盐浓度与海藻酸钠/磷虾蛋白复合体系性能的相关性

doi:10.7503/cjcu20170015

高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (9): 1701.doi: 10.7503/cjcu20170015

• 高分子化学 • 上一篇

盐浓度与海藻酸钠/磷虾蛋白复合体系性能的相关性

吴静¹, 郭静^1,²(), 张森^1,², 宫玉梅^1,², 张鸿^1,²

1. 大连工业大学纺织与材料工程学院, 大连 116034
2. 辽宁省功能纤维及复合材料工程技术中心, 大连 116034

收稿日期:2017-01-05 出版日期:2017-09-10 发布日期:2017-05-19
作者简介:联系人简介: 郭静, 女, 博士, 教授, 主要从事高分子材料改性与加工研究. E-mail: guojing8161@163.com
基金资助:
国家自然科学基金(批准号: 51373027)和辽宁省自然科学基金(批准号: 2015020221)资助

Correlativity of Characterization for Sodium Alginate/Antarctic Krill Protein by Salt Concentration^†

WU Jing¹, GUO Jing^1,^2,^*(), ZHANG Sen^1,², GONG Yumei^1,², ZHANG Hong^1,²

1. School of Textile and Engineering, Dalian Polytechnic University, Dalian 116034, China
2. Functional Fiber and Its Composite Materials Engineering Technology Research Center in Liaoning Province, Dalian 116034, China

Received:2017-01-05 Online:2017-09-10 Published:2017-05-19
Contact: GUO Jing E-mail:guojing8161@163.com
Supported by:
† Supported by the National Natural Science Foundation of China(No.51373027) and the Natural Science Found of Liaoning Province, China(No.2015020221)

摘要/Abstract

摘要：

采用湿法纺丝技术制备了海藻酸钠/磷虾蛋白(SA/AKP)复合纤维, 通过傅里叶变换红外光谱(FTIR)分析了SA/AKP复合体系的氢键相互作用, 用X射线衍射仪、流变仪及SEM研究了盐(NaCl)浓度对复合体系的结晶、流动性和形态结构的影响. 结果表明, SA/AKP复合体系中存在分子内和分子间氢键, 分子间氢键的强度随复合材料中盐浓度的增加而增强. 盐浓度的增加导致SA/AKP复合材料的结晶度增加, 流动黏度先降低后增加, 力学性能先增加后降低. SA/AKP纤维的SEM照片显示结晶的盐与纤维分离, 并且复合纤维表面沟槽结构逐渐减少, 表面更加致密光滑. AKP在SA/AKP复合体系中呈完全取向状态.

关键词: 海藻酸钠/磷虾蛋白复合纤维, 共混体系, 湿法纺丝, 盐(氯化钠)浓度

Abstract:

Sodium alginate/antarctic krill protein composite material(SA/AKP) was obtained by wet spinning. The hydrogen bonds of SA/AKP composite material were analyzed by Fourier transform infrared spectroscopy(FTIR), the effects of salt concentration on the crystallinity, fluidity and morphology of the composite material were studied by XRD, rheometer and SEM. Experiment manifested the existence of intramolecular and intermolecular hydrogen bonds in SA/AKP system. The strength of intermolecular hydrogen bonds was enhanced with the increase of NaCl in the composite material. At the same time, the increase of salt concentration led to SA/AKP composite material’s crystallinity increasing, the rheological properties decreasing at first and then increasing, and mechanical properties increasing at first and then decreasing. SA/AKP fiber SEM images showed that crystallized salt was separated from the fiber, and the surface structure of the composite fiber gradually decreased and became denser and smoother.Finally, AKP was completely oriented in the SA/AKP composite system.

Key words: Sodium alginate/Antarctic krill protein composite fiber, Bleng system, Wet spinning, Salt(NaCl) concentration

中图分类号:

TrendMD:

吴静, 郭静, 张森, 宫玉梅, 张鸿. 盐浓度与海藻酸钠/磷虾蛋白复合体系性能的相关性. 高等学校化学学报, 2017, 38(9): 1701.

WU Jing, GUO Jing, ZHANG Sen, GONG Yumei, ZHANG Hong. Correlativity of Characterization for Sodium Alginate/Antarctic Krill Protein by Salt Concentration^†. Chem. J. Chinese Universities, 2017, 38(9): 1701.

图/表 16

Fig.1 FTIR spectra of AKP(a)and SA(b)

Fig.2 FTIR spectra of SA/AKP composite fiberc(NaCl)/(g·L-1): a. 0; b. 1; c. 2; d. 3.

Fig.3 Hydrogen bonding mechanism of sodium alginate and antarctic krill protein

Fig.4 Absorbance spectra of AKP(a), SA(b) and SA/AKP composite fiber(c)

Fig.5 Two-order derivative spectra of AKP(a), SA(b) and SA/AKP composite fiber(c)

Fig.6 Gauss fitting of SA(A) and SA/AKP[c(NaCl)=0(B), 1 g/L(C)] composite fiber a. —OH; b. OH…π; c. OH…OH; d. OH…O(etheric); e. OH annular polymer; f. OH…N.

Table 1 Fitting results of various hydrogen bond types

Sample	Hydrogen bond type		$ν ˙$ /cm^-1	Peak area	Proportion(%)
Sodium alginate	Free hydroxyl	—OH	3598	7.34	5.8
	Intermolecular hydrogen bonds	OH…π	3530	33.09	26.1
		OH…O(etheric)	3300	68.75	54.2
SA/AKP composite fiber	Intramolecular hydrogen bonds	OH…OH	3411	17.62	13.9
without salt	Free hydroxyl	—OH	3600	10.22	7.5
	Intermolecular hydrogen bonds	OH…π	3484	68.09	49.7
		OH…O(etheric)	3328	28.29	20.6
		OH…N	3129	11.46	8.4
Salt concentration of 2 g/L	Intramolecular hydrogen bonds	OH…OH	3406	5.35	3.9
SA/APK composite fiber		OH cyclic polymer	3228	13.66	9.9
	Free hydroxyl	—OH	3597	12.14	1.2
	Intermolecular hydrogen bonds	OH…π	3526	106.28	10.5
		OH…O(etheric)	3300	160.36	15.8
		OH…N	3143	121.24	11.9
	Intramolecular hydrogen bonds	OH…OH	3408	488.72	48.1
		OH cyclic polymer	3228	126.41	12.5

Table 1 Fitting results of various hydrogen bond types

Sample	Hydrogen bond type		$ν ˙$ /cm^-1	Peak area	Proportion(%)
Sodium alginate	Free hydroxyl	—OH	3598	7.34	5.8
	Intermolecular hydrogen bonds	OH…π	3530	33.09	26.1
		OH…O(etheric)	3300	68.75	54.2
SA/AKP composite fiber	Intramolecular hydrogen bonds	OH…OH	3411	17.62	13.9
without salt	Free hydroxyl	—OH	3600	10.22	7.5
	Intermolecular hydrogen bonds	OH…π	3484	68.09	49.7
		OH…O(etheric)	3328	28.29	20.6
		OH…N	3129	11.46	8.4
Salt concentration of 2 g/L	Intramolecular hydrogen bonds	OH…OH	3406	5.35	3.9
SA/APK composite fiber		OH cyclic polymer	3228	13.66	9.9
	Free hydroxyl	—OH	3597	12.14	1.2
	Intermolecular hydrogen bonds	OH…π	3526	106.28	10.5
		OH…O(etheric)	3300	160.36	15.8
		OH…N	3143	121.24	11.9
	Intramolecular hydrogen bonds	OH…OH	3408	488.72	48.1
		OH cyclic polymer	3228	126.41	12.5

Fig.7 Curves of shear rate and viscosity of SA/APK composite material with different salt concentrations c(NaCl)/(g·L-1): (A) 0; (B) 1; (C) 2; (D) 3. a. 30 ℃; b. 40 ℃; c. 50 ℃.

Fig.8 Relationship between salt concentration and viscosity of SA/APK composite materialc(NaCl)/(g·L-1): a. 0; b. 1; c. 2; d. 3.

Fig.9 Relationship between salt concentration and viscosity SA/APK composite material with different shear ratesShear rate/s-1: a. 1200; b. 1800; c. 2400.

Fig.10 XRD patterns of SA(A) and AKP(B)

Fig.11 XRD patterns of SA/AKP composite material c(NaCl)/(g·L-1): a. 0; b. 1; c. 2; d. 3.

Fig.12 SEM images of SA/APK composite fibers with different salt concentrations c(NaCl)/(g·L-1): (A) 0; (B) 1; (C) 2; (D) 3.

Fig.13 Mechanical Properties of SA/AKP composite fibers

Fig.14 Half-width of the diffraction intensity curve

Fig.15 Orientation model of AKP in SA/AKP composite fiber drawing

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盐浓度与海藻酸钠/磷虾蛋白复合体系性能的相关性

Correlativity of Characterization for Sodium Alginate/Antarctic Krill Protein by Salt Concentration^†

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盐浓度与海藻酸钠/磷虾蛋白复合体系性能的相关性

Correlativity of Characterization for Sodium Alginate/Antarctic Krill Protein by Salt Concentration†

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Correlativity of Characterization for Sodium Alginate/Antarctic Krill Protein by Salt Concentration^†