Abstract
Five perfluoro-4,5-substituted-2-methylene-1,3-dioxolane monomers were synthesized. These monomers were found to readily polymerized by a free radical initiator in bulk and/or in solutions. Homopolymerization rates were determined using in situ 19F NMR measurements and found to be 0.25 to 1.66 × 10-4 mol L-1 s-1 in 1,1,2-trichlorotrifluoroethane at 41°C using the perfluorodibenzoyl peroxide as an initiator. The rates depend on the substituents on the 4 and 5 positions of the dioxolane. The purified polymers were thermally stable (up to 350°C). They show low refractive indexes (1.33-1.36 at 532 nm). They are transparent from UV to near IR region and have high glass transition temperatures (100-170°C).
| Original language | English |
|---|---|
| Pages (from-to) | 277-281 |
| Number of pages | 5 |
| Journal | Journal of Fluorine Chemistry |
| Volume | 127 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2006 Feb |
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Keywords
- F NMR spectra
- Perfluoro-4,5-substituted-2-methylene-1,3-dioxolane
- Polymer properties
- Polymerization rate
ASJC Scopus subject areas
- Inorganic Chemistry
- Organic Chemistry
- Materials Chemistry
- Polymers and Plastics
Cite this
Investigation of homopolymerization rate of perfluoro-4,5-substituted-2- methylene-1,3-dioxolane derivatives and properties of the polymers. / Yang, Yu; Mikeš, František; Yang, Liang; Liu, Weihong; Koike, Yasuhiro; Okamoto, Yoshiyuki.
In: Journal of Fluorine Chemistry, Vol. 127, No. 2, 02.2006, p. 277-281.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Investigation of homopolymerization rate of perfluoro-4,5-substituted-2- methylene-1,3-dioxolane derivatives and properties of the polymers
AU - Yang, Yu
AU - Mikeš, František
AU - Yang, Liang
AU - Liu, Weihong
AU - Koike, Yasuhiro
AU - Okamoto, Yoshiyuki
PY - 2006/2
Y1 - 2006/2
N2 - Five perfluoro-4,5-substituted-2-methylene-1,3-dioxolane monomers were synthesized. These monomers were found to readily polymerized by a free radical initiator in bulk and/or in solutions. Homopolymerization rates were determined using in situ 19F NMR measurements and found to be 0.25 to 1.66 × 10-4 mol L-1 s-1 in 1,1,2-trichlorotrifluoroethane at 41°C using the perfluorodibenzoyl peroxide as an initiator. The rates depend on the substituents on the 4 and 5 positions of the dioxolane. The purified polymers were thermally stable (up to 350°C). They show low refractive indexes (1.33-1.36 at 532 nm). They are transparent from UV to near IR region and have high glass transition temperatures (100-170°C).
AB - Five perfluoro-4,5-substituted-2-methylene-1,3-dioxolane monomers were synthesized. These monomers were found to readily polymerized by a free radical initiator in bulk and/or in solutions. Homopolymerization rates were determined using in situ 19F NMR measurements and found to be 0.25 to 1.66 × 10-4 mol L-1 s-1 in 1,1,2-trichlorotrifluoroethane at 41°C using the perfluorodibenzoyl peroxide as an initiator. The rates depend on the substituents on the 4 and 5 positions of the dioxolane. The purified polymers were thermally stable (up to 350°C). They show low refractive indexes (1.33-1.36 at 532 nm). They are transparent from UV to near IR region and have high glass transition temperatures (100-170°C).
KW - F NMR spectra
KW - Perfluoro-4,5-substituted-2-methylene-1,3-dioxolane
KW - Polymer properties
KW - Polymerization rate
UR - http://www.scopus.com/inward/record.url?scp=32344450404&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=32344450404&partnerID=8YFLogxK
U2 - 10.1016/j.jfluchem.2005.12.004
DO - 10.1016/j.jfluchem.2005.12.004
M3 - Article
AN - SCOPUS:32344450404
VL - 127
SP - 277
EP - 281
JO - Journal of Fluorine Chemistry
JF - Journal of Fluorine Chemistry
SN - 0022-1139
IS - 2
ER -