Solvent degradation of nylon-6 and its effect on fiber morphology of electrospun mats |
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| Authors: | Ki-Taek Nam Hem Raj Pant Jin-won Jeong Bishweshwar Pant Byeong-il Kim Hak-Yong Kim |
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| Institution: | aDepartment of Organic Materials and Fiber Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea;bDepartment of Bionanosystem Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea;cDepartment of Engineering Science and Humanities, Institute of Engineering, Tribhuvan University, Kathmandu, Nepal;dHuvis Corporation, Daedeok-gu, Daejeon 306-230, Republic of Korea |
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| Abstract: | In this work, we studied solvent-induced polymer degradation and its effect on the morphology of electrospun fibers. Nylon-6 in formic acid solvent was allowed to degrade by simply allowing it to stand for a long time, and nanofibrous mats were fabricated by taking a fraction of this solution at different time intervals via electrospinning under the same electrospinning conditions. FE-SEM images of the mats indicate that the nanofiber diameter gradually decreased with the standing time of solution, and large numbers of true nano fibers (<50 nm in diameter) were obtained. MALDI-TOF analysis revealed that the formation of low-molecular weight ions was caused by solvent degradation. FT-IR, DSC, XRD, and TGA analyses of electrospun mats showed that some physical properties, such as bond strength, crystallinity, and thermal stability also depended on solvent degradation. The obtained sub-nanofibrous mat has potential applications in different bioengineering fields. |
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| Keywords: | Electrospinning Degradation Nylon-6 True nano fibers |
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