Synthesis and hydrolytic degradation of poly(ethylene succinate) and poly(ethylene terephthalate) copolymers

Kondratowicz, Filip Lukasz; Ukielski, Ryszard

doi:10.1016/j.polymdegradstab.2008.12.001

Cited by 45 publications

(28 citation statements)

References 21 publications

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“…Many studies have investigated the degradability of a wide range of polymers [29,32,45,[72][73][74][75]. Zheng et al [30] observed that in most cases, polymers with pure carbon backbones are particularly resistant to most methods of degradation, but polymers that include heteroatoms in the backbone (e.g., polyesters, polyamines) show higher susceptibility to degradation.…”

Section: Biodegradationmentioning

confidence: 99%

“…This suggests that the reason for the extreme stability arises from being in a polymeric state. There have been a few studies that have established a link between plastic degradability and the degree of crystallisation of the polymer [39,72,73,[75][76][77]. Increased crystallisation limits chain movement and decreases the availability of polymer chains for degradative agents, such as microbial lipases or other ester lysing molecules (Figure 3).…”

Section: Biodegradationmentioning

confidence: 99%

“…Evidence for this can be seen in the lipase-catalysed degradation of poly(hydroxybutyrate-co-valerate) (PHBV), which has been shown to occur preferentially in the amorphous regions, exposing the polymer crystals [78]. Efforts to increase the biodegradability of PET have focussed on modifications of the polymer to decrease the intermolecular cohesion [31,75,79,80]; however, this approach dictates the need to find a compromise between optimum biodegradability and the mechanical and chemical stability for which PET is chosen for so many applications. …”

Section: Biodegradationmentioning

confidence: 99%

See 2 more Smart Citations

Plastic Degradation and Its Environmental Implications with Special Reference to Poly(ethylene terephthalate)

et al. 2012

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Abstract:With increasing global consumption and their natural resistance to degradation, plastic materials and their accumulation in the environment is of increasing concern. This review aims to present a general overview of the current state of knowledge in areas that relate to biodegradation of polymers, especially poly(ethylene terephthalate) (PET). This includes an outline of the problems associated with plastic pollution in the marine environment, a description of the properties, commercial manufacturing and degradability of PET, an overview of the potential for biodegradation of conventional polymers and biodegradable polymers already in production.

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Section: Biodegradationmentioning

confidence: 99%

Section: Biodegradationmentioning

confidence: 99%

Section: Biodegradationmentioning

confidence: 99%

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Plastic Degradation and Its Environmental Implications with Special Reference to Poly(ethylene terephthalate)

et al. 2012

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“…It can be synthesized by either ring-opening polymerization of succinic anhydride or by polycondensation of succinic acid and ethylene glycol 27 . PESu has been successfully blended with a number of polymers in an attempt to improve its physical properties and increase its biodegradation rates, such as poly(ε-caprolactone) 28 , poly(butylene succinate) 29,30 , poly(octamethylene succinate) 31 , poly(decamethylene succinate) 32,33 , poly(ethylene oxide) 34 , poly(ethylene terephthalate) 35 , poly(l-lactide) 26 , poly(diethylene glycol succinate) 36 , poly(ethylene adipate) 37 and others. The majority of those materials exhibit good compatibility in blends and improved biodegradation rates.…”

Section: Introductionmentioning

confidence: 99%

Biobased poly(ethylene furanoate-co-ethylene succinate) copolyesters: solid state structure, melting point depression and biodegradability

et al. 2016

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Poly(ethylene furanoate) (PEF) is a fully bio-based polyester with unique gas barrier properties, considered an alternative to poly(ethylene terephthalate) (PET) in food packaging applications. However, it is not biodegradable. For this reason copolymerization with the aliphatic succinic acid monomer, was followed. The respective poly(ethylene furanoate-co-ethylene succinate) (PEFSu) copolymers were prepared via melt polycondensation from 2,5-dimethylfuran-dicarboxylate, succinic acid and ethylene glycol at different ratios.1 HNMR spectroscopy showed the copolymers are random. The crystallization and melting of the copolymers were thoroughly evaluated. Isodimorphic cocrystallization was concluded from both the 2 WAXD patterns and the minimum in the plots of melting temperature versus composition. The pseudo-eutectic melting point corresponded to an ethylene succinate content of about 30 mol%. The enzymatic hydrolysis tests using of Rhizopus delemarand Pseudomonas Cepacia lipase, revealed that the copolymers with up to 50 mol% ES units show measurable weight loss rates. For higher ES content, the copolymers showed fast hydrolysis.

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“…Among a number of plastics undergoing biological transformation, aliphatic-aromatic copolyesters (AAC) are interesting due to economic reasons, but also cause anxiety [9]. Because of a complicated AAC structure and the presence of aromatic groups, this kind of material may not undergo total mineralisation whereas its disintegration and degradation products may constitute durable environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Effect of composting plant material with copolyester on quality of organic matter

Kopeć

Twarowska-Schmidt

Gondek

2016

Ecological Chemistry and Engineering S

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Abstract:The problem of incorporating plastics into the environment will be aggravating, both regarding its scale and kind of these materials. Investigations were carried out using aliphatic-aromatic copolyester poly (succinate-co-glutarate-co-adipate-co-terephthalate 1,4-butylene) with addition of fatty acid dimers. The work aimed to determine the effect of composting the copolyester with plant biomass on changes of fractional composition of humus substances and their stability. Copolyester was supplemented to the biomass in the form of a nonwoven fabric in two doses. It constituted 8 and 16% of the dry mass of the composted substrates. The composting process was run within two ranges of ambient temperature 25-30°C and 40-45°C. After the completion of this process, the degree of material maturing was assessed using manometric methods and the carbon content was analysed in the individual organic matter fractions. On the basis of cumulated respiratory activity AT4 a lack of composted material activity was revealed in the higher temperatures of the process. However, in the objects where copolyester was transformed in the lower temperatures this activity was considerably diversified. Adding copolyester to the composted biomass led to a diversification of the Cha : Cfa ratio. The values of Cha : Cfa ratio most approximating 1.5, ie the value regarded as optimal, were registered in the object, where copolyester supplement constituted 16% and the plant biomass was maintained within the 40-45°C temperature range.

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Synthesis and hydrolytic degradation of poly(ethylene succinate) and poly(ethylene terephthalate) copolymers

Cited by 45 publications

References 21 publications

Plastic Degradation and Its Environmental Implications with Special Reference to Poly(ethylene terephthalate)

Plastic Degradation and Its Environmental Implications with Special Reference to Poly(ethylene terephthalate)

Biobased poly(ethylene furanoate-co-ethylene succinate) copolyesters: solid state structure, melting point depression and biodegradability

Effect of composting plant material with copolyester on quality of organic matter

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