Designing Small Molecules for Biodegradability

Boethling, Robert S.; Sommer, Elizabeth; DiFiore, David

doi:10.1021/cr050952t

Cited by 275 publications

(189 citation statements)

References 109 publications

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“…[11][12][13][14] The authors have reported the massive production of 2-pyrone-4,6-dicarboxylic acid (PDC), the key intermediate chemical of lignin, by the action of transformed bacterium. 15 The PDC consists of the polar pseudo-aromatic ring system and two carbonic acids, which can serve as a bifunctional monomer for polycondensation and polyaddition.…”

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Polyesters of 2-Pyrone-4,6-dicarboxylic Acid (PDC) as Bio-based Plastics Exhibiting Strong Adhering Properties

et al. 2009

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2-Pyrone-4,6-dicarboxylic acid (PDC), a chemically stable metabolic intermediate of lignin, its bis(hydroxyethyl) derivative (BHPDC) and bis(hydroxyethyl) terephthalate (BHT) were polymerized to prepare the corresponding polyesters carrying the oxyethyleneoxycarbonyl(2-pyrone-4,6-diyl)carbonyl and oxyethyleneoxy-terephthaloyl units [x and y units, resp., x þ y ¼ 1] by polycondensation eliminating water and/or 1,2-ethanediol molecules. The polyesters were mostly stable up to 210 C, after that the degradation of pyrone ring commenced. These polyesters exhibited strong adhering properties against metal, glass and surfaces with increasing the x unit content to 0.4-0.6, such as about 50-60 MPa for SUS/polyester/SUS or Al/ polyester/Al samples, by the JIS K 6849:1994 testing method of tensile strength. As the fracturing plane was the midst of the polyester layer and at the interface, the polyester was tenaciously adhering to the metal surface.

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Polyesters of 2-Pyrone-4,6-dicarboxylic Acid (PDC) as Bio-based Plastics Exhibiting Strong Adhering Properties

et al. 2009

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“…Aqueles que resistem à biodegradação permanecem no meio ambiente, causando efeitos tóxicos, alguns dos quais não podem ser conhecidos ou previsíveis logo no início. 1 Produtos bioacumuláveis persistentes são de grande preocupação, já que tendem a se acumular nos tecidos de peixes, animais, plantas (e cada vez mais concentrados à medida que sobem na cadeia alimentar). Os sintomas de contaminação podem ainda se manifestar após várias gerações a partir do contato inicial com a substância tóxica.…”

Section: Figura 1 Henri Becquerel Pierre Curie E Marie Sklodowskaunclassified

Green Chemistry, Sustainable Economy and Quality of Life

Ferreira¹,

Rocha²,

Silva³

2014

Revista Virtual De Química

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Abstract:Despite the early problems linked to industrial activities related to chemistry date back to the early twentieth century, and issues such as green chemistry and sustainability have been already discussed in academic and industrial environments. Green chemistry is good for the environment, human health and the economy, but there are still many mysteries in the "green field". In this article, the authors attempt to repackage the "green" concept of the chemistry focused on the needs of developing new processes and broader reflections on global and sustainable economy and quality of life.Keywords: Green chemistry; sustainability; quality of life; environment. ResumoA imagem da Química tem sido relacionada a problemas oriundos de atividades industriais desde o início do século XX. Seus reflexos no meio ambiente reforçam a necessidade da redução de riscos em produtos e processos, e temas como Química Verde e sustentabilidade vêm sendo discutidos nos meios acadêmicos e industriais. A Química Verde é boa para o meio ambiente, a saúde humana e economia, mas ainda existem muitas "sombras" no verde. Neste artigo, os autores discutem o conceito "verde" da Química, voltado para o desenvolvimento de novos processos, e de uma reflexão mais ampla e global sobre economia sustentável e qualidade de vida.Palavras-chave: Química verde; sustentabilidade; qualidade de vida; meio ambiente.

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“…[96] Boethling and co-workers in their review article "Designing Small Molecules for Biodegradability", gave useful and general guidelines for the design and synthesis of environmental friendly chemicals. [97] According to their observations, compounds containing unsubstituted alkyl chains, benzene rings, oxygen functionalities such as esters, aldehydes, and carboxylic acids (potential sites for enzymatic hydrolysis) greatly increase biodegradation. Whereas compounds containing halogens, branched chains, heterocycles, functional groups such as nitro, nitroso and arylamines motifs, adversely affect the biodegradation.…”

Section: Biodegradation Of Ionic Liquidsmentioning

confidence: 99%