Synthesis of Konjac Glucomannan-Graft-Methacrylic Acid Copolymer

2012 ◽  
Vol 554-556 ◽  
pp. 307-310
Author(s):  
Hui Min Han ◽  
Chi Zhang ◽  
Jing Xu ◽  
Peng Qu ◽  
Ye Zhou ◽  
...  
Keyword(s):  
Free Radical ◽  
Reaction Temperature ◽  
Methacrylic Acid ◽  
Konjac Glucomannan ◽  
Initiator Concentration ◽  
Reaction Conditions ◽  
Radical Initiation ◽  
Acid Copolymer ◽  
Free Radical Initiation ◽  
Methacrylic Acid Copolymers

Konjac glucomannan is a kind of natural polysaccharides with excellent biocompatibility and biodegradable activities. In this paper, a series of Konjac glucomannan-graft-methacrylic acid copolymers were prepared by the free-radical initiation grafting Konjac Glucomannan (KGM) with methacrylic acid(MA). The reaction conditions such as reaction temperature, KGM and MA ratio and initiator concentration, were investigated, and chemistry of KGM and its MA grafted copolymers were characterized using FTIR.

Relative Reactivities of 1,1,1-Trichloroethane and 1,1,1-Trichlorotrifluoroethane in Competitive Addition Reactions

1992 ◽  
Vol 57 (6) ◽  
pp. 1291-1298 ◽  
Author(s):  
František Adámek ◽  
Milan Hájek ◽  
Zbyněk Janoušek
Keyword(s):  
Free Radical ◽  
Reaction Mechanism ◽  
Relative Reactivity ◽  
Addition Reactions ◽  
Radical Initiation ◽  
Amine Complexes ◽  
Free Radical Initiation ◽  
Ru Complexes ◽  
Radical Initiators

Relative reactivity of CH3CCl3 and CF3CCl3 measured in competitive addition reactions with 1-hexene in the presence of free radical initiators or Cu, Pd and Ru complexes was found to depend on the type of catalyst. The unusual course of the reaction has been found in the additions catalyzed with copper(I)-amine complexes where CH3CCl3 in competition with CF3CCl3 was completely unreactive. The results have been explained in terms of the change of reaction mechanism and compared with classical free radical initiation.

Features of mechanism of free radical initiation in polymers under exposure to nitrogen oxides

2008 ◽  
Vol 19 (6) ◽  
pp. 475-484 ◽  
Author(s):  
E. Y. Davydov ◽  
I. S. Gaponova ◽  
T. V. Pokholok ◽  
A. P. Vorotnikov ◽  
G. B. Pariiskii ◽  
...  
Keyword(s):  
Free Radical ◽  
Nitrogen Oxides ◽  
Radical Initiation ◽  
Free Radical Initiation

Studies in free radical initiation

1996 ◽  
Vol 111 (1) ◽  
pp. 265-280
Author(s):  
L. H. García-Rubio
Keyword(s):  
Free Radical ◽  
Radical Initiation ◽  
Free Radical Initiation
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