Coaxial Electrospinning and Characterization of Core-Shell Structured Cellulose Nanocrystal Reinforced PMMA/PAN Composite Fibers

Abstract

A modified coaxial electrospinning process was used to prepare composite nanofibrous mats from a poly(methyl methacrylate) (PMMA) solution with the addition of different cellulose nanocrystals (CNCs) as the sheath fluid and polyacrylonitrile (PAN) solution as the core fluid. This study investigated the conductivity of the as-spun solutions that increased significantly with increasing CNCs addition, which favors forming uniform fibers. This study discussed the effect of different CNCs addition on the morphology, thermal behavior, and the multilevel structure of the coaxial electrospun PMMA + CNCs/PAN composite nanofibers. A morphology analysis of the nanofibrous mats clearly demonstrated that the CNCs facilitated the production of the composite nanofibers with a core-shell structure. The diameter of the composite nanofibers decreased and the uniformity increased with increasing CNCs concentrations in the shell fluid. The composite nanofibrous mats had the maximum thermal decomposition temperature that was substantially higher than electrospun pure PMMA, PAN, as well as the core-shell PMMA/PAN nanocomposite. The BET (Brunauer, Emmett and Teller) formula results showed that the specific surface area of the CNCs reinforced core-shell composite significantly increased with increasing CNCs content. The specific surface area of the composite with 20% CNCs loading rose to 9.62 m2/g from 3.76 m2/g for the control. A dense porous structure was formed on the surface of the electrospun core-shell fibers.

Current progress in application of polymeric nanofibers to tissue engineering

“…If the shell fluid is at too high at concentration, creating a proper morphology of the nanofiber through coaxial electrospinning becomes difficult. Thus, forming coaxial composite nanofibers with excellent morphology requires that the concentration of the solution be as low as possible [56]. Continuous core and hollow fiber structures can also be generated by coaxial electrospinning.…”

Penambahan Nanoselulosa Sekam Padi Terhadap Kekasaran Permukaan Basis Gigi Tiruan Resin Akrilik Polimerisasi Panas

“…Hal ini dapat mengakibatkan tidak menyatunya partikelpartikel karena terdapat perbedaan energi permukaan dan tidak dapat membentuk interaksi yang kuat dengan matriks sehingga tidak homogen. 2,14 Partikel yang tersebar tidak homogen dapat menghasilkan aglomerasi di dalam matriks polimer dan mempengaruhi kekasaran permukaan. 15 Penelitian ini digunakan kitosan 1% sebagai coupling agent.…”

Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and Applications

“…The neural tissue engineering is improved with the PPy, PANi and PEDOT fibrous conductive scaffolds. Also, conductive materials such as PPy, PANi, PLGA/CNF, CNTs and CNTs coated electrospun products are successfully utilized as scaffold materials for cardiac tissue engineering [169,170]. Gaminian et al [171] fabricated cellulose NFs decorated with Ag NPs by electrospinning followed by the deacetylation method.…”