Microemulsions for Dermal Drug Delivery Studied by Dynamic Light Scattering: Effect of Interparticle Interactions in Oil‐in‐Water Microemulsions

2003 ◽  
Vol 92 (4) ◽  
pp. 730-738 ◽  
Author(s):  
Anuj Shukla ◽  
Martin Janich ◽  
Konstanze Jahn ◽  
Reinhard H.H. Neubert
Author(s):  
Д.П. Щербинин ◽  
Л.П. Амосова ◽  
А.Е. Большакова ◽  
Е.А. Коншина

It has been shown the possiblity of threshold voltage reducing of dynamic light scattering effect in LC cells. The decrease of the threshold voltage has occurred due to the use of electrodes with metal-dieletric-semiconduxtor micro-structures containing gold nanoparticles. The enhancement of the electrode efficiency contributes to an increase in the conductivity of the cells and to a decrease in the intensity of passed light in the low-voltage region.


RSC Advances ◽  
2013 ◽  
Vol 3 (40) ◽  
pp. 18537 ◽  
Author(s):  
Rui Gao ◽  
Zhiqiang Liang ◽  
Jianjun Tian ◽  
Qifeng Zhang ◽  
Liduo Wang ◽  
...  

2008 ◽  
Vol 8 (5) ◽  
pp. 2377-2384 ◽  
Author(s):  
Chang-Yun Quan ◽  
Hua Wei ◽  
Yun-Xia Sun ◽  
Si-Xue Cheng ◽  
Kun Shen ◽  
...  

A series of biocompatible and stimuli-sensitive poly(N-isopropylacrylamide-co-propyl acrylic acid) (P(NIPAAm-co-PAAc)) nanogels were synthesized by emulsion polymerization. In addition, polyethyleneimine (PEI) was further grafted to modify the PNIPAAm-based nanogels. The P(NIPAAm-co-PAAc)-g-PEI nanogels exhibited good thermosensitivity as well as pH sensitivity. Transmission electron microscopy (TEM) showed that the P(NIPAAm-co-PAAc)-g-PEI and P(NIPAAm-co-PAAc) nanogels displayed well dispersed spherical morphology. The mean sizes of the nanogels measured by dynamic light scattering (DLS) were from 100 nm to 500 nm at different temperatures. The cytotoxicity study indicated P(NIPAAm-co-PAAc) nanogels exhibited a better biocompatibility than both PNIPAAm nanogel and P(NIPAAm-co-PAAc)-g-PEI nanogel although all the three kinds of nanogels did not exhibit apparent cytotoxicity. The drug-loaded nanogels, especially the PEI-grafted nanogels, showed temperature-trigged controlled release behaviors, indicating the potential applications as an intelligent drug delivery system.


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