title: Interfacial rheology of natural silk fibroin at air/water and oil/water interfaces.
abstract: The interfacial viscoelastic behavior of natural silk fibroin at both the air/water and oil/water interfaces is reported. This natural multiblock copolymer is found to be strongly amphiphilic and forms stable films at these interfaces. The result is an interfacial layer that is rheologically complex with strong surface elastic moduli that are only slightly frequency-dependent. The kinetics of surface viscoelastic evolution are reported as functions of time for various concentrations of the spread films. Films deposited by Langmuir-Blodgett deposition were studied by scanning electron microscopy (SEM) to reveal a fibrous structure at the interface. The production of stable O/W emulsions by silk fibroin further confirms the generation of the elastic films at the oil/water interfaces.
authors: State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
authors: Lijun
authors: L
authors: Wang
authors: Hongen
authors: H
authors: Xie
authors: Xiuying
authors: X
authors: Qiao
authors: An
authors: A
authors: Goffin
authors: Tom
authors: T
authors: Hodgkinson
authors: Xuefeng
authors: X
authors: Yuan
authors: Kang
authors: K
authors: Sun
authors: Gerald G
authors: GG
authors: Fuller
mesh_terms: D000388:Air; D005349:Fibroins / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D009821:Oils; D012212:Rheology; D047011:Silk / Q000737:chemistry*; D014867:Water
chemical_list: D009821:Oils; D047011:Silk; D014867:Water; D005349:Fibroins