal of Chemical Theory and Computation Journal Issue: 9 Vol. 18; ISSN 1549-9618
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (63)

Zur Theorie des Durchgangs schneller Elektronen durch Materie journal January 1932
Temperature Dependence of Structural Properties and Chain Configurational Study: A Molecular Dynamics Simulation of Polyethylene Chains journal April 2015
Effect of physical state during the electron irradiation of hydrocarbon polymers. Part I. The influence of physical state on reactions occurring in polyethylene during and following the irradiation journal November 1958
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
The Interaction of Radiation with Matter book January 2020
Relativistic collisions: The work of Christian M�ller in the early 1930s journal January 1992
M�ller scattering: a neglected application of early quantum electrodynamics journal January 1992
The influence of polarization functions on molecular orbital hydrogenation energies journal January 1973
Radiation damage and electron microscopy of organic polymers journal October 1974
Radiation effects in polyethylene and n-alkanes journal October 1981
Polymeric composite materials for radiation shielding: a review journal February 2021
Gamma Irradiation of Silicones journal April 2008
Crystal structure analysis of polyethylene with electron diffraction intensity data: Deconvolution of multiple scattering effects journal March 1983
Ion bombardment of polyethylene journal August 1995
3D inkjet-printed UV-curable inks for multi-functional electromagnetic applications journal January 2017
Optimization algorithm for the generation of ONCV pseudopotentials journal November 2015
Extensive TD-DFT investigation of the first electronic transition in substituted azobenzenes journal November 2008
Coupling effects of gamma irradiation and absorbed moisture on silicone foam journal October 2020
Irradiation effects in high-density polyethylene journal October 2013
Comparison of low-energy β radiation effects in polyethylene and cellulose by molecular dynamics simulations journal May 2014
Overview of accelerated aging and polymer degradation kinetics for combined radiation-thermal environments journal August 2019
All-atomic and coarse-grained molecular dynamics investigation of deformation in semi-crystalline lamellar polyethylene journal September 2018
First Principles Nonadiabatic Excited-State Molecular Dynamics in NWChem journal August 2020
A Quantum-Based Approach to Predict Primary Radiation Damage in Polymeric Networks journal December 2020
Constitutive Model of Radiation Aging Effects in Filled Silicone Elastomers under Strain journal August 2021
Chemical Degradation Pathways in Siloxane Polymers Following Phenyl Excitations journal November 2018
High-Accuracy Semiempirical Quantum Models Based on a Minimal Training Set journal March 2022
Gamma Radiation Chemistry of Polydimethylsiloxane Foam in Radiation-Thermal Environments: Experiments and Simulations journal August 2021
UFF, a full periodic table force field for molecular mechanics and molecular dynamics simulations journal December 1992
The OPLS [optimized potentials for liquid simulations] potential functions for proteins, energy minimizations for crystals of cyclic peptides and crambin journal March 1988
Primary Radiation Defect Production in Polyethylene and Cellulose journal November 2012
Polymer degradation through chemical change: a quantum-based test of inferred reactions in irradiated polydimethylsiloxane journal January 2022
Quantum theory of electronic excitation and sputtering by transmission electron microscopy journal January 2023
Excitation Energy Transfer in Alkanes. I. Exciton Model journal March 1970
Excitation Energy Transfer in Alkanes. II. Experimental Demonstration journal March 1970
Excitation Energy Transfer in Alkanes. III. Radiation Chemistry of Alkane Polymers journal March 1970
Self‐Consistent Molecular‐Orbital Methods. IX. An Extended Gaussian‐Type Basis for Molecular‐Orbital Studies of Organic Molecules journal January 1971
Self—Consistent Molecular Orbital Methods. XII. Further Extensions of Gaussian—Type Basis Sets for Use in Molecular Orbital Studies of Organic Molecules journal March 1972
Experimental and Theoretical Study of Sigma‐Bond Electronic Transitions in Alkanes journal July 1967
Canonical sampling through velocity rescaling journal January 2007
Lagrangian formulation with dissipation of Born-Oppenheimer molecular dynamics using the density-functional tight-binding method journal July 2011
A unified formulation of the constant temperature molecular dynamics methods journal July 1984
Molecular dynamics with electronic transitions journal July 1990
Toward reliable density functional methods without adjustable parameters: The PBE0 model journal April 1999
Nonadiabatic excited-state molecular dynamics: Treatment of electronic decoherence journal June 2013
Molecular dynamics of polymer crystallization revisited: Crystallization from the melt and the glass in longer polyethylene journal August 2013
DFTB+, a software package for efficient approximate density functional theory based atomistic simulations journal March 2020
NWChem: Past, present, and future journal May 2020
LXXIX. The scattering of α and β particles by matter and the structure of the atom journal May 1911
QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials journal September 2009
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool journal December 2009
The Impact of Sterilization Method on Wear in Knee Arthroplasty journal January 1998
Thermal Properties of the Inhomogeneous Electron Gas journal March 1965
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Canonical dynamics: Equilibrium phase-space distributions journal March 1985
Special points for Brillouin-zone integrations journal June 1976
Self-consistent-charge density-functional tight-binding method for simulations of complex materials properties journal September 1998
Optimized norm-conserving Vanderbilt pseudopotentials journal August 2013
Controlled manipulation of elastomers with radiation: Insights from multiquantum nuclear-magnetic-resonance data and mechanical measurements journal March 2011
Radiation-induced mechanical property changes in filled rubber journal June 2011
Density-Functional Theory for Time-Dependent Systems journal March 1984
Generalized Gradient Approximation Made Simple journal October 1996
Chapter III. Standard Measurements of the Cobalt 60 Gamma Radiation journal January 1959