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One-step synthesis of silver nanoparticle-filled nylon 6 nanofibers and their antibacterial properties
- Shi, Quan, Vitchuli, Narendiran, Nowak, Joshua, Noar, Jesse, Caldwell, Jane M., Breidt, Frederick, Bourham, Mohamed, McCord, Marian, Zhang, Xiangwu
- Journal of materials chemistry 2011 v.21 no.28 pp. 10330
- nanoparticles, nylon, nanofibers, polymers, antibacterial properties, silver nitrate, reducing agents, formic acid, Gram-positive bacteria, Gram-negative bacteria, dispersibility, thermal properties
- A novel and facile one-step approach to in situ synthesize silver nanoparticle-filled nylon 6 nanofibers by electrospinning is reported. The method does not need post-treatments and can be carried out at ambient conditions without using additional chemicals. It employs the electrospinning solvent as a reducing agent for in situ conversion of AgNO3 into silver nanoparticles during the solution preparation. The resultant silver nanoparticle-filled nylon 6 hybrid nanofibers show an excellent fibrous structure (fiber diameter at 50–150 nm), with narrow size 2–4 nm silver nanoparticles uniformly dispersed throughout the nylon 6 matrix. DSC analysis shows that the in situ incorporation of silver nanoparticles increased the Tg and crystallinity of the resultant nanofibers. These silver nanoparticle-filled nylon 6 nanofibers exhibit a steady and long-lasting silver ion release behavior, and robust antibacterial activity against both Gram-positive B. cereus and Gram-negative E. coli microorganisms.