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Title: Evidence of plasma‐driven decomposition of common plastics exposed to an atmospheric nonthermal discharge

Journal Article · · Plasma Processes and Polymers
ORCiD logo [1];  [2];  [3];  [1]
  1. University of Michigan, Ann Arbor, MI (United States)
  2. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
  3. Rutgers University, NJ (United States)

A nonthermal, pulsed spark discharge is applied to three polymer powders in Ar and Ar–H2 gas mixtures. Hydrogen is introduced to assess plasma-driven decomposition. Gaseous decomposition products, including methane, acetylene, and ethylene, are observed with Fourier-transform infrared (FTIR). Surface modifications are observed on the residual polymer via attenuated total internal reflection-FTIR. Time-averaged rotational, vibrational, and excitation temperatures are characterized in the discharge. The plasma density is found to be around 3 x 1022 m-3, with rotational and vibrational temperatures ranging from 1500 to 2200 K and an excitation temperature of 1–2 eV. While spark properties did not change with either gas composition or polymer composition, it was determined that the addition of hydrogen promoted higher concentrations of gaseous phase products (promoting hydrogenolysis).

Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States); Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE; National Science Foundation (NSF)
Grant/Contract Number:
AC02-09CH11466; SC0022189; DGE-1841052
OSTI ID:
2251526
Alternate ID(s):
OSTI ID: 2263382; OSTI ID: 2282136; OSTI ID: 2328614
Journal Information:
Plasma Processes and Polymers, Vol. 21, Issue 5; ISSN 1612-8850
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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