纺织学报 ›› 2021, Vol. 42 ›› Issue (04): 93-100.doi: 10.13475/j.fzxb.20200400208

• 染整与化学品 • 上一篇    下一篇

毛纱上浆用丁二酸酐酰化明胶浆料的制备及其性能

杨雯静1, 武海良1(), 马建华2,3, 姚一军1, 沈艳琴1   

  1. 1.西安工程大学 纺织科学与工程学院, 陕西 西安 710048
    2.西安工程大学 材料工程学院,陕西 西安 710048
    3.绍兴市柯桥区西纺纺织产业创新研究院, 浙江 绍兴 312030
  • 收稿日期:2020-04-01 修回日期:2021-01-05 出版日期:2021-04-15 发布日期:2021-04-20
  • 通讯作者: 武海良
  • 作者简介:杨雯静(1995—),女,硕士生。主要研究方向为新型毛纱用浆料及浆纱工艺。
  • 基金资助:
    国家重点研发计划资助项目(2017YFB0309100);陕西省重点研发计划项目(2019GY-177);西安工程大学研究生创新基金项目(chx2020003);西安工程大学柯桥纺织产业创新研究院产学研协同创新项目(19KQZD13)

Preparation and properties of succinic anhydride acylated gelatin sizing agent for wool yarn sizing

YANG Wenjing1, WU Hailiang1(), MA Jianhua2,3, YAO Yijun1, SHEN Yanqin1   

  1. 1. School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
    2. School of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
    3. Shaoxing Keqiao West-Tex Textile Industry Innovative Institute, Shaoxing, Zhejiang 312030, China
  • Received:2020-04-01 Revised:2021-01-05 Online:2021-04-15 Published:2021-04-20
  • Contact: WU Hailiang

摘要:

针对明胶在室温凝胶且在毛纱上浆时存在浆膜韧性差的问题,采用丁二酸酐(C4H4O3)对明胶进行酰化改性,合成了一种毛纱室温上浆用改性明胶蛋白(Gel-C4H4O3)浆料。借助红外光谱仪、X射线衍射仪、扫描电子显微镜及差示扫描量热仪对Gel-C4H4O3浆料结构及玻璃化转变温度进行测试表征,系统研究了酰化度与Gel-C4H4O3浆液和浆膜性能的关系。结果表明:C4H4O3可与明胶分子链上的氨基发生酰化反应;与采用丙烯酸、丙烯酰胺、丙烯酸酯类单体接枝改性明胶浆料相比,C4H4O3酰化改性后的明胶浆料在室温时不凝胶;当酰化度为0.96时,Gel-C4H4O3浆液对毛纱表现出优良的黏附性,Gel-C4H4O3浆膜的断裂强度和韧性显著增加。此研究为毛纱室温上浆提供了性能优良的浆料制备方法。

关键词: 改性明胶蛋白浆料, 毛纱上浆, 酰化度, 浆液性能, 浆膜性能, 丁二酸酐

Abstract:

To address the problems of gelatin gelling at room temperature and poor toughness of size film when gelatin is used to sizing wool yarns, the modified gelatin protein (Gel-C4H4O3) for sizing at room temperature was prepared by acylation of gelatin with succinic anhydride (C4H4O3). The structure and glass transition temperature of Gel-C4H4O3 sizing agent were tested and characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscope and differential scanning calorimeter. The relationship between the acylation degree and the size liquid and membrane properties of Gel-C4H4O3 was systematically studied. The results show that C4H4O3 can react with the amino groups on the gelatin molecular chain. Compared with the existing acrylic, acrylamide or acrylate monomers-grafted gelatin, Gel-C4H4O3 exhibited no gel at room temperature. When the acylation degree is 0.96, Gel-C4H4O3 size liquid showed excellent adhesion to wool yarn and the fracture strength and toughness of Gel-C4H4O3 size membrane are significantly increased. It provides an excellent sizing agent preparation method for wool yarn sizing at room temperature.

Key words: modified gelatin protein sizing agent, wool yarn sizing, acylation degree, size liquid property, size membrane property, succinic anhydride

中图分类号: 

  • TS103.846

图1

Gel-C4H4O3浆料的改性机制"

图2

明胶与Gel-C4H4O3浆料的红外光谱图"

表1

明胶与Gel-C4H4O3浆料的氨基酸组成与含量"

氨基酸种类 氨基酸含量
明胶 Gel-C4H4O3浆料
天冬氨酸(Asp) 6.716 8.121
苏氨酸(Thr) 2.465 2.441
丝氨酸(Ser) 5.465 6.989
谷氨酸(Glu) 15.746 15.311
脯氨酸(Pro) 4.136 4.166
甘氨酸(Gly) 6.046 6.465
丙氨酸(Ala) 4.565 5.798
胱氨酸(Cys) 2.065 2.465
缬氨酸(Val) 6.444 6.426
甲硫氨酸(Met) 2.798 2.793
异亮氨酸(Ile) 3.313 3.465
亮氨酸(Leu) 5.265 7.465
酪氨酸(Tyr) 4.999 5.444
苯丙氨酸(Phe) 6.124 6.989
赖氨酸(Lys) 2.999 1.835
组氨酸(His) 2.466 2.311
精氨酸(Arg) 7.456 6.591

图3

C4H4O3与明胶的质量比对浆料酰化度的影响"

图4

明胶及不同酰化度Gel-C4H4O3浆液的流变性"

表2

不同酰化度Gel-C4H4O3浆液的重均分子质量"

酰化度 重均分子量 酰化度 重均分子量
0.43 92 934 0.93 105 436
0.81 93 652 0.96 116 253
0.91 95 943

图5

明胶及不同酰化度Gel-C4H4O3浆液黏度与温度曲线"

图6

酰化度对Gel-C4H4O3浆液黏附性的影响"

图7

明胶及不同酰化度Gel-C4H4O3浆膜的力学性能"

图8

明胶与Gel-C4H4O3浆料的DSC图谱"

图9

明胶与Gel-C4H4O3浆料的X射线衍射图谱"

图10

明胶及不同酰化度Gel-C4H4O3浆膜断面形态(×5 000)"

图11

明胶及不同酰化度Gel-C4H4O3 浆膜的水接触角和水溶时间"

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