The influence of porous PTFE/PE/PP electrets prepared by heat melting method with
different surface potential on the transdermal delivery of lidocaine through mouse skin has been studied
by using high performance liquid chromatography(HPLC).The results show that although both the
negative and positive electret could promote the lidocaine transdermal delivery,the positive electret
showed much higher enhancing effect than negative electret.Moreover,the enhancing effect of the
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