Preparation of bio-based polyamide 56/chitosan heavy metal adsorbing nanocomposite fibers by electrospinning

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED Journal of Vinyl & Additive Technology Pub Date : 2024-12-02 DOI:10.1002/vnl.22183

Yuhan Xu, Jinheng Wang, Chenyan Zhang, Jikui Wang, Weihong Guo

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Abstract

Electrospinning technology can produce nanofibers with extremely high specific surface area. Bio-based polyamide 56 (PA56) was combined with chitosan (CS) to prepare PA56/CS composite nanofibers. An in vitro mineralization experiment was conducted to obtain a super hydrophilic composite fiber (PA56/CS-HAP) with hydroxyapatite deposited on the surface. The adsorption performance of the composite fiber (PA56/CS-HAP) was evaluated by the adsorbent dosage, solution pH value, and adsorption kinetics. The curves obtained after fitting the kinetics and adsorption isotherms show that the adsorption behavior under pH = 6 is more consistent with the Langmuir adsorption model. The adsorption capacity in a 100 mg L⁻¹ Pb²⁺ environment is more than 5 times that of 10 mg L⁻¹. Bio-based PA56/CS static-spun nanocomposite fibers prepared by in vitro mineralization have great potential in environmental protection, sensors, chemical engineering, and other fields.

Highlights

PA/CS fibers were prepared by electrospinning.
Hydroxyapatite was deposited by in vitro mineralization technique.
PA/CS-HAP fiber achieves super hydrophilic effect.
The adsorption capacity of PA/CS-HAP in 100 mg L⁻¹ Pb(II) reached 27.5 mg g⁻¹.
After fitting, the adsorption process is consistent with Langmuir adsorption.

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通过电纺丝制备生物基聚酰胺 56/壳聚糖重金属吸附纳米复合纤维

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.