Citation: . STUDY ON A HYDROPHOBIC-HYDROPHILIC GRADIENT ROD*[J]. Chinese Journal of Polymer Science, ;2004, 22(2): 131-135. shu

STUDY ON A HYDROPHOBIC-HYDROPHILIC GRADIENT ROD*

Received Date: 23 September 2003
Revised Date: 18 October 2003

A hydrophobic-hydrophilic gradient rod with a length of 40 mm and a diameter of 3 mm was prepared by heating a polymethylsilsesquioxane rod in a cylindrical stove with temperature gradient. The rod was thus pyrolyzed under a temperature gradient condition. The organic end of the gradient rod appears hydrophobic with a contact angle of 109.9°while the other end is hydrophilic with a contact angle of 62.4°. The gradient chemical structure and the gradient microstructure along the rod were characterized by FTIR and SEM, respectively.
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