Use of gradient, critical, and two-dimensional chromatography in the analysis of styrene- and methyl methacrylate-grafted epoxidized natural rubber

S.M. Graef, A.J.P. Zyl, van, R.D. Sanderson, B. Klumperman, H. Pasch

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22 Citations (Scopus)
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Abstract

The growing no. of heterogeneous polymeric species that are being synthesized places increasing demands on existing anal. techniques. Although size-exclusion chromatog. (SEC) has established itself as a powerful anal. tool, it has its limits when complex polymers, e.g., graft copolymers, must be analyzed. In this case, complementary techniques such as gradient HPLC and liq. chromatog. at crit. conditions (LCCC) are more favorable. The present study describes the synthesis and anal. of Me methacrylate- and styrene-grafted epoxidized natural rubber by different chromatog. techniques. The grafting efficiency was evaluated by gradient HPLC under normal and reversed phase conditions. Me methacrylate-grafted ENR50 was further analyzed by LCCC, where sepn. of the rubber and grafted rubber occurred according to chem. compn. but was independent of the molar mass of the Me methacrylate homopolymers. This was followed by the combination of LCCC and SEC, where sepn. was achieved in two dimensions. Relevant deductions were made of both the chem. compn. distribution and the molar mass distribution of the functional groups of Me methacrylate-grafted ENR50. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)2530-2538
JournalJournal of Applied Polymer Science
Volume88
Issue number10
DOIs
Publication statusPublished - 2003

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