Characterization of Low‐Molecular‐Weight PLA using HPLC

Macromolecular Materials and Engineering - Tập 295 Số 1 - Trang 58-66 - 2010
Fabio Codari1, Davide Moscatelli2, Giuseppe Storti2, Massimo Morbidelli1
1Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
2Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy

Tóm tắt

AbstractHPLC is applied and assessed as an effective tool to investigate both the production of PLA by polycondensation and its corresponding degradation. A new HPLC calibration procedure, through which it is possible to fully characterize LMW PLA samples by determining the concentration of each individual oligomer, is developed. A comparison between HPLC, 1H NMR spectroscopy and non‐aqueous solution titration is also reported in order to confirm the reliability of the proposed method. Finally, the proposed analytical technique is applied to monitor the development of a polycondensation reaction performed at 150 °C and 133.3 mbar for 12 h.magnified image

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Thông tin
Thông tin xuất bản

Macromolecular Materials and Engineering

Tập 295 Số 1

58-66

Thông tin tác giả