化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (9) : 134-138. DOI: 10.19817/j.cnki.issn1006-3536.2022.09.027

新材料与新技术

海藻酸钠/聚赖氨酸复合纤维的制备及其性能研究

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Preparation and property of SA/PL composite fiber

Jin Fangyu¹, Liao Shiqin², Chen Juanfen², Wei Qufu¹, Wang Qingqing^1,2

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Received		Published
2021-05-27		2022-09-20
Issue Date	Revised Date
2022-09-27	2021-05-27

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摘要

以甘油为增塑剂,通过海藻酸钠(SA)分子中的—COO^-与聚赖氨酸(PL)分子中易形成的—NH⁺₃盐式键交联制备了复合纤维。通过扫描电子显微镜观察纤维表面形貌,采用傅里叶变换红外光谱仪、电子单纱强力仪、热重分析仪和X射线衍射仪分别研究了所制备纤维的基本化学性质、力学性能、热稳定性和晶面结构。最后对该复合纤维的抗菌能力进行了评价。结果表明:SA与PL发生了有效交联,SA/PL复合纤维有着较好的力学性能,其断裂强度可达到2.84cN/tex,断裂伸长率可达到10.46%。纤维热稳定性良好,当PL浓度为8%时,对金色葡萄球菌和大肠杆菌的抑菌率可达74.83%和99.69%,且抗菌效果随着PL浓度升高而增大。

Abstract

Using glycerin as plasticizer,the SA/PL composite fiber was prepared by ionic bond crosslinking the —COO^- in the sodium alginate (SA) with the —NH⁺₃ in the polylysine(PL),which was easily formed.The fiber surface morphology was observed by scanning electron microscope.The basic chemical structure,mechanical properties,thermal stability and crystal plane structure of the fiber were analyzed by fourier infrared spectrometer,electronic single yarn strength tester,thermogravimetric analyzer and X-ray diffraction.At the same time,the antibacterial ability of the fiber againsted S.aureus and E.coli was investigated.The results shown that SA and PL were effectively crosslinked.The fiber had good mechanical properties,its breaking strength can reach 2.84cN/tex,the breaking longation can reach 10.46%.The fiber had good thermal stability,and its antibacterial rate againsted S.aureus and E.coli can reach 74.83% and 99.69%,which increased with the increase of PL concentration.

关键词

海藻酸钠 / 聚赖氨酸 / 结晶度 / 力学性能 / 抗菌性能

Key words

sodium alginate / polylysine / crystallinity / mechanical property / antibacterial property

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海藻酸钠/聚赖氨酸复合纤维的制备及其性能研究[J]. 化工新型材料, 2022, 50(9): 134-138 DOI:10.19817/j.cnki.issn1006-3536.2022.09.027

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