Polyelectrolyte brushes: Water Content, Zeta Potential and Mechanical Properties

  • PDF / 333,116 Bytes
  • 6 Pages / 432 x 648 pts Page_size
  • 95 Downloads / 189 Views

DOWNLOAD

REPORT


 3RO\HOHFWURO\WHEUXVKHV:DWHU&RQWHQW=HWD3RWHQWLDODQG0HFKDQLFDO3URSHUWLHV  -RVHED,ULJR\HQ-DJRED,WXUUL-RVp/XLV&DPDFKR(GZLQ'RQDWK6HUJLR0R\D 1CIC biomaGune, Paseo Miramón 182 C, 20009, San Sebastián, Spain. Tel:+34 943 00 53 11 ; E-mail: [email protected] 2 Institute of Medical Physics and Biophysics, Leipzig University, Härtelstrasse 16-18, D-04107, Leipzig, Germany

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