RANDOM COPOLYMER OF PROPYLENE OXIDE AND ETHYLENE OXIDE PREPARED BY DOUBLE METAL CYANIDE COMPLEX CATALYST

Copolymerization of propylene oxide (PO) and ethylene oxide (EO) using double metal cyanide (DMC) complex as the catalyst was carried out. The structure of random copolymers was confirmed by 13C-NMR and IR spectra. 1H-NMR analysis shows that the EO content in the copolymer is the same as that in the...

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Bibliographic Details
Published inChinese journal of polymer science Vol. 20; no. 5; pp. 453 - 459
Main Author Yi-jun Huang Guo-rong Qi Guan-xi Chen
Format Journal Article
LanguageEnglish
Published Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China 01.09.2002
Subjects
complex
cyanide
Double
Ethylene
metal
oxide
Propylene
Propylene oxide
Double metal cyanide complex
Ethylene oxide
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Summary:Copolymerization of propylene oxide (PO) and ethylene oxide (EO) using double metal cyanide (DMC) complex as the catalyst was carried out. The structure of random copolymers was confirmed by 13C-NMR and IR spectra. 1H-NMR analysis shows that the EO content in the copolymer is the same as that in the initial monomer feed. Moderate molecular weight copolymers with various EO content were obtained and their values of molecular weight distribution (MWD) fell in the range of 1.21-1.55. It was found that the molecular weight of copolymers is controlled by the mass ratio ofEO + PO to initiator moles used. The reaction rate as well as polymer yield decrease with increasing EO content in the feed composition.
Bibliography:O63
11-2015/O6
ISSN:0256-7679
1439-6203
DOI:10.3321/j.issn:0256-7679.2002.05.010