本文選題：形狀記憶 + 凝膠　； 參考：《中國(guó)科學(xué)技術(shù)大學(xué)》2016年碩士論文

【摘要】：形狀記憶高分子材料能夠在環(huán)境刺激(如溫度、光、電、磁、化學(xué)物質(zhì)、pH等)和應(yīng)力作用下定形為一個(gè)臨時(shí)形狀,當(dāng)再一次受到相同刺激時(shí),材料會(huì)從臨時(shí)形狀回復(fù)到初始形狀。在凝膠中設(shè)計(jì)形狀記憶效應(yīng),能夠同時(shí)結(jié)合凝膠的固體-液體特性,在傳感與運(yùn)動(dòng)器件、生物醫(yī)療、仿生材料、結(jié)構(gòu)發(fā)光、藥物釋放等方面有光明的應(yīng)用前景。在本文中,我們嘗試通過簡(jiǎn)單便捷的方法來制備凝膠,借助紅外譜圖、核磁氫譜、X射線衍射、流變測(cè)試、差示掃描量熱等手段對(duì)凝膠體系進(jìn)行表征和研究,進(jìn)一步在凝膠體系中設(shè)計(jì)形狀記憶效應(yīng)。主要內(nèi)容包括：基于膠束聚合方法的基本原理,直接在水溶液熱引發(fā)聚合丙烯酰胺、陽離子表面活性單體、丙烯酸來制備疏水改性兩性聚電解質(zhì)水凝膠。研究了三氯化鐵溶液和氯化鈉溶液對(duì)體系的影響。以此出發(fā),設(shè)計(jì)出兩種不同的形狀記憶效應(yīng)。進(jìn)一步研究溫度對(duì)體系的影響,發(fā)現(xiàn)可以通過在彈性網(wǎng)絡(luò)中產(chǎn)生塑性變形,從而使體系的形狀記憶效應(yīng)變得與眾不同,針對(duì)這種熱致塑性的潛在機(jī)理進(jìn)行了分析與探討�；诃傊窃谒芤褐械慕Y(jié)構(gòu)-性能關(guān)系,直接在水相中采用一鍋法合成化學(xué)-物理混合交聯(lián)的水凝膠。研究了瓊脂糖含量、Fe(Ⅲ)-檸檬酸溶液對(duì)體系的影響,以及溫度對(duì)體系的影響�；诃傊堑穆菪�-無規(guī)線團(tuán)溫控可逆轉(zhuǎn)變和Fe(Ⅲ)-檸檬酸對(duì)光照的響應(yīng)性,分別設(shè)計(jì)出溫度、光照控制的形狀記憶效應(yīng),針對(duì)潛在的機(jī)理進(jìn)行分析和探討。本方法能夠克服己報(bào)到的熱致形狀記憶凝膠的方法存在的一些問題,同時(shí)也為凝膠中光控形狀記憶的設(shè)計(jì)提供了新思路。
[Abstract]:Shape memory polymer materials can be shaped into a temporary shape under environmental stimuli (such as temperature, light, electricity, magnetism, chemicals, pH, etc.) and stress, when again stimulated by the same stimulus, The material reverts from the temporary shape to the initial shape. The design of shape memory effect in gel can combine the solid-liquid properties of gel at the same time. It has a bright future in sensing and moving devices biomedical biomimetic materials structure luminescence drug release and so on. In this paper, we try to prepare gel by simple and convenient method, and characterize and study the gel system by means of infrared spectroscopy, nuclear magnetic hydrogen spectrum X-ray diffraction, rheological test, differential scanning calorimetry, etc. The shape memory effect was further designed in the gel system. The main contents are as follows: hydrophobic modified amphoteric polyelectrolyte hydrogels are prepared by direct thermal initiation of acrylamide, cationic surfactant and acrylic acid in aqueous solution based on the basic principle of micellar polymerization. The effects of ferric chloride solution and sodium chloride solution on the system were studied. Based on this, two different shape memory effects are designed. The influence of temperature on the system is further studied. It is found that the shape memory effect of the system can be distinguished by forming plastic deformation in the elastic network. The potential mechanism of the thermoplastic effect is analyzed and discussed. Based on the structure-performance relationship of agarose in aqueous solution, the chemical-physical crosslinked hydrogels were synthesized by one-pot method in water phase directly. The effect of agarose content of Fe (鈪，

本文編號(hào)：2044969