The dispersants effect on physical properties of long-lasting luminescent polypropylene

Shin Cheng Jang, Yao Chi Shu, Fu Sheng Chuang, Wen Chin Tsen, Jing Dong Chow, Chien Chung Chen

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Two series of blends, O-PP 15 and O-PP 35, were prepared by mixing polypropylene (PP), luminescent powders (SrAl 2O 4: Eu 2+, Dy 3+) of 15 and 35 μm average particle diameter, and hydrophobic dispersant at about 190°C in the Brabender mixer. The effect of amounts and diameter of luminescent powders on the physical properties of PP material were discussed herein. The luminescence and afterglow time tests indicated that the initial luminescence of all blends increased with the luminescent powders amounts. O-PP 35 blends showed lower afterglow luminance than O-PP 15 blends at low luminescent powder amounts. The melting and crystallization temperatures of the blends appeared at 152-168°C and 87-103°C, respectively. The blends displayed peaks attributable to a α crystal structure at 2θ = 18°-19°. The β crystal structure was only evident from its characteristic 2θ peak at 15°-16° in the WAXD pattern of the O-PP 35 blends with high luminescent powder amounts. All of the blends had lower tensile strengths. However, the improvement in the luminescent powder distribution was evident from the SEM images after adding hydrophobic dispersant.

Original languageEnglish
Pages (from-to)4645-4654
Number of pages10
JournalJournal of Applied Polymer Science
Issue number6
Publication statusPublished - Jun 15 2012


  • afterglow
  • dispersant
  • luminescence
  • polypropylene

ASJC Scopus subject areas

  • General Chemistry
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Polymers and Plastics


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