INVESTIGATING AND COMPARING THE TYPE AND THE EFFECT OF ALCOHOL AND CATALYST IN THE HYDROLYSIS OF ETHYLENEVINYL ACETATE COPOLYMER BY FTIR SPECTROSCOPY

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SALEHI H.; MASOUDI A.; SATARI VAFAEI A.H.

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Journal: Iranian Journal of Polymer Science and Technology Year:2006 | Volume:19 | Issue:1 (ISSUE NO. 81) Page(s): 67-76

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Title

INVESTIGATING AND COMPARING THE TYPE AND THE EFFECT OF ALCOHOL AND CATALYST IN THE HYDROLYSIS OF ETHYLENEVINYL ACETATE COPOLYMER BY FTIR SPECTROSCOPY

Author(s)

SALEHI H. | MASOUDI A. | SATARI VAFAEI A.H. | Issue Writer Certificate

Keywords

ETHYLENE-VINYL ACETATE COPOLYMERQ3

ETHYLENE-VINYL ALCOHOL COPOLYMERQ3

METHANOLQ4

ISOPROPANOLQ3

Abstract

Ethylene-vinyl alcohol (EVOH) copolymers were prepared by the hydrolysis of ETHYLENE-VINYL ACETATE COPOLYMERs. The conversion of acetoxy groups to hydroxy groups was performed using METHANOL and ISOPROPANOL as transesteri fication agents and sodium hydroxide and potassium hydroxide as basic catalysts. The Products of hydrolysis during the reaction including terpolymers of ethylene-vinyl acetate-vinyl alcohol were analyzed by FTIR spectroscopy. Changes in the absorptions of acetoxy, methylene, and hydroxy groups in vinyl acetate and vinyl alcohol units of ethylene- vinyl acetate copolymer and the products of the hydrolysis were followed by measuring the height or area of these peaks and their ratios as a tool to investigate the hydrolysis reaction. The results showed that the hydrolysis with METHANOL/sodium hydroxide system has a higher rate than that of ISOPROPANOL/potassium hydroxide and the final product has a higher degree of hydrolysis. Degree of hydrolysis of 99.8 and 93 percent were obtained using METHANOL/sodium hydroxide and ISOPROPANOL/potassium hydroxide media, respectively.

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APA: Copy

SALEHI, H., MASOUDI, A., SATARI VAFAEI, A.H.,. (2006). INVESTIGATING AND COMPARING THE TYPE AND THE EFFECT OF ALCOHOL AND CATALYST IN THE HYDROLYSIS OF ETHYLENEVINYL ACETATE COPOLYMER BY FTIR SPECTROSCOPY. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 19(1 (ISSUE NO. 81)), 67-76. SID. https://sid.ir/paper/6662/en

Vancouver: Copy

SALEHI H., MASOUDI A., SATARI VAFAEI A.H.. INVESTIGATING AND COMPARING THE TYPE AND THE EFFECT OF ALCOHOL AND CATALYST IN THE HYDROLYSIS OF ETHYLENEVINYL ACETATE COPOLYMER BY FTIR SPECTROSCOPY. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2006;19(1 (ISSUE NO. 81)):67-76. Available from: https://sid.ir/paper/6662/en

IEEE: Copy

H. SALEHI, A. MASOUDI, A.H. SATARI VAFAEI, an, “INVESTIGATING AND COMPARING THE TYPE AND THE EFFECT OF ALCOHOL AND CATALYST IN THE HYDROLYSIS OF ETHYLENEVINYL ACETATE COPOLYMER BY FTIR SPECTROSCOPY,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 19, no. 1 (ISSUE NO. 81), pp. 67–76, 2006, [Online]. Available: https://sid.ir/paper/6662/en

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