A mathematical model for a continuous direct esterification reactor has been developed. The solid-liquid equilibrium of terephthalic acid (TPA) was considered in our modeling, and the characteristic dissolution time, an adjustable parameter, was introduced to account for the mass-transfer effect in
Analysis of the esterification process for poly(ethylene terephthalate)
β Scribed by Young-Cheol Ahn; Soo-Myung Choi
- Publisher
- The Polymer Society of Korea
- Year
- 2003
- Tongue
- English
- Weight
- 289 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1598-5032
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
A comprehensive kinetic model for a semibatch direct esterification reactor has been developed. The solid-liquid equilibrium of terephthalic acid was considered in the modeling. Effects of the monomer feed ratio, reaction temperatures, and oligomer addition on the conversion, degree of polymerizatio
## Abstract Near infrared (NIR) reflectance spectra recorded from poly(ethylene terephthalate) (PET) chips contain a sufficient amount of information to estimate the number of carboxylic end groups and the relative viscosity. To obtain reliable results, careful attention has to be paid to the calib
## Abstract Near infrared (NIR) transmission spectra recorded from poly(ethylene trerephthalate) (PET) melt contain a sufficient amount of information to estimate the number of carboxylic end groups and the relative viscosity. Inβline monitoring of these quality parameters is feasible.
Poly(ethylene terephthalate) modified with l,l,l-trishydroxymethyl propane (THP) and pentaerythritol was analyzed with respect to branching by combined GPC/viscometry measurements. The average effective functionality of the branching molecules was calculated and compared with the theoretically attai
After investigating kinetics of the UV photodegradation of PET film samples having a thickness of 4.4 m, we found that the photodegradation process takes place in two steps: a very rapid initial step followed by a normal step. This phenomenon is explained by using a concept of "weak links." We have