Enhanced stereocomplex crystalline polylactic acids in melt processed enantiomeric bicomponent fiber configurations

Zhao, Renhai; Cai, Shunzhong; Zhao, Yintao; Ning, Xin

doi:10.1016/j.ijbiomac.2023.127123

Cited by 8 publications

(3 citation statements)

References 58 publications

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“…S2b, ESI†). Similar to the XPS results, the FT-IR results confirm the presence of the carboxyl, amide and hydroxyl groups on the surface of C-dots 27–29 (Fig. S3, ESI†).…”

Section: Resultssupporting

confidence: 81%

Carbon quantum dots capped with metal ions for efficient optoelectronic applications

Han,

Li,

Lin

et al. 2024

J. Mater. Chem. C

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“…S2b, ESI†). Similar to the XPS results, the FT-IR results confirm the presence of the carboxyl, amide and hydroxyl groups on the surface of C-dots 27–29 (Fig. S3, ESI†).…”

Section: Resultssupporting

confidence: 81%

Carbon quantum dots capped with metal ions for efficient optoelectronic applications

Han,

Li,

Lin

et al. 2024

J. Mater. Chem. C

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“…This heightened conductivity plays a pivotal role in augmenting the catalytic performance of the composite catalysts. 29–34…”

Section: Resultsmentioning

confidence: 99%

“…Edge sites act as anchoring points to accommodate heteroatoms, and the synergistic effect of edge modulation and heteroatom doping induces charge delocalization of neighboring carbon atoms, generating additional active centers. 35–37 This, in turn, alters the chemical adsorption state of O 2 , effectively weakening the O–O bond and enhancing ORR catalytic activity.…”

Section: Resultsmentioning

confidence: 99%

Carbon dot hybrid porous carbon nanofibers as efficient electrocatalysts for the oxygen reduction reaction

Yuan,

Liu,

Ren

et al. 2024

Mater. Chem. Front.

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An effective strategy for the continuous fabrication of melt‐spun sea‐island bicomponent fibers with structural regulation via stretching

Yu,

Chen,

Zhang

et al. 2024

Polymer Engineering & Sci

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Controlling viscosity in bicomponent melt spinning is crucial for ensuring spinnability and interfacial stability. However, the significant difference in viscosity between PPS and CoPET poses a challenge to establishing the CoPET‐PPS sea‐island melt spinning system. Herein, the viscosity of PPS is regulated by blending high melt index PPS with spinning grade PPS, resulting in a viscosity ratio of CoPET to PPS over 0.5, thereby demonstrating the good spinnability of the CoPET‐PPS spinning system. The mathematical models for velocity, shear rate, and pressure distribution of CoPET‐PPS melts within the sea‐island spinning assembly are developed using Polyflow software, providing theoretical analysis for sea‐island melt spinning. CoPET‐PPS sea‐island bicomponent fibers are successfully fabricated via the facile bicomponent melt spinning technique, guided by the results of capillary rheology and simulation analysis. In addition, the condensed state structure and mechanical properties of CoPET‐PPS sea‐island fibers are significantly enhanced with increasing draw ratios. This straightforward strategy, combined with experimental and numerical simulations, is anticipated to effectively improve the spinnability of multicomponent melt spinning, especially in cases of significant viscosity differences between polymers.Highlights The CoPET‐PPS spinning system was constructed by regulating PPS viscosity. The distribution of the CoPET‐PPS melt in the spinneret holes was simulated. CoPET‐PPS fibers were fabricated based on rheology and simulation results. The mechanical properties of CoPET‐PPS fibers improve with higher draw ratios.

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Enhanced stereocomplex crystalline polylactic acids in melt processed enantiomeric bicomponent fiber configurations

Cited by 8 publications

References 58 publications

Carbon quantum dots capped with metal ions for efficient optoelectronic applications

Carbon quantum dots capped with metal ions for efficient optoelectronic applications

Carbon dot hybrid porous carbon nanofibers as efficient electrocatalysts for the oxygen reduction reaction

An effective strategy for the continuous fabrication of melt‐spun sea‐island bicomponent fibers with structural regulation via stretching

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