超临界CO2协助甲基丙烯酸甲酯接枝改性丝素蛋白纤维

Grafting of Methyl Methacrylate onto Silk Fiber with the Assistance of Supercritical CO2

利用超临界CO2做溶剂及携带剂协助甲基丙烯酸甲酯（MMA）接枝改性柞蚕丝素蛋白纤维。红外、扫描电镜及热分析表明：超临界CO2溶胀聚合的方法可以使MMA与丝素纤维发生接枝反应，聚甲基丙烯酸甲酯可以与丝素纤维牢固接合。并且接枝MMA单体可以改善纤维的吸水性和机械性能。

Graft copolymerization of MMA-BPO onto Antheraea pernyi silk fibers was investigated using supercritical CO2 as a solvent and carrier. The structural properties of MMA-grafted fiber were characterized by Fourier transform infrared spectroscopy （FTIR） .scanning electron microscopy （SEM） and thermogravimetric analysis （TG）. Grafted MMA was chemically bonded and/or physically adhered to the surfaces of the fibers. The water-retention values （WRVs） indicated the hydrophobic nature of the fibers was improved.