Application of decarboxylation reactions for improvement of dielectric properties of a methacrylic polymer

In this work, we present a method based on thermally induced decarboxylation to solve the incompatibility of dielectric properties and the developability in aqueous developer solution of dielectric materials for the application in photodefinable insulating materials. Herein, malonic acid 2-hydroxyet...

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Bibliographic Details
Published in:RSC advances 2021-06, Vol.11 (34), p.2926-2932
Main Authors: Li, Bao, Matsutani, Hiroshi, Kimura, Mika, Miyatake, Masato, Murakami, Yasuharu, Katoh, Sadaaki, Tanimoto, Akitoshi, Ma, Xiaodong, Jiang, Xuesong
Format: Article
Language:English
Subjects:
Acids
Aqueous solutions
Chemical synthesis
Chemistry
Decarboxylation
Dielectric properties
Esterification
Hydroxyethyl acrylate
Incompatibility
Infrared analysis
Insulation
Monomers
Polyhydroxyethyl methacrylate
Polymers
Pyrolysis
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Summary:In this work, we present a method based on thermally induced decarboxylation to solve the incompatibility of dielectric properties and the developability in aqueous developer solution of dielectric materials for the application in photodefinable insulating materials. Herein, malonic acid 2-hydroxyethyl methacrylate monoester, a methacrylate monomer with β-keto acid is synthesized via phosphotungstic acid catalyzed esterification of 2-hydroxyethyl methacrylate and malonic acid. Further polymerisation is conducted with the obtained monomer to prepare poly(2-hydroxyethyl methacrylate- co -malonic acid 2-hydroxyethyl acrylate monoester). The thermally induced decarboxylation behaviors of the prepared polymer are confirmed with TGA, pyrolysis-GCMS analysis, and IR analysis. D f / D k tests and dissolution tests are carried out to investigate the influences of decarboxylation on the dielectric properties and dissolubility in aqueous solution, respectively. The results demonstrate that the significant changes in dielectric properties and dissolubility are due to the thermally induced decarboxylation. Thermally induced decarboxylation solves the incompatibility between development in aqueous developer and dielectric performance.
ISSN:2046-2069
2046-2069
DOI:10.1039/d1ra01626a