開發預測雙子型界面活性劑之自組裝結構的方法;DEVELOPING THE METHOD OF PREDICTING THE SELF-ASSEMBLES STRUCTURE OF GEMINI SURFACTANTS

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Title:	開發預測雙子型界面活性劑之自組裝結構的方法;DEVELOPING THE METHOD OF PREDICTING THE SELF-ASSEMBLES STRUCTURE OF GEMINI SURFACTANTS
Authors:	余佳穎;Yu, Chia-Ying
Contributors:	化學工程與材料工程學系
Keywords:	自組裝結構;雙子型界面活性劑;由下而上;堆疊參數;自由能;self-assembly structure;gemini surfactant;bottom-up;packing parameter;free energy
Date:	2019-08-22
Issue Date:	2019-09-03 12:35:53 (UTC+8)
Publisher:	國立中央大學
Abstract:	以往人們都是以得到的物質之性質來選擇適合它的用途，然而我們都知道世界上所有物質都是以分子或是原子組裝而成；所以理論上，我們可以調整自組裝結構來設計出我們想要的物理性質的物質，也就是說，以往是使用由上而下的方式，而此篇研究想以由下而上的方式來設計我們想要的物質。為了要用由下而上的方式設計材料，我們必須先找到自組裝行為如何受到物質本身的化學結構、外在環境因素及外力影響，並且了解結構與物理性質間的關聯性。堆疊參數是描述分子結構與自組裝結構的關係，我們能從分子結構計算出某環境下的堆疊參數，且推測自組裝結構，但堆疊參數有些缺點。所以我們利用連續體力學的描述，由自由能的角度解釋自組裝行為。透過此研究，我們得知能從自發曲率及彎曲模數觀察自組裝行為，所以只要知道其參數便能設計我們想要的物質。;Materials are assembled molecule by molecule, theoretically, as long as understanding of their structures, assembly properties of individual molecular, this is likely to use ‘bottom-up’ approach to design the materials which we want by changing their structures. In order to design materials, finding out how self-assembly behavior is affected by the chemical structure of the substance, external environmental factors and external forces, and coming to understand the relationship between them. The relation between molecular structure and self-assembly properties can describe by packing parameter, but it exists some disadvantage, on the contrary, at continuum mechanics, the monolayer formed self-assembly behavior is considered a continuous flexible solid thin film, and it can describe by the elastic energy density. Through our experiment (SAXS and SANS), We think that we could use the spontaneous curvature and bending modulus to check the self-assembly structure, so when we know these parameters, we could develop the structure we wanted.
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] Electronic Thesis & Dissertation

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