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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引用次数: 0

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.

Abstract Image

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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

静电纺丝技术可以生产出具有极高比表面积的纳米纤维。将生物基聚酰胺56 （PA56）与壳聚糖（CS）结合制备了PA56/CS复合纳米纤维。通过体外矿化实验获得了表面沉积有羟基磷灰石的超亲水性复合纤维（PA56/CS-HAP）。通过吸附剂用量、溶液pH值和吸附动力学对复合纤维（PA56/CS-HAP）的吸附性能进行了评价。拟合动力学和吸附等温线后得到的曲线表明，pH = 6时的吸附行为更符合Langmuir吸附模型。在100mg L−1 Pb2+环境中的吸附量是10mg L−1的5倍以上。体外矿化法制备的生物基PA56/CS静纺纳米复合纤维在环境保护、传感器、化工等领域具有很大的应用潜力。重点采用静电纺丝法制备了PA/CS纤维。采用体外矿化技术沉积羟基磷灰石。PA/CS-HAP纤维具有超强亲水性。PA/CS-HAP对100 mg L−1 Pb（II）的吸附量达到27.5 mg g−1。拟合后，吸附过程符合Langmuir吸附。

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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.