Modeling a system of phosphated cross-linked high amylose for controlled drug release. Part 1: Synthesis and polymer characterization
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Elsevier B.V.
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High amylose was cross-linked with sodium trimetaphosphate (STMP) using 2% and 4% solutions of NaOH at room temperature with reaction contact times of 0.5, 1, 2 and 4 h. The different polymers obtained were analyzed by FT IR, C-13 and P-31 solid state NMR, SEM and C, H and P elemental analysis. The results were used to propose a two-stage mechanism for phosphate incorporation, the first being kinetically controlled. (C) 2008 Elsevier Ltd. All rights reserved.
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high amylose, cross-linking, sodium trimetaphosphate, reaction kinetics
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Inglês
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Reactive & Functional Polymers. Amsterdam: Elsevier B.V., v. 68, n. 8, p. 1200-1206, 2008.
