Impact grinding of thermoplastics: A size distribution function model

Janet L. Green, Charles A. Petty, Eric A. Grulke

Research output: Contribution to journalArticle

  • 2 Citations

Abstract

Separation of poly(ethylene terephthalate) (PET) from poly(vinyl chloride) (PVC) is an important problem when recycling bottles and other consumer products. Previous work has identified a processing window for the selective grinding of a mixture of PET and PVC. Impact grinding for conditions within the processing window will ensure that one polymer fails in the ductile mode and the other fails in the brittle mode, giving differences in sizes and shapes between the ground polymers. The ground mixture can be separated by physical means such as screening. This study develops size distribution models for the impact grinding of PET and PVC chips, an important tool for the operation and control of a selective grinding process. The distribution coefficients can be related to grinding conditions, and to the failure mechanism of the polymer.

LanguageEnglish (US)
Pages888-895
Number of pages8
JournalPolymer Engineering and Science
Volume37
Issue number5
StatePublished - 1997

Profile

Vinyl Chloride
Thermoplastics
Distribution functions
Polymers
Polyethylene Terephthalates
Consumer products
Bottles
Processing
Polyethylene terephthalates
Recycling
Screening

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Impact grinding of thermoplastics : A size distribution function model. / Green, Janet L.; Petty, Charles A.; Grulke, Eric A.

In: Polymer Engineering and Science, Vol. 37, No. 5, 1997, p. 888-895.

Research output: Contribution to journalArticle

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