scholarly journals Crosslinked Graft Copolymer of Methacrylic Acid and Gelatin as a Novel Hydrogel with pH-Responsiveness Properties

Materials ◽  
2011 ◽  
Vol 4 (3) ◽  
pp. 543-552 ◽  
Author(s):  
Mohammad Sadeghi ◽  
Behrouz Heidari
Keyword(s):  
Graft Copolymer ◽  
Methacrylic Acid

Adhesive properties of aluminum-containing functionalized polymer composites obtained in the process of mechano-chemical modification

2021 ◽  
Vol 10 ◽  
pp. 27-36
Author(s):  
K. V. Allahverdiyeva ◽  
Keyword(s):  
Maleic Anhydride ◽  
Polymer Matrix ◽  
Graft Copolymer ◽  
Methacrylic Acid ◽  
Graft Copolymers ◽  
Aluminum Foil ◽  
Adhesive Properties ◽  
Pressing Temperature ◽  
Type Of Fracture ◽  
Dispersed Aluminum

The influence of the concentration of finely dispersed aluminum and compatibilizer on the resistance to peeling of aluminum foil from the surface of a composite based on low density polyethylene and high density polyethylene is considered. To improve the compatibility of the filler with the polymer matrix, a compatibilizer was used, which is a graft copolymer of polyethylene of various grades with methacrylic acid and maleic anhydride. Copper and aluminum foil was used as a substrate. It is shown that the introduction of a compatibilizer into the composition of aluminum-filled composites improves their peeling resistance. It has been found that if an aluminum filled compatibilizer is used directly as an adhesive, then the peeling resistance of copper and aluminum foil is significantly increased. Graft copolymers of polyethylene with maleic anhydride have the highest peel resistance values. The results of the study of the influence of the pressing temperature on the type of adhesive failure are presented. It is shown that with an increase in the pressing temperature, a mixed type of adhesive destruction is observed. It has been experimentally proved that, in percentage terms, the cohesive type of fracture prevails in composites where graft copolymers are used as a polymer matrix. It was found that a 100 % cohesive type of fracture is observed in foil-clad composites pressed at a temperature of 190 °C, where a graft copolymer of polyethylene with methacrylic acid or maleic anhydride is used as an adhesive.

Heterophase grafting polymerization of methacrylic acid onto poly(caproamide) fibres and the structure of the graft copolymer

1991 ◽  
Vol 33 (3) ◽  
pp. 575-580
Author(s):  
L.G. Kazaryan ◽  
V.A. Vasil'ev ◽  
N.V. Smirnova ◽  
G.A. Gabrielyan ◽  
L.S. Gal'braikh
Keyword(s):  
Graft Copolymer ◽  
Methacrylic Acid ◽  
Grafting Polymerization

Self-Assembly of Poly(4-methylstyrene)-g-poly(methacrylic acid) Graft Copolymer in Selective Solvents for Grafts: Scattering and Molecular Dynamics Simulation Study

Langmuir ◽  
2010 ◽  
Vol 26 (12) ◽  
pp. 9289-9296 ◽  
Author(s):  
Miroslav Štěpánek ◽  
Peter Košovan ◽  
Karel Procházka ◽  
Miroslav Janata ◽  
Miloš Netopilík ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Graft Copolymer ◽  
Simulation Study ◽  
Methacrylic Acid ◽  
Self Assembly ◽  
Dynamics Simulation ◽  
Selective Solvents

Preparation and application of chitosan/poly(methacrylic acid) graft copolymer

2006 ◽  
Vol 66 (2) ◽  
pp. 176-183 ◽  
Author(s):  
Khaled F. El-Tahlawy ◽  
Safaa M. El-Rafie ◽  
Aly Sayed Aly
Keyword(s):  
Graft Copolymer ◽  
Methacrylic Acid

Compatibilizers made from Copolymers that Exhibit Strong Interactions

1996 ◽  
Vol 461 ◽  
Author(s):  
Barry J. Bauer ◽  
Da-Wei Liu
Keyword(s):  
Methyl Methacrylate ◽  
Interaction Parameter ◽  
Graft Copolymer ◽  
Methacrylic Acid ◽  
Polyethylene Oxide ◽  
Graft Copolymers ◽  
Random Copolymers ◽  
Strong Interactions ◽  
Melt Blending ◽  
Strength Of Interaction

ABSTRACTRandom copolymers of poly(methyl methacrylate-d8) (PMMA) and poly(methacrylic acid) (PMAA) were synthesized and blended with polyethylene oxide (PEO), and SANS was used to estimate the strength of interaction between the various polymer pairs. The addition of PMAA greatly reduced the scattering of the blend, giving a large negative Flory-Huggins interaction parameter. Copolymers of the type PMAA-g-PS, PMAA-r-PS, PMMA-g-PS, and PMMA-r-PS (g = graft, r = random) were used as compatibilizers for the melt blending of mixtures containing 80% PS and 20% PEO. Random copolymers containing half PMMA and half PS or half PMAA and half PS were ineffective compatibilizers while graft copolymers of these polymers produced a much finer dispersion of PEO in PS when blended at 190°C. Graft copolymers made with 90% PS were different, however, with PMMA grafts having only a small effect, while PMAA grafts having a large effect. Random and graft copolymers of PS and PMMA were also used to compatibilize blends of PS and PMMA. The results were similar to the same compatibilizers with blends of PS and PEO, with the graft copolymer causing a finer dispersion.

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