Solventless Attachment of Long-Chain Molecules to Poly(ethylene-alt-maleic anhydride) Copolymer Surfaces

1998 ◽  
Vol 102 (28) ◽  
pp. 5500-5502 ◽  
Author(s):  
S. A. Evenson ◽  
J. P. S. Badyal
Keyword(s):  
Maleic Anhydride ◽  
Chain Molecules ◽  
Poly Ethylene ◽  
Maleic Anhydride Copolymer ◽  
Long Chain

Synthesis of ethylene maleic anhydride copolymer containing fungicides and evaluation of their effect for wood decay resistance

Holzforschung ◽  
2008 ◽  
Vol 62 (4) ◽  
Author(s):  
George C. Chen
Keyword(s):  
Maleic Anhydride ◽  
Active Agent ◽  
Wood Decay ◽  
Decay Resistance ◽  
White Rot ◽  
White Rot Fungus ◽  
Dimethyl Formamide ◽  
Poly Ethylene ◽  
Maleic Anhydride Copolymer ◽  
Hydroxy Quinoline

Abstract The aim of the present study was to combat wood decay based on the approach controlled-release biocides from polymers. The possibility of introducing polymer-bonded fungicides into the cell lumens was investigated. The synthesis of ethylene maleic anhydride copolymer containing pentachlorophenol (penta) and 8-hydroxy quinoline (8HQ) in N, N dimethyl formamide is described. It was demonstrated that the penta-bonded acrylate is a poly(ethylene co-dipentachlorophenyl diacrylate), which has a disubstituted pentachlorophenyl group linked through two acrylate ester bonds. The reaction of ethylene maleic anhydride copolymer with 8-hydroxy quinoline leads to products containing 44.8% poly(ethylene co-8-hydroxy quinolinyl acrylate) and 55.2% of unreacted poly(ethylene co-maleic anhydride). Wood impregnated with the polymers described prevented decay by a brown- and white-rot fungus, even after water leaching. Wood treated with the fungicide pentachlorophenol (penta) alone prevented only decay by a brown-rot fungus. An advantage is that high loading of penta in polymer can be achieved. Moreover, there is a slow-release effect on the active agent due to hydrolysis of ester bonds. The decay resistance of wood treated with poly(ethylene co-8-quinolinyl acrylate) was similar to that of wood impregnated with 8-hydroxy quinoline.

Carboxylated bleached kraft pulp from maleic anhydride copolymers

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hongfeng Zhang ◽  
Ester Tsenter ◽  
Paul Bicho ◽  
Erin A. S. Doherty ◽  
Richard Riehle ◽  
...  
Keyword(s):  
Maleic Anhydride ◽  
Pulp Mill ◽  
Paper Mill ◽  
Carboxyl Groups ◽  
Kraft Pulps ◽  
Bleached Kraft Pulp ◽  
Pulp Properties ◽  
Poly Ethylene ◽  
Maleic Anhydride Copolymer ◽  
Maleic Anhydride Copolymers

Abstract Seven copolymers of maleic anhydride were hydrolyzed and impregnated into sheets of bleached softwood kraft pulps to enhance market pulp properties. Drying the impregnated pulps at 120 °C for 10 minutes, attached to the fiber surfaces up 0.16 meq of carboxyl groups per gram of dry pulp. Heating the impregnated pulps regenerates succinic anhydride moieties which can then form stable ester linkages with cellulosic hydroxyls. The pH of the impregnation solution is important. Impregnation with solutions at pH 8 gave polymer contents without repulping issues. By contrast, impregnation at pH 4 gave dried pulp sheets that were too strong to enable repulping in a paper mill. Although most of the seven copolymers were fixed to cellulose, poly(ethylene-alt-maleic anhydride) gave the highest density of carboxyl groups. The simplicity of waterborne polymers and mild drying temperatures suggests maleic anhydride copolymer treatment could be implemented in a conventional market pulp mill.

Surface Esterification of Poly(Ethylene-alt-Maleic Anhydride) Copolymer

2000 ◽  
Vol 104 (45) ◽  
pp. 10608-10611 ◽  
Author(s):  
S. A. Evenson ◽  
C. A. Fail ◽  
J. P. S. Badyal
Keyword(s):  
Maleic Anhydride ◽  
Poly Ethylene ◽  
Maleic Anhydride Copolymer

Surface grafting of octylamine onto poly(ethylene-alt-maleic anhydride) gate insulators for low-voltage DNTT thin-film transistors

2016 ◽  
Vol 18 (12) ◽  
pp. 8522-8528 ◽  
Author(s):  
Yun-Seo Choe ◽  
Mi Hye Yi ◽  
Ji-Heung Kim ◽  
Yun Ho Kim ◽  
Kwang-Suk Jang
Keyword(s):  
Thin Film ◽  
Maleic Anhydride ◽  
Thin Film Transistors ◽  
Low Voltage ◽  
Gate Insulator ◽  
Surface Grafting ◽  
Gate Insulators ◽  
Poly Ethylene

We report the surface grafting of octylamine onto a poly(ethylene-alt-maleic anhydride) (PEMA) gate insulator for enhancing the performance of dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT) thin-film transistors.

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