改性酪蛋白/羧甲基纤维素钠共混纤维制备与性能
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摘要
采用湿法纺丝,以乙醇、氯化钙和盐酸的混合溶液为凝固浴制备了改性酪蛋白(CLC)/羧甲基纤维素钠(CMC-Na)共混纤维。通过测试纺丝液流动性以及纤维的红外光谱、表面形态和力学性能,研究了CLC和CMC-Na不同配比与纺丝溶液pH改性后酪蛋白纤维的力学性能增加,纺丝溶液的流动性与CMC-Na维的红外光谱分析表明CLC与CMC-Na之间有良好的相互作用。CMC-Na质量分数为30%(相对于改性酪蛋白)的共混纤维性能较好,纤维表面较致密,有沿着纤维轴向取向的明显条纹,其断裂强度为341.19MPa。
The blend fiber of modified casein and sodium carboxymethyl cellulose was prepared by wet spinning with ethanol, calcium chloride and hydrochloric acid as coagulation bath. The effects of different ratios of modified casein and sodium carboxymethyl cellulose and pH value of spinning solution on the molecular structure, surface morphology and mechanical properties of the fibers were studied by measuring the fluidity of spinning solution, infrared spectroscopy, surface morphology and mechanical properties of the fibers. The results show that the mechanical properties of casein fibers increase after modification. The fluidity of the spinning solution is directly proportional to the content of sodium carboxymethyl cellulose,and is inversely proportional to pH value of spinning solution. Infrared spectrum analysis shows that there is a good interaction between modified casein and sodium carboxymethyl cellulose. The blend fiber with 30%CMC-Na(relative to modified casein) has better properties, the surface of the blend fiber is denser with obvious stripes along the fiber axis, and the breaking strength is 341.19 MPa.
The blend fiber of modified casein and sodium carboxymethyl cellulose was prepared by wet spinning with ethanol, calcium chloride and hydrochloric acid as coagulation bath. The effects of different ratios of modified casein and sodium carboxymethyl cellulose and pH value of spinning solution on the molecular structure, surface morphology and mechanical properties of the fibers were studied by measuring the fluidity of spinning solution, infrared spectroscopy, surface morphology and mechanical properties of the fibers. The results show that the mechanical properties of casein fibers increase after modification. The fluidity of the spinning solution is directly proportional to the content of sodium carboxymethyl cellulose,and is inversely proportional to pH value of spinning solution. Infrared spectrum analysis shows that there is a good interaction between modified casein and sodium carboxymethyl cellulose. The blend fiber with 30%CMC-Na(relative to modified casein) has better properties, the surface of the blend fiber is denser with obvious stripes along the fiber axis, and the breaking strength is 341.19 MPa.
引文
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[5]CUI L,REDDY N,XU H L,et al.Enzyme-modified casein fibers and their potential application in drug delivery[J].Fibers and Polymers,201718(5):900-906
[6]阮超明.牛奶蛋白改性聚丙烯腈纤维结构及其性能研究[D].上海东华大学,2008.
[7]THOMAS Balasingh Sudha,PALANISAMY Thanikaivelan,MEIYAZHAGAN Ashokkumar,et al.Structural and thermal investigations of bio mimetically grown casein-soy hybrid protein fibers[J].Applied Biochemis try&Biotechnology,2011,163(2):247-257.
[8]郭昌盛,蒋芳,林海涛.牛奶蛋白纤维的性能及应用[J].成都纺织高等专科学校学报,2016,33(4):170-172.
[9]牟星.甲醇、戊二醛交联剂对丝素蛋白/明胶冷冻干燥多孔支架的性能影响[D].兰州:兰州大学,2014.
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[12]展义臻,朱平,王炳,等.羧甲基纤维素钠/海藻酸钠共混纤维的制备与性能测试[J].合成纤维,2006,(12):6-10.
[13]周振芳.大豆蛋白/聚丙烯睛共混纤维的研制[D].上海:东华大学2007.
[14]陈其铽,赵海云.羧甲基纤维素钠黏度测试研究[J].食品与药品2014,16(3):207-209.
[15]刘微,李萌,任皓威,等.紫外和红外光谱分析人乳和牛乳β-酪蛋白的功能和构象差异[J].光谱学与光谱分析,2014,34(12):3281-3287
[16]CARLOS Salas,MARIKO Ago,LUCIAN A Lucia,et al.Synthesis o soy protein-lignin nanofibers by solution electrospinning[J].Reactive and Functional Polymers,2014,85(12):221-227.
[17]王启芬,王成国,王延相,等.PAN纤维的结构对纤维强度的影响[J].功能材料,2006(11):1787-1789.