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Two‐in‐One Composite Fibers With Side‐by‐Side Arrangement of Silk Fibroin and Poly( l ‐lactide) by Electrospinning
Author(s) -
Peng Ling,
Jiang Shaohua,
Seuß Maximilian,
Fery Andreas,
Lang Gregor,
Scheibel Thomas,
Agarwal Seema
Publication year - 2016
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201500217
Subject(s) - fibroin , materials science , electrospinning , composite material , silk , scanning electron microscope , composite number , ultimate tensile strength , bombyx mori , lactide , fiber , elongation , annealing (glass) , polymer , polymerization , chemistry , biochemistry , gene
1D fibers of Bombyx mori silk fibroin (SF) and poly( l ‐lactide) (SF‐s‐PLLA) with side‐by‐side parallel arrangement of the two components in a single fiber made by electrospinning are presented. The side‐by‐side arrangement in both randomly oriented and aligned two‐in‐one fibers was confirmed by scanning electron and confocal laser scanning microscope studies. The molecular orientation and secondary structure of SF and PLLA were dependent on the fiber alignment and annealing conditions. The two sides retained their individual secondary structure before and after annealing without affecting each other in a significant way. The two‐in‐one fibers after post treatment with methanol and heat at 80 °C showed tensile strength 16.5 ± 1.4 MPa, modulus 205 ± 20.6 MPa, and an elongation at break of 53 ± 8%.