Methods for predicting the quality of nylon 612 filament for use as a bristle material

H. Ralph Rawls, Robert Casella, Verne Backus, Robert Dill

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Splaying and curling of bristles is a very important performance characteristic of nylon toothbrushes. For this reason, analytical methods are needed that correlate fundamental physical–chemical properties with the eventural development of bristle splaying. Differential scanning calorimetry, thermogravimetric analysis, and wide‐angle X‐ray diffraction were each found to identify subtle differences in nylon 612 filament that had been subjected to varying processing conditions during manufacture. These differences were found to be related to water absorption and crystalline perfection and could be correlated with the characteristics of toothbrush wear. From the results, it was concluded that these three methods can be used for quality control and research purposes to predict and to study end‐use performance factors such as bristle splaying. © 1992 John Wiley & Sons, Inc.

Original languageEnglish (US)
Pages (from-to)1369-1374
Number of pages6
JournalJournal of Applied Polymer Science
Issue number8
StatePublished - Nov 15 1992

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry


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