STRUCTURE/GLASS TRANSITION TEMPERATURE RELATIONSHIP OF PVAC-B-POLY(MA-CO-MMA) TERPOLYMERS WITH THEORETICAL AND TOPOLOGICAL METHODS

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ROSTAMI DARONKOLA M.R.; SEMSARZADEH M.A.

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Journal: IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY Year:2010 | Volume:23 | Issue:2 (ISSUE NO. 106) Page(s): 133-144

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Title

STRUCTURE/GLASS TRANSITION TEMPERATURE RELATIONSHIP OF PVAC-B-POLY(MA-CO-MMA) TERPOLYMERS WITH THEORETICAL AND TOPOLOGICAL METHODS

Author(s)

ROSTAMI DARONKOLA M.R. | SEMSARZADEH M.A.

Keywords

TOPOLOGYQ3

GLASS TRANSITION TEMPERATUREQ2

THEORETICAL MODELQ3

METHYL ACRYLATEQ3

METHYL METHACRYLATEQ3

Abstract

The glass transition temperature of several PVAc (1)-b -poly(MA- co -MMA) (2) terpolymers with different fractions of methyl acrylate (MA) and methyl methacrylate (MMA) repeating units in random copolymer (block 2) were calculated with Barton, Kwei and topological equations. The calculation was on the basis of the correlation between the fraction of repeating units in random copolymers and theoretical equations and linear correlation of topological index of VAc, MA and MMA atomic structures in topological equations. The experimental values of the glass transition temperature of block 2 show a positive deviation from linearity in both Barton and Kwei theoretically calculated values. Therefore, agreement between the theoretical and experimental values were reached with summation of the effects of sequence distributions in random copolymer (R, calculated with1H NMR and statistical methods) to the linear theoretical data in Barton equation and the effect of interactions between the copolymer chains in Kwei equation (q=14.9). The glass transition temperature of 308 K was calculated for PVAc block with topological equation and it was near to the experimental value (310 K). Furthermore, the calculated glass transition temperatures of the block 2 with linear method were considerably close to the experimentally obtained data and increased with mole fraction of MMA in random copolymer.

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APA: Copy

ROSTAMI DARONKOLA, M.R., & SEMSARZADEH, M.A.. (2010). STRUCTURE/GLASS TRANSITION TEMPERATURE RELATIONSHIP OF PVAC-B-POLY(MA-CO-MMA) TERPOLYMERS WITH THEORETICAL AND TOPOLOGICAL METHODS. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 23(2 (ISSUE NO. 106)), 133-144. SID. https://sid.ir/paper/6166/en

Vancouver: Copy

ROSTAMI DARONKOLA M.R., SEMSARZADEH M.A.. STRUCTURE/GLASS TRANSITION TEMPERATURE RELATIONSHIP OF PVAC-B-POLY(MA-CO-MMA) TERPOLYMERS WITH THEORETICAL AND TOPOLOGICAL METHODS. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2010;23(2 (ISSUE NO. 106)):133-144. Available from: https://sid.ir/paper/6166/en

IEEE: Copy

M.R. ROSTAMI DARONKOLA, and M.A. SEMSARZADEH, “STRUCTURE/GLASS TRANSITION TEMPERATURE RELATIONSHIP OF PVAC-B-POLY(MA-CO-MMA) TERPOLYMERS WITH THEORETICAL AND TOPOLOGICAL METHODS,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 23, no. 2 (ISSUE NO. 106), pp. 133–144, 2010, [Online]. Available: https://sid.ir/paper/6166/en

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