Effect of the copolycondensation temperature on the reactivities of bis(3-hydroxypropyl)terephthalate and bis(2-hydroxyethyl)terephthalate

Won Sik Yoon; Won Seok Lyoo; Han Do Ghim; Jinwon Lee; Joon Ho Kim; Sam Soo Kim

doi:10.1002/app.12384

Effect of the copolycondensation temperature on the reactivities of bis(3-hydroxypropyl)terephthalate and bis(2-hydroxyethyl)terephthalate

Won Sik Yoon, Won Seok Lyoo, Han Do Ghim, Jinwon Lee, Joon Ho Kim, Sam Soo Kim

Department of Textile System Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The rate constants of cross reactions in the copolycondensation of bis(3-hydroxypropyl)terephthalate (BHPT) and bis(2-hydroxyethyl)terephthalate (BHET), k₁₂ and k₂₁, were determined with the results obtained from ¹H NMR spectroscopy analysis. BHPT and BHET were polymerized and copolymerized at 260, 270, and 280°C with titanium tetrabutoxide as a catalyst. With the adoption of second-order kinetics to the polycondensation, k₁₁ and k₂₂ were calculated. The monomer reactivity ratios of BHPT were much larger than those of BHET, indicating the block nature of the copolycondensation, but the difference between the reactivity ratios was lowest at the highest polycondensation temperature of 280°C. This indicated that the probability of randomization was increased.

Original language	English
Pages (from-to)	1890-1895
Number of pages	6
Journal	Journal of Applied Polymer Science
Volume	89
Issue number	7
DOIs	https://doi.org/10.1002/app.12384
State	Published - 15 Aug 2003

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title = "Effect of the copolycondensation temperature on the reactivities of bis(3-hydroxypropyl)terephthalate and bis(2-hydroxyethyl)terephthalate",

abstract = "The rate constants of cross reactions in the copolycondensation of bis(3-hydroxypropyl)terephthalate (BHPT) and bis(2-hydroxyethyl)terephthalate (BHET), k12 and k21, were determined with the results obtained from 1H NMR spectroscopy analysis. BHPT and BHET were polymerized and copolymerized at 260, 270, and 280°C with titanium tetrabutoxide as a catalyst. With the adoption of second-order kinetics to the polycondensation, k11 and k22 were calculated. The monomer reactivity ratios of BHPT were much larger than those of BHET, indicating the block nature of the copolycondensation, but the difference between the reactivity ratios was lowest at the highest polycondensation temperature of 280°C. This indicated that the probability of randomization was increased.",

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AU - Yoon, Won Sik

AU - Lyoo, Won Seok

AU - Ghim, Han Do

AU - Lee, Jinwon

AU - Kim, Joon Ho

AU - Kim, Sam Soo

PY - 2003/8/15

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N2 - The rate constants of cross reactions in the copolycondensation of bis(3-hydroxypropyl)terephthalate (BHPT) and bis(2-hydroxyethyl)terephthalate (BHET), k12 and k21, were determined with the results obtained from 1H NMR spectroscopy analysis. BHPT and BHET were polymerized and copolymerized at 260, 270, and 280°C with titanium tetrabutoxide as a catalyst. With the adoption of second-order kinetics to the polycondensation, k11 and k22 were calculated. The monomer reactivity ratios of BHPT were much larger than those of BHET, indicating the block nature of the copolycondensation, but the difference between the reactivity ratios was lowest at the highest polycondensation temperature of 280°C. This indicated that the probability of randomization was increased.

AB - The rate constants of cross reactions in the copolycondensation of bis(3-hydroxypropyl)terephthalate (BHPT) and bis(2-hydroxyethyl)terephthalate (BHET), k12 and k21, were determined with the results obtained from 1H NMR spectroscopy analysis. BHPT and BHET were polymerized and copolymerized at 260, 270, and 280°C with titanium tetrabutoxide as a catalyst. With the adoption of second-order kinetics to the polycondensation, k11 and k22 were calculated. The monomer reactivity ratios of BHPT were much larger than those of BHET, indicating the block nature of the copolycondensation, but the difference between the reactivity ratios was lowest at the highest polycondensation temperature of 280°C. This indicated that the probability of randomization was increased.

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Effect of the copolycondensation temperature on the reactivities of bis(3-hydroxypropyl)terephthalate and bis(2-hydroxyethyl)terephthalate

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