Effect of crosslinking concentration on mechanical and thermodynamic properties in acrylic acid–co–methyl methacrylate hydrogels

2006 ◽  
Vol 102 (4) ◽  
pp. 4016-4022 ◽  
Author(s):  
Issa Katime ◽  
E. Díaz de Apodaca ◽  
E. Rodríguez
Keyword(s):  
Acrylic Acid ◽  
Thermodynamic Properties ◽  
Methyl Methacrylate

ACRYLIC ACID/METHYL METHACRYLATE HYDROGELS. I. EFFECT OF COMPOSITION ON MECHANICAL AND THERMODYNAMIC PROPERTIES

2000 ◽  
Vol 37 (4) ◽  
pp. 307-321 ◽  
Author(s):  
Issa Katime ◽  
Elena Díaz de Apodaca ◽  
Eduardo Mendizábal ◽  
Jorge E. Puig
Keyword(s):  
Acrylic Acid ◽  
Thermodynamic Properties ◽  
Methyl Methacrylate ◽  
Acid Methyl

Reactions of macroions with ester and carboxylic groups of polymers

1987 ◽  
Vol 52 (9) ◽  
pp. 2194-2203
Author(s):  
Miloslav Kučera ◽  
Dušan Kimmer ◽  
Karla Majerová ◽  
Josef Majer
Keyword(s):  
Maleic Anhydride ◽  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Bond Formation ◽  
Covalent Bond ◽  
The Other ◽  
Poly Methyl Methacrylate ◽  
Other Hand ◽  
Carboxylic Groups ◽  
Poly Acrylic Acid

In the reaction of dianions with poly(methyl methacrylate), only an insignificant amount of insoluble crosslinked product is obtained. If, however, the concentration of grafting dianions approaches that of ester groups, the amount of poly(methyl methacrylate) which may thus be crosslinked becomes quite significant. Dications, too, can bring about crosslinking of only an insignificant number of poly(methyl methacrylate) chains. Carboxylic groups in poly(acrylic acid) react with dianions and dications in an anhydrous medium similarly to ester groups. On the other hand, in the presence of a cocatalytic amount of water dications are more readily bound to carboxylic groups, forming a covalent bond. The relatively highest efficiency was observed in the bond formation between dication and the poly[styrene-alt-(maleic anhydride)], both in an anhydrous medium and in the presence of H2O.

Synthesis of poly(methyl methacrylate)-b-poly(acrylic acid) by DPE method

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Dong Chen ◽  
Ruixue Liu ◽  
Zhifeng Fu ◽  
Yan Shi
Keyword(s):  
Molecular Weight ◽  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Diblock Copolymer ◽  
Self Assembly ◽  
Gel Permeation Chromatography ◽  
Amphiphilic Diblock Copolymer ◽  
Poly Methyl Methacrylate ◽  
Copolymer Poly ◽  
Poly Acrylic Acid

AbstractAmphiphilic diblock copolymer poly(methyl methacrylate)-b-poly(acrylic acid) (PMMA-b-PAA) was prepared by 1,1-diphenylethene (DPE) method. Firstly, free radical polymerization of methyl methacrylate was carried out with AIBN as initiator in the presence of DPE, giving a DPE-containing PMMA precursor with controlled molecular weight. tert-Butyl acrylate (tBA) was then polymerized in the presence of the PMMA precursor, and PMMA-b-PtBA diblock copolymer with controlled molecular weight was prepared. Finally, amphiphilic diblock copolymer PMMA-b-PAA was obtained by hydrolysis of PMMA-b-PtBA. The formation of PMMA-b-PAA was confirmed by 1H NMR spectrum and gel permeation chromatography. Transmission electron microscopy and dynamic light scattering were used to detect the self-assembly behavior of the amphiphilic diblock polymers in methanol.

scholarly journals Oligomerization of Acrylic Acid Derivatives by a Reaction with the Alkylcopper(I)-Phosphine Complex

2000 ◽  
Vol 2000 (1) ◽  
pp. 4-5 ◽  
Author(s):  
Michiharu Mitani ◽  
Chitsakon Pakjamsai ◽  
Teruko Tsuchida ◽  
Hidekazu Kudoh
Keyword(s):  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Butyl Acrylate ◽  
Phosphine Complexes ◽  
Dimerization Product ◽  
Phosphine Complex

Reaction of alkylcopper(I)phosphine complexes with electron-deficient olefins affected preferentially the products based on oligomerization, e.g. the product obtained by sequential conjugated addition, trimerization and cyclization from methyl methacrylate and the dimerization product from butyl acrylate.

scholarly journals Thermodynamic Properties of Solutions of the Acrylic Acid in 1,2-Dichloroethane and Acetic Acid

2011 ◽  
Vol 5 (2) ◽  
pp. 123-127 ◽  
Author(s):  
Valentin Serheyev ◽  
◽  
Yuri Kos ◽  
Yuri Van-Chin-Syan ◽  
◽  
...  
Keyword(s):  
Acetic Acid ◽  
Acrylic Acid ◽  
Thermodynamic Properties
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