Dehydrochlorination of poly(vinyl chloride) with Ca(OH) 2 in ethylene glycol and the effect of ball milling

Tomohito Kameda; Shintaro Wachi; Guido Grause; Tadaaki Mizoguchi; Toshiaki Yoshioka

doi:10.1007/s10965-011-9574-x

Dehydrochlorination of poly(vinyl chloride) with Ca(OH) ₂ in ethylene glycol and the effect of ball milling

Tomohito Kameda, Shintaro Wachi, Guido Grause, Tadaaki Mizoguchi, Toshiaki Yoshioka

Tohoku University

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

18 Citations (Scopus)

Abstract

The dehydrochlorination behavior of pure and flexible PVC in ethylene glycol was studied in the presence of Ca(OH) ₂ at temperatures between 170 °C and 190 °C. Although the dehydrochlorination proceeded slower in Ca(OH) ₂ than in NaOH, similar dehydrochlorination yields were obtained. It was assumed that the slower reaction rate was a result of the low solubility of Ca(OH) ₂ and the larger solvation shell of the Ca ²⁺ ion. The dehydrochlorination rate and yield were improved by employing a ball mill. Additionally, diisononyl phthalate and CaCO ₃ were quantitatively separated from flexible PVC during the ball-milling process. The maximum dehydrochlorination yield of pure PVC after 7 h at 190 °C was 74%. After 8 h at the same temperature, a comparable dehydrochlorination yield of 77% was achieved for flexible PVC, which could be increased by ball milling to 86%.

Original language	English
Pages (from-to)	1687-1691
Number of pages	5
Journal	Journal of Polymer Research
Volume	18
Issue number	6
DOIs	https://doi.org/10.1007/s10965-011-9574-x
Publication status	Published - 2011 Nov

Keywords

Ca(OH)
Dehydrochlorination
Ethylene glycol
Poly(vinyl chloride)
Reaction kinetics

Access to Document

10.1007/s10965-011-9574-x

Cite this

@article{1cd0d24e0a224bfda48087045742e449,

title = "Dehydrochlorination of poly(vinyl chloride) with Ca(OH) 2 in ethylene glycol and the effect of ball milling",

abstract = "The dehydrochlorination behavior of pure and flexible PVC in ethylene glycol was studied in the presence of Ca(OH) 2 at temperatures between 170 °C and 190 °C. Although the dehydrochlorination proceeded slower in Ca(OH) 2 than in NaOH, similar dehydrochlorination yields were obtained. It was assumed that the slower reaction rate was a result of the low solubility of Ca(OH) 2 and the larger solvation shell of the Ca 2+ ion. The dehydrochlorination rate and yield were improved by employing a ball mill. Additionally, diisononyl phthalate and CaCO 3 were quantitatively separated from flexible PVC during the ball-milling process. The maximum dehydrochlorination yield of pure PVC after 7 h at 190 °C was 74%. After 8 h at the same temperature, a comparable dehydrochlorination yield of 77% was achieved for flexible PVC, which could be increased by ball milling to 86%.",

keywords = "Ca(OH), Dehydrochlorination, Ethylene glycol, Poly(vinyl chloride), Reaction kinetics",

author = "Tomohito Kameda and Shintaro Wachi and Guido Grause and Tadaaki Mizoguchi and Toshiaki Yoshioka",

year = "2011",

month = nov,

doi = "10.1007/s10965-011-9574-x",

language = "English",

volume = "18",

pages = "1687--1691",

journal = "Journal of Polymer Research",

issn = "1022-9760",

publisher = "Springer Netherlands",

number = "6",

}

TY - JOUR

T1 - Dehydrochlorination of poly(vinyl chloride) with Ca(OH) 2 in ethylene glycol and the effect of ball milling

AU - Kameda, Tomohito

AU - Wachi, Shintaro

AU - Grause, Guido

AU - Mizoguchi, Tadaaki

AU - Yoshioka, Toshiaki

PY - 2011/11

Y1 - 2011/11

N2 - The dehydrochlorination behavior of pure and flexible PVC in ethylene glycol was studied in the presence of Ca(OH) 2 at temperatures between 170 °C and 190 °C. Although the dehydrochlorination proceeded slower in Ca(OH) 2 than in NaOH, similar dehydrochlorination yields were obtained. It was assumed that the slower reaction rate was a result of the low solubility of Ca(OH) 2 and the larger solvation shell of the Ca 2+ ion. The dehydrochlorination rate and yield were improved by employing a ball mill. Additionally, diisononyl phthalate and CaCO 3 were quantitatively separated from flexible PVC during the ball-milling process. The maximum dehydrochlorination yield of pure PVC after 7 h at 190 °C was 74%. After 8 h at the same temperature, a comparable dehydrochlorination yield of 77% was achieved for flexible PVC, which could be increased by ball milling to 86%.

AB - The dehydrochlorination behavior of pure and flexible PVC in ethylene glycol was studied in the presence of Ca(OH) 2 at temperatures between 170 °C and 190 °C. Although the dehydrochlorination proceeded slower in Ca(OH) 2 than in NaOH, similar dehydrochlorination yields were obtained. It was assumed that the slower reaction rate was a result of the low solubility of Ca(OH) 2 and the larger solvation shell of the Ca 2+ ion. The dehydrochlorination rate and yield were improved by employing a ball mill. Additionally, diisononyl phthalate and CaCO 3 were quantitatively separated from flexible PVC during the ball-milling process. The maximum dehydrochlorination yield of pure PVC after 7 h at 190 °C was 74%. After 8 h at the same temperature, a comparable dehydrochlorination yield of 77% was achieved for flexible PVC, which could be increased by ball milling to 86%.

KW - Ca(OH)

KW - Dehydrochlorination

KW - Ethylene glycol

KW - Poly(vinyl chloride)

KW - Reaction kinetics

UR - http://www.scopus.com/inward/record.url?scp=84855579620&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84855579620&partnerID=8YFLogxK

U2 - 10.1007/s10965-011-9574-x

DO - 10.1007/s10965-011-9574-x

M3 - Article

AN - SCOPUS:84855579620

SN - 1022-9760

VL - 18

SP - 1687

EP - 1691

JO - Journal of Polymer Research

JF - Journal of Polymer Research

IS - 6

ER -

Dehydrochlorination of poly(vinyl chloride) with Ca(OH) ₂ in ethylene glycol and the effect of ball milling

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this