Melt polycondensation of poly (butylene oxalate-co-succinate) with great potential in curbing marine plastic pollution

Luan, Qingyang; Hu, Han; Jiang, Xiaoyu; Lin, Chao; Zhang, Xiaoqin; Wang, Qianfeng; Dong, Yunxiao; Wang, Jinggang; Zhu, Jin

doi:10.1016/j.jhazmat.2023.131801

Cited by 12 publications

(6 citation statements)

References 38 publications

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“…The 1 H NMR spectra of PESS30, PESS50, and PESS70 before and after degradation are shown in Figure . For PESS30, the Φ SS calculated by integrating the protons g and a ( Φ SS = 2 I g / I a ) increased from 31.3% to 68.0% then decreased to 62.5%, as the main degradation was the ES segment Figure b depicts the 1 H NMR spectra of PESS50 before and after degradation, revealing a similar pattern to that of PESS30.…”

Section: Resultsmentioning

confidence: 73%

“…For PESS30, the Φ SS calculated by integrating the protons g and a (Φ SS = 2I g /I a ) increased from 31.3% to 68.0% then decreased to 62.5%, as the main degradation was the ES segment. 46 Figure 9b depicts the 1 H NMR spectra of PESS50 before and after degradation, revealing a similar pattern to that of PESS30. However, the growth of SS chain segments after acid treatment was smaller than that of PESS30, indicating that the higher spiroglycol unit content was incorporated into the copolyester, and the more acidic degradation was triggered by the acidic environment.…”

Section: ■ Introductionmentioning

confidence: 69%

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High-Barrier-Property Copolyesters Based on Spiroglycol with Controlled Degradation

Yin,

Zhang,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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Finding a balance between thermo-mechanical properties and degradation properties is important for degradable polyesters to dissolve, addressing environmental problems. In this work, spiroglycol, an acetal monomer with symmetrical rigid spirocycles which can effectively increase the glass transition temperature (T g) of polymers and easily hydrolyze in acidic environments, was introduced into poly(ethylene succinate) (PES) to synthesize poly(ethylene succinate-co-spirocyclic succinate) (PESS) copolyesters with contents ranging from 10 to 80 mol % spiroglycol units via melt polycondensation. As the spiroglycol unit content increases, the T g, thermal resistance, and mechanical and barrier properties of the PESS copolyesters were obviously improved. Specifically, the glass transition temperature of PESS50 was enhanced up to 33.2 °C and it had a tensile modulus of 1398 MPa and tensile strength of 20.2 MPa, with an elongation at break of 333.4%. In addition, the barrier properties of PESS50 are significantly higher compared to PBAT and can achieve the purpose of food freshness preservation. The acidic cleavage of the spiroglycol unit can be accomplished in an acidic environment, while the ester bond can be hydrolyzed in an enzyme environment, achieving the goal of controlled degradation. As a result, while ensuring a certain degree of degradation performance, the thermo-mechanical properties have been improved.

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Section: Resultsmentioning

confidence: 73%

Section: ■ Introductionmentioning

confidence: 69%

High-Barrier-Property Copolyesters Based on Spiroglycol with Controlled Degradation

Yin,

Zhang,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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“…The oxalate group has higher reactivity compared with common ester groups, which can be attributed to the strong electrophilicity caused by the electron-withdrawing effect of the neighbouring carbonyl groups. 9 The reactivity of n -alkyl diols also increased with the increase of carbon chain length. 7,16–18 This inspired us to explore catalyst-free preparation of HWM PAOs.…”

Section: Introductionmentioning

confidence: 99%

“…Wei et al used 0.12 mol% tetrabutyl titanate (TBT) as the catalyst to give yellow PAOs in 8 h with weight-average molecular weights ( M w ) of 40–80 kDa. 7 Miller et al used para -toluene sulfonic acid ( p -TSA) as the catalyst at 2 mol% to prepare PAOs ( M w = 33–71 kDa) in 6 h. 8 Wang and Hu et al adopted antimony oxide as the catalyst to obtain pale yellow poly(butylene oxalate) ( M w ∼ 75 kDa) in 15–22 h. 9 The high loading of metal catalysts is beneficial to shorten the reaction time. Nonetheless, the drawback of catalyst-related discoloration of the products is difficult to avoid, particularly when high-efficiency metal catalysts are used.…”

Section: Introductionmentioning

confidence: 99%

Catalyst-free synthesis of high-molecular weight poly(alkylene oxalate)s

Wang,

Chen,

Bai

et al. 2024

Polym. Chem.

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“…The introduction of polyether blocks to synthesize PBS copolyesters could enhance the impact strength. However, the researchers have found that polyether reduces the tensile strength, flexural strength, thermal stability, and hydrolyzing resistance of PBS copolyesters. , To overcome the above defects, there is an urgent need to choose appropriate monomers to enhance the mechanical properties, thermal stability, and hydrophilicity of PBS.…”

Section: Introductionmentioning

confidence: 99%

Copolymers Based on PBS and Polydimethylsiloxane with Improved Properties and Novel Functions: Effect of Molecular Weight of Polydimethylsiloxane

Zhou,

Wang,

Wang

et al. 2023

ACS Sustainable Chem. Eng.

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The serious environmental pollution caused by nonbiodegradable plastics has led to an increased demand for biodegradable plastics. Poly(butylene succinate) (PBS) is a very essential biodegradable polymer because of its good combined properties. But its drawbacks of low impact strength and lack of functionality restrain its application. In this work, polydimethylsiloxane (PDMS) is used to synthesize the diatom-like structure poly(butylene succinate)-b-polydimethylsiloxane (PBSP), and the effect of molecular weight on the structure and properties is investigated systematically for the first time. The unique layered structure limited by the covalently connected blocks endowed PBSP with an excellent combined performance. The resulting PBSP possesses good thermal and mechanical properties. The mechanical properties improved substantially; especially, the impact strength increased evidently from 34.6 J/m of PBS to 162.5 J/m of PBSP. Furthermore, PDMS blocks endow the copolymers with good hydrophobicity and antismudge and self-healing properties, which greatly broadens the application range of the PBS materials. The surface analysis and Flory–Huggins solution theory testified that the PDMS blocks with higher molecular weight preferentially enriched the surface and sublayer of the material, due to the huge difference in solubility parameters between PBS and PDMS. PBSP with regulatable mechanical properties and functions could be obtained by changing the molecular weight of the PDMS blocks.

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Melt polycondensation of poly (butylene oxalate-co-succinate) with great potential in curbing marine plastic pollution

Cited by 12 publications

References 38 publications

High-Barrier-Property Copolyesters Based on Spiroglycol with Controlled Degradation

High-Barrier-Property Copolyesters Based on Spiroglycol with Controlled Degradation

Catalyst-free synthesis of high-molecular weight poly(alkylene oxalate)s

Copolymers Based on PBS and Polydimethylsiloxane with Improved Properties and Novel Functions: Effect of Molecular Weight of Polydimethylsiloxane

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