發明
中華民國
100143761
I 462753
雙乳化核殼奈米結構及其製備方法
國立交通大學
2014/12/01
本發明提供一種雙乳化核殼奈米結構及其製備方法。雙乳化核殼奈米結構係由油相殼包覆水相核而成。可藉由使用單一混合攪拌步驟來乳化水溶性高分子之水溶液與疏水性順磁微粒之有機溶液,而可製得雙乳化核殼奈米結構。藉由控制高分子的分子量,便能夠控制載體的大小,從數十奈米至數百奈米均可得到。由於載體具有水相內核及油相殼層,可以簡單的螯合各種藥物於核中或殼內,且由於穩固的殼層,藥物自然漏藥的現象大幅降低。而當施加交流磁場時,氧化鐵受作用發熱,使高分子層結構開始變化解,此時藥物快速釋出;當控制磁場開關交互進行時,可以控制藥物分段釋放。 A double-emulsion core-shell nano structure and preparation methods thereof is provided. The double-emulsion core-shell nano structure is a structure of an oil shell enclosing a water core. The double-emulsion core-shell nano structure can be prepared by simply mixing and stirring to emulsify an aqueous solution of a water soluble polymer and an organic solution of hydrophobic paramagnetic nanoparticles. The nanocarriers possess hydrophilic core and hydrophobic shell, so molecules like drugs can be encapsulated into the core or shell depending on its character. Low release achieved because of the shell is stable. Under the magnetic field, iron oxides generate heat and the polymer structure change, causing the drug molecules diffuse out rapidly. In addition, it can also get step-like release behavior when the remote magnetic field is switched on and off.
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