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Journal of Polymers
Table of Contents
Journal of Polymers
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2014
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Article
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Fig 1
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Research Article
Cyclic Oligolactic Acid in Direct Polycondensation PLLA and Its Extraction with Organic Solvent
Figure 1
1
H NMR spectra of (a) PLLA and (b) products extracted with methanol (r.t.) and (c) hexane (4°C).
(a)
(b)
(c)