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Generation of multihollow structured poly(methyl methacrylate) fibers by electrospinning under pressurized CO 2
Author(s) -
Okamoto Koichi,
Machmudah Siti,
Kanda Hideki,
Goto Motonobu
Publication year - 2016
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24302
Subject(s) - electrospinning , materials science , microfiber , methyl methacrylate , polymer , dichloromethane , composite material , poly(methyl methacrylate) , methacrylate , evaporation , spinning , chemical engineering , solvent , copolymer , organic chemistry , chemistry , physics , engineering , thermodynamics
Electrospinning is one of the simple techniques for the production of polymer nano‐microfibers. In this study, hollow fibers from poly(methyl methacrylate) (PMMA) were formed by electrospinning under pressurized carbon dioxide (CO 2 ) in a single processing step. The experiments were conducted at temperatures and pressures in the range 27–37°C and 4–6 MPa, respectively. At 5 MPa, CO 2 seemed to have enough affinity to dissolve a portion of dichloromethane (DCM) to assist its evaporation. Under subcritical CO 2 , electrospun products with hollow core fibers having diameters of 4–16 μm were generated. The results confirmed that the change of operating parameters had a strong influence on the morphologies (crack or hollows) of the electrospun products. This study demonstrated that this process offers the possibility that electrospinning under pressurized CO 2 will become an essential and useful method for the generation of polymer structures with hollow interiors. POLYM. ENG. SCI., 56:752–759, 2016. © 2016 Society of Plastics Engineers