Surface functionalization of polymer latex particles. II. Catalytic oxidation of poly(methylstyrene) latexes in the presence of cetyltrimethylammonium bromide

Pei Li, Jiang Hong Liu, Ting Kwok Wong, Hak Ping Yiu, Jun Gau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)


Surface-functionalized cationic poly(methylstyrene) (PMS) latex particles containing aldehyde and carboxylic acid groups were successfully achieved via an emulsion polymerization of 3 (4)-methylstyrene in the presence of cetyltrimethylammonium bromide, followed by an in-situ oxidation catalyzed by copper chloride and tert-butyl hydroperoxide (t-BuOOH ). Factors such as the type of metal catalyst, oxidant, and their concentration strongly affected the rate of oxidation. Step addition of t-BuOOH resulted in both a higher degree of oxidation and a more uniform distribution of particle size of the functionalized PMS as compared to the batch addition method. The effect of organic solvent was found to be insignificant, and the oxidation could still proceed in its absence. The particle sizes increased significantly during the oxidation but could be controlled by using crosslinked PMS latexes. Finally, the versatility of this oxidation process was demonstrated by oxidation of the polymer with a solid loading as high as 28%.
Original languageEnglish
Pages (from-to)3585-3593
Number of pages9
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Issue number16
Publication statusPublished - 30 Nov 1997


  • Catalytic oxidation
  • Functional latex particles
  • Poly (methylstyrene)

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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