Effect of solvents on de-cross-linking of cross-linked polyethylene under subcritical and supercritical conditions

Hong Shik Lee, Ju Hyeong Jeong, Giyoung Hong, Hang Kyu Cho, Bum Ki Baek, Chong Min Koo, Soon Man Hong, Jaehoon Kim, Youn Woo Lee

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The effect of various solvents on the de-cross-linking reaction of cross-linked polyethylene under subcritical and supercritical conditions was studied. The gel content of the de-cross-linked polyethylene decreased from 60 to 0.8-2.5% at 380 °C within 5 min in all of the solvents tested in this study. When water, ethanol, and 2-propanol were used, the Mw of the de-cross-linked polyethylenes decreased from 349,000 to 200,000-227,000 g/mol, and much lower Mw values of 70,000-90,000 g/mol were observed when acetone and diisopropyl ether were used. The de-cross-linked polyethylenes treated in the different solvents had a very similar chemical structure to raw polyethylene. According to a kinetic study using a first-order reaction model, the de-cross-linking rate in each solvent increased in the order 2-propanol < ethanol < n-hexane < water < methanol ≪ diisopropyl ether ≪ acetone at 350 °C.

Original languageEnglish
Pages (from-to)6633-6638
Number of pages6
JournalIndustrial and Engineering Chemistry Research
Volume52
Issue number20
DOIs
Publication statusPublished - 2013 May 22
Externally publishedYes

Fingerprint

Polyethylene
Polyethylenes
2-Propanol
Acetone
Propanol
Ethanol
Ethers
Water
Methanol
Hexane
Gels
Kinetics
diisopropyl ether

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Effect of solvents on de-cross-linking of cross-linked polyethylene under subcritical and supercritical conditions. / Lee, Hong Shik; Jeong, Ju Hyeong; Hong, Giyoung; Cho, Hang Kyu; Baek, Bum Ki; Koo, Chong Min; Hong, Soon Man; Kim, Jaehoon; Lee, Youn Woo.

In: Industrial and Engineering Chemistry Research, Vol. 52, No. 20, 22.05.2013, p. 6633-6638.

Research output: Contribution to journalArticle

Lee, Hong Shik ; Jeong, Ju Hyeong ; Hong, Giyoung ; Cho, Hang Kyu ; Baek, Bum Ki ; Koo, Chong Min ; Hong, Soon Man ; Kim, Jaehoon ; Lee, Youn Woo. / Effect of solvents on de-cross-linking of cross-linked polyethylene under subcritical and supercritical conditions. In: Industrial and Engineering Chemistry Research. 2013 ; Vol. 52, No. 20. pp. 6633-6638.
@article{c6493508281e4f908e9d3e853214f5ef,
title = "Effect of solvents on de-cross-linking of cross-linked polyethylene under subcritical and supercritical conditions",
abstract = "The effect of various solvents on the de-cross-linking reaction of cross-linked polyethylene under subcritical and supercritical conditions was studied. The gel content of the de-cross-linked polyethylene decreased from 60 to 0.8-2.5{\%} at 380 °C within 5 min in all of the solvents tested in this study. When water, ethanol, and 2-propanol were used, the Mw of the de-cross-linked polyethylenes decreased from 349,000 to 200,000-227,000 g/mol, and much lower Mw values of 70,000-90,000 g/mol were observed when acetone and diisopropyl ether were used. The de-cross-linked polyethylenes treated in the different solvents had a very similar chemical structure to raw polyethylene. According to a kinetic study using a first-order reaction model, the de-cross-linking rate in each solvent increased in the order 2-propanol < ethanol < n-hexane < water < methanol ≪ diisopropyl ether ≪ acetone at 350 °C.",
author = "Lee, {Hong Shik} and Jeong, {Ju Hyeong} and Giyoung Hong and Cho, {Hang Kyu} and Baek, {Bum Ki} and Koo, {Chong Min} and Hong, {Soon Man} and Jaehoon Kim and Lee, {Youn Woo}",
year = "2013",
month = "5",
day = "22",
doi = "10.1021/ie4006194",
language = "English",
volume = "52",
pages = "6633--6638",
journal = "Industrial & Engineering Chemistry Research",
issn = "0888-5885",
publisher = "American Chemical Society",
number = "20",

}

TY - JOUR

T1 - Effect of solvents on de-cross-linking of cross-linked polyethylene under subcritical and supercritical conditions

AU - Lee, Hong Shik

AU - Jeong, Ju Hyeong

AU - Hong, Giyoung

AU - Cho, Hang Kyu

AU - Baek, Bum Ki

AU - Koo, Chong Min

AU - Hong, Soon Man

AU - Kim, Jaehoon

AU - Lee, Youn Woo

PY - 2013/5/22

Y1 - 2013/5/22

N2 - The effect of various solvents on the de-cross-linking reaction of cross-linked polyethylene under subcritical and supercritical conditions was studied. The gel content of the de-cross-linked polyethylene decreased from 60 to 0.8-2.5% at 380 °C within 5 min in all of the solvents tested in this study. When water, ethanol, and 2-propanol were used, the Mw of the de-cross-linked polyethylenes decreased from 349,000 to 200,000-227,000 g/mol, and much lower Mw values of 70,000-90,000 g/mol were observed when acetone and diisopropyl ether were used. The de-cross-linked polyethylenes treated in the different solvents had a very similar chemical structure to raw polyethylene. According to a kinetic study using a first-order reaction model, the de-cross-linking rate in each solvent increased in the order 2-propanol < ethanol < n-hexane < water < methanol ≪ diisopropyl ether ≪ acetone at 350 °C.

AB - The effect of various solvents on the de-cross-linking reaction of cross-linked polyethylene under subcritical and supercritical conditions was studied. The gel content of the de-cross-linked polyethylene decreased from 60 to 0.8-2.5% at 380 °C within 5 min in all of the solvents tested in this study. When water, ethanol, and 2-propanol were used, the Mw of the de-cross-linked polyethylenes decreased from 349,000 to 200,000-227,000 g/mol, and much lower Mw values of 70,000-90,000 g/mol were observed when acetone and diisopropyl ether were used. The de-cross-linked polyethylenes treated in the different solvents had a very similar chemical structure to raw polyethylene. According to a kinetic study using a first-order reaction model, the de-cross-linking rate in each solvent increased in the order 2-propanol < ethanol < n-hexane < water < methanol ≪ diisopropyl ether ≪ acetone at 350 °C.

UR - http://www.scopus.com/inward/record.url?scp=84878248584&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878248584&partnerID=8YFLogxK

U2 - 10.1021/ie4006194

DO - 10.1021/ie4006194

M3 - Article

AN - SCOPUS:84878248584

VL - 52

SP - 6633

EP - 6638

JO - Industrial & Engineering Chemistry Research

JF - Industrial & Engineering Chemistry Research

SN - 0888-5885

IS - 20

ER -