Sulfonation of Nylon-6 by Solid Phase Reaction
Sulfonation of nylon-6 has been widely studied via solution phase reaction processes, which involve dissolution of the base polymer in a strong solvent. In this paper, novel solid phase reaction technology was adopted to induce the addition of the sulfonate side chain onto the backbone of nylon-6 using 1,3-propane sultone. The reaction of the polymer with the reagent, which was catalysed by dimsyl anions, was carried out at 65°C in a specially designed, well-mixed reactor. The reaction materials remained as free-flowing powders through the process. A sulfonate level of 1.32 mol% was achieved. The conversion of the 1,3-propane sultone was 23.3%. The sulfonation was qualitatively identified with FTi.r. and d.s.c. Its sulfonate level was determined by quantitative measurement of sulfur and nitrogen content of the treated polymer.
S. Kwak and S. Lee, "Sulfonation of Nylon-6 by Solid Phase Reaction," Polymer, Elsevier, Jan 1994.
The definitive version is available at http://dx.doi.org/10.1016/0032-3861(94)91000-6
Chemical and Biochemical Engineering
Keywords and Phrases
Solid Phase Reaction; Sulfonation; Nylon-6
Article - Journal
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