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Abstract
Methyl methacrylate (MMA) was grafted onto silk fiber in a one-step emulsion system using a diethylzinc and 1,10-phenanthroline complex. The reaction conditions were investigated by varying temperature and initiator to monomer ratio. Fourier transform infrared (FTIR) spectrum, thermogravimetric analysis (TGA), and scanning electron microscopy (SEC) techniques were used to characterize the structure, thermal stability, and surface morphology of the obtained product, respectively. Grafting of MMA onto silk increased the thermal stability of silk. The FTIR spectrum and SEM images provided further evidence that MMA has been successfully grafted onto the silk fiber. A peak ascribed to the C=O stretching vibration of MMA was detected in the FTIR spectrum of grafted silk fiber, which was not present in the spectrum of pure silk fiber. Moreover, the SEM images illustrated the increase in diameter and surface roughness of grafted silk compared with pure silk. Lastly, the dyeing performance of the modified silk was significantly increased.
Highlights
Silk is one of the most highly sought nature fibers, which presents many excellent properties, such as high moisture absorbency, good biocompatibility, and graceful luster [1] [2]
These results suggested that within the range of I:M ratios selected in this study, increasing the amount of initiator caused the bi-radical termination of excessive radicals, and caused the grafting rate to decrease
Graft polymerization of Methyl methacrylate (MMA) onto silk fiber in an aqueous system using the Phen-DEZ complex as initiator was carried out, and the reaction presented high graft yield
Summary
Silk is one of the most highly sought nature fibers, which presents many excellent properties, such as high moisture absorbency, good biocompatibility, and graceful luster [1] [2]. Owing to these features, silk fibers are widely used for decorations, clothes, and other products useful for the human body [3]. There are some limitations to the applications of silk, which are mainly attri-
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