Synthetic Biodegradable Polymers with Chain End Modification: Polylactide, Poly(butylene succinate), and Poly(hydroxyalkanoate)

Chanthaset, Nalinthip; Ajiro, Hiroharu

doi:10.1246/cl.200859

Cited by 9 publications

(4 citation statements)

References 187 publications

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“…As expected, ΔH m of protein-based bio composite decreased faster compared to those containing PHA, confirming that the addition of other components in the matrix formulation with PHA slows down the biodegradation process. This is in agreement with other researches conducting biodegradation of PHA-based biopolymer blends or compounds made with protein, extenders, or compatibilizers (Chanthaset & Ajiro, 2021).…”

Section: Differential Scanning Calorimetry (Dsc)supporting

confidence: 93%

“…According to the ISO 14855: 2017 standard, the behavior of these two evaluated samples (TPSPHAGLU and TPS/PHA) do not comply with the established limits, assuming that this standard establishes that material to be biodegradable must degrade by 70% in a period, approximately 45 days. However, it is important to take into account that the biodegradation property of PHA can be affected by additives or chain extenders and by compatibilizers (Chanthaset & Ajiro, 2021), since they significantly affect the hydrophilicity of this polymer and therefore its microbial biodegradability by enzymatic pathway, this behavior biodegradation, intracellular as the catalytic reaction occurs in the cells of the microorganisms. According to this, it is possible that the composition of the PHA‐based mixture studied, composed of polylactic acid (PLA), polybutylene adipate co‐terephthalate (PBAT) and the use of maleic anhydride as a coupling agent, and benzoyl peroxide as a catalyst (Alban et al., 2016) may have affected the hydrophilicity of the material subjected to biodegradation simulation processes under natural environmental conditions.…”

Section: Resultsmentioning

confidence: 99%

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Study of morphological, structural, and thermal changes of biodegradable material in simulated natural environmental conditions

Imbachi‐Hoyos

Salazar‐Sánchez

Solanilla‐Duque

2022

Environmental Quality Mgmt

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Polymers with low environmental impact are of great interest worldwide to reduce greenhouse gases (CO 2 and CH 4 ) and soil and water contamination. Evaluating the biodegradation process of biopolymeric matrices obtained from different biodegradable biopolymers is a priority. This work evaluated the behavior of a foamed material based on biopolymers under the ISO 14855-2: 2007 standard under simulated natural environmental conditions and its ecotoxic potential of the material residues in the growth of seeds Phaseolus vulgaris. A percentage of biodegradation was obtained in the TPS/PLA samples: 84.7 ± 0.3%; 0% MG: 89.1 ± 0.4%; 2% MG: 82.4 ± 0.4%; 3% MG: 82.0 ± 0.%1; 6% MG: 81.0 ± 0.3%; TPSEG: 66.7 ± 2.4%, and TPSE: 62.9 ± 1.0%; having microcrystalline cellulose as a control sample. CH stretch bands were identified at 728 cm -1 related to PBAT vibration that remained constant in the samples containing PHA, evidencing that this material is not an alternative to elaborate foamed materials to improve their biodegradation. Protein-based samples increase their biodegradation rate, while based samples PHA remain resilient over time due to the blend of the polymer and the presence of PLA (1437.5 cm -1 ). The low or high decomposition of the material in weight loss corroborated this behavior of both blends. Regarding the ecotoxicity of the samples, there was no significant difference.

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Section: Differential Scanning Calorimetry (Dsc)supporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Study of morphological, structural, and thermal changes of biodegradable material in simulated natural environmental conditions

Imbachi‐Hoyos

Salazar‐Sánchez

Solanilla‐Duque

2022

Environmental Quality Mgmt

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“…These synthetic polymers have been used for applications not only in the medical field [6,7] but also as environmentally friendly materials. [8,9] To widen the range of physical and chemical properties, there are also several published studies on chainend modification [10] and copolymerization. [11][12][13][14] For decades, attempts have been made to create novel synthetic degradable polymers for various uses by designing them at the molecular level.…”

Section: Introductionmentioning

confidence: 99%

Thermal Property Control by Copolymerization of Trimethylene Carbonate and Its Derivative Bearing Triphenylmethyl Group

et al. 2022

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In order to tune the thermal properites of ester-free type poly(trimethylene carbonate) (PTMC) derivatives, the copolymers of trimethylene carbonate (TMC) and a TMC derivative bearing a triphenylmethyl group (TrTMC) were synthesized with various copolymerization ratios. The copolymers of TMC and TrTMC were obtained by varying the feeding ratio of their monomers with good yields as hexane-isopropanol (9/1, v/v) insoluble part. The structures were confirmed by both FT-IR and 1 H NMR spectra, showing the copolymer composition was controlled in a good manner. The thermal degradation temper-ature at 10 % weight loss gradually increased from 198 °C to 301 °C, depending on the introduced amount of TrTMC, indicating that the thermal decomposition was based on the monomer unit structure. The glass transition temperatures of copolymers also gradually increased from À 38 °C to 57 °C. These results show that the thermal properties of the ester free type TMC derivatives could be overcome by the copolymerization, and that the thermal properties could be varied by controlling the feed ratio of comonomers.

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“…Poly( l -lactide) (PLLA)-based polymers have been extensively studied for various potential applications due to the biodegradability of PLLA. , The self-assembling behaviors of PLLA homopolymers and PLLA-based copolymers have also been explored, and the self-assembly processes are mainly driven by crystallization-driven self-assembly (CDSA) because of the semicrystalline nature of PLLA. − However, to the best of our knowledge, HE-caused self-assembly of hydrophobic PLLA homopolymers has not been studied at the molecular level. Therefore, we explored the aqueous self-assembly of charge-terminated PLLA homopolymers (PLLA[PPh 2 Me]I), which would be beneficial to understand HE and create aqueous colloids desirable for further potential applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrophobic Hydration on the Self-Assembling Behavior of Poly (l-Lactide) Homopolymers with an Ionic End Group

et al. 2022

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The investigation of hydrophobic hydration as a hydrophobic effect (HE) on the conformations and self-assembling behaviors of terminally charged poly (L-lactide) (PLLA[PPh 2 Me]I) in tetrahydrofuran (THF)/water with various water contents is reported. The backbone was hydrated while the ionic end group was not hydrated at a lower water content (33.3%), and consequentially PLLA[PPh 2 Me]I self-assembled into fibers. As the water content increased to 50.0%, ion pair end groups were hydrated and exerted a long-range dehydrating effect on the backbone, endowing chain spiralization via intramolecular C−H•••O�C hydrogen bonds and leading to the formation of spheres. At 60.0% water content, the long-range effect of hydrated water on the ion pair end groups completely removed the hydration water from the backbone, and so the macromolecules possessed a certain degree of amphiphilicity and self-assembled into vesicles. The elucidation of hydrophobic hydration is desirable for improving HE-caused self-assembly and understanding biological systems.

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Synthetic Biodegradable Polymers with Chain End Modification: Polylactide, Poly(butylene succinate), and Poly(hydroxyalkanoate)

Cited by 9 publications

References 187 publications

Study of morphological, structural, and thermal changes of biodegradable material in simulated natural environmental conditions

Study of morphological, structural, and thermal changes of biodegradable material in simulated natural environmental conditions

Thermal Property Control by Copolymerization of Trimethylene Carbonate and Its Derivative Bearing Triphenylmethyl Group

Effect of Hydrophobic Hydration on the Self-Assembling Behavior of Poly (l-Lactide) Homopolymers with an Ionic End Group

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