Publications
Detailed Information
Fundamental modeling and experimental investigation of polymer washing batch process : 회분식 고분자 세척공정의 기초적 모델링 및 실험적 연구
Cited 0 time in
Web of Science
Cited 0 time in Scopus
- Authors
- Advisor
- 이종민
- Major
- 공과대학 화학생물공학부
- Issue Date
- 2016-02
- Publisher
- 서울대학교 대학원
- Keywords
- 고분자 세척 공정 ; 이동확산 경계면 ; 유사정상상태 가정 ; Sulfonated poly(aryl ether ketone)
- Description
- 학위논문 (석사)-- 서울대학교 대학원 : 화학생물공학부, 2016. 2. 이종민.
- Abstract
- After polymerization reaction, impurities composed of adduct, used solvent and catalyst remain inside the formed polymers. These impurities should be removed by washing to improve the purity of the polymers. In this process, the model of the polymer washing process is essential to optimize the energy, resources and operating time. This work proposes a fundamental model of polymer washing process to provide theoretical basis for optimization. The model describes the impurity distribution inside the polymers using pseudo steady state approximation with the concept of moving boundary of diffusion. Also, the impurity diffusion at polymer surface is described with Fick's law.
In addition, this work reports an experimental investigation of polymer washing process using SPAEK (sulfonated poly(aryl ether ketone)) samples. In the investigation, impurity diffusion coefficient at polymer surface of the experiment is computed from the pH data. The computed D have different values for each operation, as a lumped parameter. However these values show the same trajectory with the introduction of a dimensionless number Co for each operation. This means other impurity diffusion factors, not included in the model, embraced in D are only affected by Co, even if the initial impurity concentrations inside the polymers are different for each operation.
Finally, we predict the pH changes in a different experimental condition, and validate the prediction performance of the model.
- Language
- English
- Files in This Item:
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.