IMPROVEMENT IN PURIFICATION METHOD OF A SYNTHESIZED CYCLIC DIMERIC LACTIDE

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AZIZI M.T.; GANJI FARIBA; VASHEGHANI FARAAHANI E.

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Journal Paper

Paper Information

Journal: Iranian Journal of Polymer Science and Technology Year:2008 | Volume:21 | Issue:3 (ISSUE NO. 95) Page(s): 251-257

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Information Journal Paper

Title

IMPROVEMENT IN PURIFICATION METHOD OF A SYNTHESIZED CYCLIC DIMERIC LACTIDE

Author(s)

AZIZI M.T. | GANJI FARIBA | VASHEGHANI FARAAHANI E. | Issue Writer Certificate

Keywords

LACTIDEQ3

POLY (LACTIC ACID)Q3

PURIFICATIONQ3

CRYSTALLIZATIONQ3

MELTING POINTQ3

Abstract

LACTIDE was synthesized by reverse polymerization of low molecular weight poly (lactic acid) with two different molecular weights: 1500 and 2500. Two different LACTIDE PURIFICATION processes such as: recrystallization in ethyl acetate and washing the crude LACTIDE with ether before recrystallization in ethyl acetate were evaluated. It has been demonstrated that increasing the molecular weight of poly(lactic acid) does not influence the production yield, MELTING POINT and optical rotation of LACTIDE. The washing of crude LACTIDE with ether and recrystallization in ethyl acetate can be carried out in a short period of time (within 1 day) at a high yield (35%) using less solvent. In contrast, the first PURIFICATION method gives lower (11%) production yield by using higher amount of solvent at longer time. It is also found that the PURIFICATION methods do not have any specific effect on the properties of LACTIDE.

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APA: Copy

AZIZI, M.T., GANJI, FARIBA, & VASHEGHANI FARAAHANI, E.. (2008). IMPROVEMENT IN PURIFICATION METHOD OF A SYNTHESIZED CYCLIC DIMERIC LACTIDE. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 21(3 (ISSUE NO. 95)), 251-257. SID. https://sid.ir/paper/6569/en

Vancouver: Copy

AZIZI M.T., GANJI FARIBA, VASHEGHANI FARAAHANI E.. IMPROVEMENT IN PURIFICATION METHOD OF A SYNTHESIZED CYCLIC DIMERIC LACTIDE. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2008;21(3 (ISSUE NO. 95)):251-257. Available from: https://sid.ir/paper/6569/en

IEEE: Copy

M.T. AZIZI, FARIBA GANJI, and E. VASHEGHANI FARAAHANI, “IMPROVEMENT IN PURIFICATION METHOD OF A SYNTHESIZED CYCLIC DIMERIC LACTIDE,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 21, no. 3 (ISSUE NO. 95), pp. 251–257, 2008, [Online]. Available: https://sid.ir/paper/6569/en

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