The influence of poly(acrylic acid) molecular weight on the fracture toughness of glass-ionomer cements

1989 ◽  
Vol 24 (1) ◽  
pp. 363-371 ◽  
Author(s):  
R. G. Hill ◽  
A. D. Wilson ◽  
C. P. Warrens
Keyword(s):  
Fracture Toughness ◽  
Molecular Weight ◽  
Acrylic Acid ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Poly Acrylic Acid

Effect of poly(acrylic acid) architecture on setting and mechanical properties of glass ionomer cements

2020 ◽  
Vol 36 (3) ◽  
pp. 377-386 ◽  
Author(s):  
R. Wetzel ◽  
O. Eckardt ◽  
P. Biehl ◽  
D.S. Brauer ◽  
F.H. Schacher
Keyword(s):  
Mechanical Properties ◽  
Acrylic Acid ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Poly Acrylic Acid

Glass-ionomer cements based on poly(acrylic acid-co-vinyl alcohol) in drug release model formulations

Biomaterials ◽  
1996 ◽  
Vol 17 (9) ◽  
pp. 913-919 ◽  
Author(s):  
Marie-Christine Lindsjö ◽  
Kenneth B. Ekman ◽  
Jan H. Näsman
Keyword(s):  
Drug Release ◽  
Acrylic Acid ◽  
Vinyl Alcohol ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Release Model ◽  
Poly Acrylic Acid

The Influence of Polyacid Molecular Weight on Some Properties of Glass-ionomer Cements

1989 ◽  
Vol 68 (2) ◽  
pp. 89-94 ◽  
Author(s):  
A.D. Wilson ◽  
R.G. Hill ◽  
C.P. Warrens ◽  
B.G. Lewis
Keyword(s):  
Fracture Toughness ◽  
Molecular Weight ◽  
Erosion Rate ◽  
Glass Ionomer Cement ◽  
Thermoplastic Composites ◽  
Polymer Science ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Acid Component ◽  
Ionomer Cement

The influence of the molecular weight of the poly(acrylic acid) component on some properties of glass-ionomer cement has been investigated. The results can be explained by treatment of glass-ionomer cements as thermoplastic composites. Many of the concepts of polymer science can be applied successfully in a qualitative way to these cements, including the ideas of entanglements and reptation. Molecular weight of the polyacid had a pronounced influence on setting rate, acid erosion rate, toughness, fracture toughness, and wear resistance. The chain length of the polyacid was found to be an important parameter in formulation of a cement, and the higher the molecular weight, the better the properties. However, in practice the molecular weight is limited by viscosity, and some balance has to be achieved among concentration, molecular weight, and viscosity.

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.

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