JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Preparation of Polyester from Wastepaper Liquefied by Ethylene Glycol
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : KSBB Journal
  • Volume 26, Issue 3,  2011, pp.193-198
  • Publisher : Korean Society for Biotechnology and Bioengineering
  • DOI : 10.7841/ksbbj.2011.26.3.193
 Title & Authors
Preparation of Polyester from Wastepaper Liquefied by Ethylene Glycol
Lee, Dong-Hun; Kim, Chang-Joon; Kim, Sung-Bae;
  PDF(new window)
 Abstract
Polyester was prepared through the esterification reaction between watsepaper liquefied by ethylene glycol and carboxylic acid. Liquefaction was carried out at the previously determined condition of 100 minutes, , and 3% sulfuric acid, and the hydroxyl value of the liquefied product was 411 mg KOH/g. In order to remove bubbles produced during the curing step, the method to introduce a slight nitrogen stream into reaction vessel and/or the method to preheat a polyester film at before curing step were used alone or in combination. But if curing temperature was , simple method to cure a film for 5 hours at without using both methods was found to be most effective. The polyesters prepared with various carboxylic acids showed significant different physical properties, and maleic acid was best among them. Also, the effect of reaction time and temperature, C/H (carboxyl group/hydroxyl group) ratio, and type of additive on the crosslinkage of polyester was investigated. Lithium hydroxide or citric acid as additive was used to enhance the crosslinkage of polyester and citric acid was proved to be much more effective than lithium hydroxide. The effect of reaction temperature on the crosslinkage was marginal, but the crosslinkage decreased above . The crosslinkage was 86% when the polyester was prepared at an optimum condition such as and 15 minutes of reaction condition, 1.5 of C/H ratio, and 5 hours of curing condition, and 10% addition of citric acid.
 Keywords
polyester;ethylene glycol;liquefaction;wastepaper;crosslinkage;
 Language
Korean
 Cited by
1.
Ethylene glycol을 사용한 폐지의 전처리공정에서 발생된 폐액으로부터 polyester 제조,이동헌;김창준;김성배;

KSBB Journal, 2012. vol.27. 1, pp.51-56 crossref(new window)
1.
Preparation of Polyester Using Waste Ethylene Glycol Generated from the Wastepaper Pretreatment Process, KSBB Journal, 2012, 27, 1, 51  crossref(new windwow)
 References
1.
Sanchez, Q. J. and C. A. Candona (2008) Trends in biotechnological production of fuel ethanol from different feedstocks. Bioresour. Technol. 99: 5270-5295. crossref(new window)

2.
Shiraishi, N., S. Onodera, M. Ohtani, and T. Masumoto (1985) Dissolution of etherified or esterified wood into polyhydric alcohols or bisphenol A and their application in preparing wooden polymeric materials. Mokuzai Gakkaishi 31: 418-420.

3.
Yao, Y., M. Yoshioka, and N. Shiraishi (1993) Combined liquefaction of wood and starch in a polyethylene glycol/glycerin blended solvent. Mokuzai Gakkaishi 39: 930-938.

4.
Wang, Y., J. Wu, Y. Wan, H. Lei, F. Yu, P. Chen, X. Lin, Y. Liu, and R. Ruan (2009) Liquefaction of corn stover using industrial biodiesel glycerol. Int. J. Agric. BioI. Eng. 2: 32-40.

5.
Shin, H. J., C.-J. Kim, and S. B. Kim (2009) Kinetic study of recycled newspaper liquefaction in polyol solvent. Biotechnol. Bioprocess Eng. 14: 349-353. crossref(new window)

6.
Yu, F., R. Ruan, X. Lin, Y. Liu, R. Fu, Y. Li, P. Chen, and Y. Gao (2006) Reaction kinetics of stover liquefaction in recycled stover polyol. Appl. Biochem. Biotechnol. 130: 563-573. crossref(new window)

7.
Lee, D. H., C.-J. Kim, and S. B. Kim (2010) Wastepaper liquefaction using ethylene glycol and polyester preparation from the liquefied wastepaper. KSBB J. 25: 251-258.

8.
Yamada, T. and H. Ono (1999) Rapid liquefaction of lignocellulosic waste by using ethylene carbonate. Bioresour. Technol. 70: 61-67. crossref(new window)

9.
Kurimoto, Y., M. Takeda, S. Doi, Y. Tamura, and H. Ono (2001) Network structures and thermal properties of polyurethane films prepared from liquefied wood. Bioresour. Technol. 77: 33-40. crossref(new window)

10.
Kurimoto, Y., A. Koizumi, S. Doi, Y. Tamura, and H. Ono (2001) Wood species effects on the characteristics of liquefied wood and the properties of polyurethane films prepared from the liquefied wood. Biomass Bioenergy 21: 381-390. crossref(new window)

11.
Lee, S.-H, Y. Teramoto, and N. Shiraishi (2002) Biodegradable polyurethane foam from liquefied waste paper and its thermal stability, biodegradability, and genotoxicity. J. Appl. Polymer Sci. 83: 1482-1489. crossref(new window)

12.
Xie, T. and F. Chen (2005) Fast liquefaction of bagasse in ethylenc carbonate and preparation of epoxy resin from the liquefied product. J. Appl. Polymer Sci. 98: 1961-1968. crossref(new window)

13.
Yu, F., Y. Liu, X. Pan, X. Lin, C. Liu, P. Chen, and R. Ruan(2006) Liquefaction of corn stover and preparation of polyester from liquefied polyol. Appl. Biochem. Biotechnol. 130: 574-585. crossref(new window)

14.
Kunaver, M., E. Jasiukaityte, N. Cuk, and J. T. Guthrie (2010) Liquefaction of wood, synthesis and characterization of liqueficd wood polyester derivatives. J. Appl. Poly. Sci. 115: 1265-1271. crossref(new window)

15.
Allcock, H. R. and F. W. Lampe (1981) Contemporary Polymer Chemistry. pp. 258-269. Prentice Hall, Englewood Cliffs, NJ. USA.

16.
Nicholson, J. W. (2006) The Chemistry of Polymers. pp. 59-61 Royal Society of chemistry, cambridge, UK.