固载化交联蛋白酶聚集体制备及其对蚕丝织物的砂洗效果
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摘要
针对传统碱剂砂洗中蚕丝强力下降明显及褪色严重等问题,利用固载化交联蛋白酶聚集体(ICLPAs)对蚕丝进行砂洗整理。通过对ICLPAs制备工艺条件进行优化,探讨了ICLPAs的稳定性和重复使用性。通过对KES织物风格、毛效、透气性、透湿性、热阻、湿阻、悬垂性、强力的测试,分析了ICLPAs对蚕丝织物的砂洗效果。结果表明:与游离蛋白酶相比,ICLPAs的热稳定性、pH值稳定性和重复使用性均得到提高;利用ICLPAs对蚕丝织物进行砂洗处理,部分丝素发生水解帚化,织物表面产生微绒,织物的柔软性、抗皱性、吸湿透湿性、透气性提高,断裂强力下降; ICLPAs处理后蚕丝织物的弯曲刚度为0. 003 1 cN·cm,悬垂系数为1.97%,折皱回复角为225°,毛效(30 min)为11. 3 cm,透气性为372.1L/(m~2·s),透湿性为2303g/(m~2·d)。
Aiming at the obvious strength decrease and serious fading in silk sanding with conventional alkali agent,the immobilized cross-linked protease aggregates( ICLPAs) were used for sanding of silk fabrics. The preparation conditions of ICLPAs were optimized,and the stability and reusability of ICLPAs were investigated. The properties of ICLPAs-treated fabric were studied by testing KES fabric style,capillary effect,air permeability,moisture penetrability,thermal resistance,wet resistance,drapability and strength. The results show that the thermal stability,p H stability and reusablility of ICLPAs are all improved compared to free protease. The silk fibroin of the ICLPAs-treated fabric is hydrolyzed. The microvelvet is produced on the fabric surface. The softness,wrinkle resistance,moisture absorption,moisture permeability,air permeability increase and the breaking strength decrease. The bending rigidity of the ICLPAs-treated fabric is 0. 003 1 cN·cm and drape coefficient is 1.97%. The crease recovery angle is 225°. The capillary effect( 30 min) of the treated fabric is 11.3 cm. The air permeability is 372. 1 L/( m~2·s) and the moisture penetrability is 2 303 g/( m~2·d).
Aiming at the obvious strength decrease and serious fading in silk sanding with conventional alkali agent,the immobilized cross-linked protease aggregates( ICLPAs) were used for sanding of silk fabrics. The preparation conditions of ICLPAs were optimized,and the stability and reusability of ICLPAs were investigated. The properties of ICLPAs-treated fabric were studied by testing KES fabric style,capillary effect,air permeability,moisture penetrability,thermal resistance,wet resistance,drapability and strength. The results show that the thermal stability,p H stability and reusablility of ICLPAs are all improved compared to free protease. The silk fibroin of the ICLPAs-treated fabric is hydrolyzed. The microvelvet is produced on the fabric surface. The softness,wrinkle resistance,moisture absorption,moisture permeability,air permeability increase and the breaking strength decrease. The bending rigidity of the ICLPAs-treated fabric is 0. 003 1 cN·cm and drape coefficient is 1.97%. The crease recovery angle is 225°. The capillary effect( 30 min) of the treated fabric is 11.3 cm. The air permeability is 372. 1 L/( m~2·s) and the moisture penetrability is 2 303 g/( m~2·d).
引文
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[2]唐淑娟,陈东生,刘世洲.蛋白酶对真丝织物的砂洗整理[J].印染助剂,1998,15(3):19-22.TANG Shujuan,CHEN Dongsheng,LIU Shizhou.Sandwashing of silk fabric by protease[J].Textile Auxiliaries,1998,15(3):19-22.
[3]SCHROEDER M,LENTING HB,KANDELBAUER A.Restricting detergent protease action to surface of protein fibres by chemical modification[J].Applied Microbiology and Biotechnology,2006,72(4):738-744.
[4]CHAICHI Mohammad,ALIJANPOUR Seyyedeh.Glucose chemiluminescence biosensor based on covalent immobilization of enzyme in glutaraldehydefunctionalized glass cell and direct coupling of chitosanInduced Au/Ag alloy nanoparticles[J].Journal of Analytical Chemistry,2016,71(2):163-171.
[5]WANG Bin,WANG Yuejiao,GAO Xiufeng.Utilization of parameters developed in layer-by-layer fabrication of protein-containing films for enzyme immobilization[J].Journal of Biomaterials Science(Polymer Edition),2015,26(17):1312-1326.
[6]KRASNAN Vladimír,STLOUKAL Radek,ROSENBERG Micha.Immobilization of cells and enzymes to lentikats[J].Applied Microbiology&Biotechnology,2016,100(6):2535-2553.
[7]SHELDON Roger.Characteristic features and biotechnological applications of cross-linked enzyme aggregates(CLEAs)[J].Applied Microbiology&Biotechnology,2011,92(3):467-477.
[8]CUI J D,JIA S R.Optimization protocols and improved strategies of cross-linked enzyme aggregates technology:current development and future challenges[J].Critical Reviews in Biotechnology,2015,35(1):15-28.
[9]SONG C,SHENG L,ZHANG X.Preparation and characterization of a thermostable enzyme(Mn-SOD)immobilized on supermagnetic nanoparticles[J].Applied Microbiology and Biotechnology,2012,96(1):123-32.
[10]TUMTURK H,YUKSEKDAG H.Acetylcholinesterase immobilized onto PEI-coated silica nanoparticles[J].Artificial Cells,Nanomedicine&Biotechnology,2016,44(2):443-447.