PREPARATION OF POLYOXYMETHYLENE USING FORMALDEHYDE AND TRIOXANE

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ZOHURI G.; POURALI Z.; GHOLAMI MEHRAN

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Paper Information

Journal: Iranian Journal of Polymer Science and Technology Year:2005 | Volume:18 | Issue:2 (ISSUE NO. 76) Page(s): 115-120

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Title

PREPARATION OF POLYOXYMETHYLENE USING FORMALDEHYDE AND TRIOXANE

Author(s)

ZOHURI G. | POURALI Z. | GHOLAMI MEHRAN | Issue Writer Certificate

Keywords

POMQ4

FORMALDEHYDEQ4

TRIOXANEQ4

SOLUTION POLYMERIZATIONQ4

IONIC POLYMERIZATIONQ4

Abstract

Polyoxymethylene (POM) was prepared from FORMALDEHYDE and TRIOXANE using anionic and cationic methods, respectively. Preparation of diacetate and dietherate derivatives of the polymer was studied via acetylation and alkylation reactions. SOLUTION POLYMERIZATION of TRIOXANE using cyclohexane, toluene, methylene chloride and carbon tetrachloride shows more uniform polymer than the melt polymerization method. The optimum temperature for melt polymerization of TRIOXANE was 90-100°C. The melting temperature of the polymer was 170 to 182°C. BF3 OEt2 was used as initiator for the polymerization of TRIOXANE. The highest yield of polymer was obtained when cyclohexane was used and it showed the highest melting temperature as well. Increasing temperature from 25 to 60°C decreased the yield of the polymer obtained. The effects of temperature and initiator concentration on the polymerization were studied, while, prior to this, the effect of FORMALDEHYDE concentration (25 to 46%) and catalyst concentration on TRIOXANE preparation were investigated. An optimum value for both temperature (70°C) and catalyst concentration (8.8 x 10-2mmol) were obtained based on polymer yield.

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APA: Copy

ZOHURI, G., POURALI, Z., & GHOLAMI, MEHRAN. (2005). PREPARATION OF POLYOXYMETHYLENE USING FORMALDEHYDE AND TRIOXANE. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 18(2 (ISSUE NO. 76)), 115-120. SID. https://sid.ir/paper/6439/en

Vancouver: Copy

ZOHURI G., POURALI Z., GHOLAMI MEHRAN. PREPARATION OF POLYOXYMETHYLENE USING FORMALDEHYDE AND TRIOXANE. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2005;18(2 (ISSUE NO. 76)):115-120. Available from: https://sid.ir/paper/6439/en

IEEE: Copy

G. ZOHURI, Z. POURALI, and MEHRAN GHOLAMI, “PREPARATION OF POLYOXYMETHYLENE USING FORMALDEHYDE AND TRIOXANE,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 18, no. 2 (ISSUE NO. 76), pp. 115–120, 2005, [Online]. Available: https://sid.ir/paper/6439/en

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