Multiblock poly(ether-b-amide) copolymers comprised of PA1212 and PPO-PEO-PPO with specific moisture-responsive and antistatic properties

Jiang, Jie; Cheng, Wei; Tang, Qiuyu; Pan, Xun; Li, Jinjin; Zhao, Liang; Xi, Zhenhao; Wang, Yuan

doi:10.1016/j.cjche.2022.01.010

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…There is only one thermal transition observed in the temperature range, which suggests one glass transition temperature ( T g ). It is indicated that the amorphous phase of PBSF and PEG segments are miscible, and PBSFG shows a microphase separation effect that restricted the chain mobility leading to the large temperature range of glass transition. , The T g values of PBSF0G, PBSF5G, PBSF10G, PBSF20G, and PBSF30G, as determined from the peak maxima of tan δ, are −28.22, −24.80, −24.45, −23.10, and −21.26 °C, respectively. The T g of PBSFG shows a slight increase with the rise in the fumaric acid content in PBSFG, primarily because the PBF segment exhibits higher rigidity compared with the PBS segment.…”

Section: Resultsmentioning

confidence: 99%

Supertough and Biodegradable Poly(Lactic Acid) Blends with “Hard–Soft” Core–Shell Unsaturated Poly(ether-ester) through Self-Vulcanization

Yang,

Cai,

Han

et al. 2023

Macromolecules

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The development of a biodegradable material with super toughness while preserving its biodegradability poses a significant challenge. In this study, a series of biodegradable unsaturated multiblock poly(ether-ester) poly(butylene succinateco-fumarate)-poly(ethylene glycol) (PBSFG) was synthesized and blended with polylactic acid (PLA). The impact of fumaric acid in PBSFG on the mechanical and degradation behavior of PLA/PBSFG blends was investigated. The results revealed that fumaric acid facilitated self-vulcanization of PBSFG, thereby leading to the formation of a "hard−soft" core−shell rubber phase within PLA. The core comprised the poly(butylene succinate-co-fumarate) (PBSF) segment, while the shell consisted of the PEG chain segment. The notched impact strength and elongation at break of PLA/PBSF20G blends showed significant improvements compared with pure PLA, with values of 76.1 kJ/m 2 and 303.1%, respectively. These values are 24 and 101 times higher than those of pure PLA. Furthermore, enzymatic degradation experiments were conducted on the PLA/ PBSFG blends, which demonstrated that the fumaric acid content significantly accelerated the degradation rate. The degradation rate of PLA/PBSF30G even surpassed that of pure PLA. Ultimately, this work successfully yielded fully degradable and supertough PLA blends.

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Section: Resultsmentioning

confidence: 99%