Preparation of sulfonated polypropylene and its dyeability: Thiol as a functionalization template of polypropylene

A two-step process has been invented to prepare sulfonated polypropylene from chlorinated polypropylene via thiolation and successive oxidation to enhance the dyeability of polypropylene. With a short thiolation reaction time of 3 h in an N-methyl-2-pyrrolidone solution, 1.7-20.5% sulfur can be incorporated into a polypropylene bulk effectively. Chlorine-thiol substitution and hydrosulfide conversion have been examined with elemental analysis, and their behaviors as a function of the SH/Cl ratio can be explained with an equilibrium model of hydrosulfide and accessible chlorine in a given timescale. Oxidation of thiol has been performed successfully with hydrogen peroxide. The evolution of oxidation intermediates such as sulfoxide, sulfone, sulfinic acid, and sulfonic acid can be identified by Raman and Fourier transform infrared analyses. Sulfonated polypropylene can be stained by a basic dye very effectively, and its dye uptake reaches 190 mmol of dye/kg of polymer for 3.6 mmol of sulfur/g of polymer. This dye uptake is 20 times more effective than that of chlorinated polypropylene on a molar basis. Thus, it is clear that a modification can be performed effectively to enhance the dyeability of polypropylene. (C) 2008 Wiley Periodicals, Inc.
Publisher
JOHN WILEY & SONS INC
Issue Date
2008-07
Language
ENG
Keywords

CONCENTRATED SULFURIC-ACID; GAS-PHASE SULFONATION; DISPERSE DYES; POLYMER SURFACES; FIBER; POLYETHYLENE; POLYSTYRENE; OXIDATION

Citation

JOURNAL OF APPLIED POLYMER SCIENCE, v.109, no.2, pp.736 - 748

ISSN
0021-8995
DOI
10.1002/app.28054
URI
http://hdl.handle.net/10203/5261
Appears in Collection
CBE-Journal Papers(저널논문)
  • Hit : 712
  • Download : 1
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button
⊙ Cited 11 items in WoSClick to see citing articles inrecords_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0