Title :
Measurement of mechanical properties of nanometer scale polymer structures using atomic force microscope
Author :
Kim, Sung-Kyoung ; Shin, Min Kyoon ; Kim, Seon Jeong ; Lee, Haiwon
Author_Institution :
Dept. of Chem., Hanyang Univ., Seoul
Abstract :
One-dimensional nanofibers of Poly(vinyl alcohol) (PVA) were reinforced by adding biomolecular ferritin nanoparticles. The PVA/ferritin composite nanofibers with diameters around 100 nm were oriented on AFM calibration grating by a modified electrospinning method. The elastic modulus of the nanofibers was tested in three points bending by applying AFM force-curve measurement. The PVA/ferritin nanofibers revealed the enhanced elastic moduli about 2 times higher than those of pure PVA nanofibers. It is suggested that the enhancement of the elastic modulus by ferritin is attributed to hydrogen bondings formed between the peptide chains of the ferritin shell and the PVA matrix. The PVA nanofibers reinforced by ferritin may be applicable to artificial muscles and actuators.
Keywords :
atomic force microscopy; bending; elastic moduli; mechanical variables measurement; nanoparticles; polymer fibres; AFM calibration; actuators; artificial muscles; atomic force microscope; bending; biomolecular ferritin nanoparticles; elastic modulus; force-curve measurement; hydrogen bondings; mechanical properties measurement; modified electrospinning method; nanometer scale polymer structures; one-dimensional nanofibers; poly(vinyl alcohol); Atomic force microscopy; Atomic measurements; Calibration; Force measurement; Gratings; Mechanical factors; Mechanical variables measurement; Nanoparticles; Nanostructures; Polymers; atomic force microscope; composite; elastic modulus; nanofiber;
Conference_Titel :
Nanotechnology Materials and Devices Conference, 2006. NMDC 2006. IEEE
Conference_Location :
Gyeongju
Print_ISBN :
978-1-4244-0540-4
Electronic_ISBN :
978-1-4244-0541-1
DOI :
10.1109/NMDC.2006.4388773
