Zhou Jianfeng, Zheng Dandan, Zhang Fengxiu, Zhang Guangxian
College of Textiles & Garments, Southwest University, Chongqing 400716, China; Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, 400716, China.
School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
Mater Sci Eng C Mater Biol Appl. 2016 Dec 1;69:1290-6. doi: 10.1016/j.msec.2016.08.042. Epub 2016 Aug 16.
In this paper, reactive -NH2 groups (8.36×10(-6)mol/g fabric) were introduced to the surface of polyethylene terephthalate (PET) fabrics by a nitration and reduction method, and epoxy groups were introduced to silkworm pupa protein (SPP) by reaction with epoxy chloropropane. PET-SPP composite fabrics were then prepared by reaction of these two precursors. The results showed that the SPP was firmly grafted onto the PET fabric surface and that the hydrophilicity of the fabric was markedly improved by the grafting of SPP. SEM images revealed a layer of substance covering the surface of the PET fibers, and XPS investigation showed that the nitrogen content of the PET-SPP fabric was higher than that of the original PET fabric (2.32% vs 0%). ATR-FTIR adsorption bands at 1653 and 1543cm(-1) suggested the successful grafting of SPP onto the PET fabric surface. The DSC and TG of the PET fibers demonstrated that the thermal stability of the original PET fibers was maintained well by the SPP-grafted PET fibers. The breaking strength, bending rigidity, air permeability, and crease recovery angle of the original PET fabric were also retained by the SPP-grafted PET fabric.
本文通过硝化还原法将反应性-NH₂基团（8.36×10⁻⁶mol/g织物）引入聚对苯二甲酸乙二酯（PET）织物表面，并通过与环氧氯丙烷反应将环氧基团引入蚕蛹蛋白（SPP）。然后通过这两种前体的反应制备了PET-SPP复合织物。结果表明，SPP牢固地接枝到PET织物表面，并且通过接枝SPP显著提高了织物的亲水性。扫描电子显微镜（SEM）图像显示PET纤维表面覆盖有一层物质，X射线光电子能谱（XPS）研究表明PET-SPP织物的氮含量高于原始PET织物（2.32%对0%）。在1653和1543cm⁻¹处的衰减全反射傅里叶变换红外光谱（ATR-FTIR）吸收带表明SPP成功接枝到PET织物表面。PET纤维的差示扫描量热法（DSC）和热重分析法（TG）表明，接枝SPP的PET纤维很好地保持了原始PET纤维的热稳定性。接枝SPP的PET织物也保留了原始PET织物的断裂强度、弯曲刚度、透气率和折皱回复角。
