Segmental shadowing effect on ultraviolet depolymerization and resulting molecular weight distribution

Ezgi Erdogan, Nazmi Postacioglu, Ahmet Giz

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Ultraviolet degradation of polymers in dilute solutions is simulated. The resulting molecular weight distribution and polydispersity evolutions are calculated for good, theta and poor solvents. Simulations show that, when the effect of shadowing among chain segments is taken into account, chain scission is not completely random. The effect is subtle, but it is observable in poor and theta solvents, especially in the 1/Mn and the d(1/Mn)/dt versus time graphics. Shadowing magnifies the increase in the polydispersity, when a polymer sample with a narrow molecular weight distribution is irradiated.

Original languageEnglish
Title of host publicationProceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015
PublisherAvestia Publishing
ISBN (Print)9781927877173
Publication statusPublished - 2015
EventProceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015 - Barcelona, Spain
Duration: 20 Jul 201521 Jul 2015

Publication series

NameProceedings of the World Congress on Mechanical, Chemical, and Material Engineering
ISSN (Electronic)2369-8136

Conference

ConferenceProceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015
Country/TerritorySpain
CityBarcelona
Period20/07/1521/07/15

Bibliographical note

Publisher Copyright:
© Avestia Publishing, 2015.

Keywords

  • Kinetics
  • Molecular Weight Distribution
  • Polymer Degradation
  • Simulation
  • Ultraviolet Irradiation

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