The kinetics of chain transfer in anionic polymerization of propylene oxide

1973 ◽  
Vol 15 (6) ◽  
pp. 1370-1376 ◽  
Author(s):  
G.A. Gladkovskii ◽  
L.P. Golovina ◽  
G.F. Vedeneyeva ◽  
V.S. Lebedev
Keyword(s):  
Propylene Oxide ◽  
Anionic Polymerization ◽  
Chain Transfer ◽  
Kinetics Of

scholarly journals Heterotelechelic poly(propylene oxide) as migration-inhibited toughening agent in hot lithography based additive manufacturing

2021 ◽  
Vol 12 (9) ◽  
pp. 1260-1272
Author(s):  
Daniel Grunenberg ◽  
Katharina Ehrmann ◽  
Christian Gorsche ◽  
Bernhard Steyrer ◽  
Thomas Koch ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Propylene Oxide ◽  
Chain Transfer ◽  
Poly Propylene ◽  
Toughening Agent

Linking an addition–fragmentation-chain-transfer (AFCT) functionality and methacrylate moiety via poly(propylene oxide)-oligomer within one molecule creates a non-migrating AFCT-reagent aiding network-homogeneity.

Anionic polymerization of propylene oxide

1972 ◽  
Vol 10 (10) ◽  
pp. 3089-3102 ◽  
Author(s):  
L. P. Blanchard ◽  
V. Hornof ◽  
J. Moinard ◽  
F. Tahiani
Keyword(s):  
Propylene Oxide ◽  
Anionic Polymerization

Kinetics of the Anionic Polymerization of Buta-1,3-diene Considering Different Reactivities of the cis, trans and vinyl Structural Units

2008 ◽  
Vol 2 (5) ◽  
pp. 436-451 ◽  
Author(s):  
José A. Tenorio López ◽  
Juan J. Benvenuta Tapia ◽  
Celestino Montiel Maldonado ◽  
Leonardo Ríos Guerrero
Keyword(s):  
Anionic Polymerization ◽  
Structural Units ◽  
Kinetics Of

Study of kinetics of reaction of lignin model compounds with propylene oxide

Holzforschung ◽  
2008 ◽  
Vol 62 (2) ◽  
pp. 169-175 ◽  
Author(s):  
Krishna K. Pandey ◽  
Tapani Vuorinen
Keyword(s):  
Chemical Reaction ◽  
Propylene Oxide ◽  
Aqueous Media ◽  
Reaction Products ◽  
Model Compounds ◽  
Rapid Reduction ◽  
Visible Absorption ◽  
Lignin Model Compounds ◽  
Lignin Model ◽  
Kinetics Of

Abstract The etherification of phenolic groups has been found to inhibit photodegradation in wood and lignin rich pulps. The precise understanding of kinetics of chemical reaction between lignins or their model compounds and the etherifying agent is the first step for developing a viable modification procedure. In this study, we have investigated the reaction of lignin model compounds (namely, phenol and guaiacol) with propylene oxide in aqueous media. The kinetics of etherification reaction was studied under varying pH conditions in the temperature range 30–60°C. The etherified reaction products were characterized by gas chromatogram-mass spectrum (GC-MS). The extent of etherification of phenols and the rate of chemical reaction was followed by UV-Visible absorption spectroscopy. The reaction between lignin model compounds and propylene oxide was indicated by a rapid reduction in the absorbance accompanied by the development of a new band corresponding to etherified products. The reaction kinetics was investigated at pH ∼12 under the condition of excess concentration of propylene oxide. The reaction followed first order kinetics and rate constants increased linearly with an increase in the temperature and concentration of propylene oxide. The MS fragment data of reaction product support the proposed reaction scheme. The activation energy of the reaction of propylene oxide with phenol and guaiacol, calculated with the Arrhenius equation, was 56.2 kJ mol-1 and 45.4 kJ mol-1, respectively.

Kinetics of the anionic polymerization of acrylonitrile

1966 ◽  
Vol 8 (6) ◽  
pp. 1117-1121 ◽  
Author(s):  
Ye.V. Kochetov ◽  
A.A. Berlin ◽  
N.S. Yenikolopyan
Keyword(s):  
Anionic Polymerization ◽  
Kinetics Of
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