Element analysis of the residues from PPS 9 indicated a decreasing trend of the carbon content, confirming a diminishing proportion of PPS oligomers during the desulfurizing chlorination process (Figure 4A ).
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Element analysis of the residues from PPS 9 indicated a decreasing trend of the carbon content, confirming a diminishing proportion of PPS oligomers during the desulfurizing chlorination process (Figure 4A ).