| DC 欄位 |
值 |
語言 |
| DC.contributor | 化學工程與材料工程學系 | zh_TW |
| DC.creator | 張峻崴 | zh_TW |
| DC.creator | Jun-Wei Chang | en_US |
| dc.date.accessioned | 2023-6-12T07:39:07Z | |
| dc.date.available | 2023-6-12T07:39:07Z | |
| dc.date.issued | 2023 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=110324030 | |
| dc.contributor.department | 化學工程與材料工程學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 卡拉膠是一種常用於食品水凝膠和藥物載體的線性、帶電多醣類。在區分氫鍵和陽離子橋兩種交聯的機制後，這項研究提出了一種新穎且簡便的方法，可在室溫下輕易地獲得能形成膠囊和自立薄膜的卡拉膠水凝膠。首先，透過氫鍵的作用可以形成弱凝膠，然後通過引入陽離子橋將其轉化為強凝膠。因此，可以將弱凝膠作為可生物降解的3D打印材料，通過將其注入含有特定陽離子的支撐介質中來製造不同的3D結構。當卡拉膠的濃度較低時，凝膠無法形成。但在陽離子橋的作用下，微米級的微凝膠仍然可以自發形成，而透過純氫鍵無法自然形成微凝膠。卡拉膠微凝膠的分散液展現出降伏應力和黏彈特性。經過離心後，增濃後的分散液展現了自我修復能力，其可作為3D列印的支撐介質。 | zh_TW |
| dc.description.abstract | Carrageenan is a linear, charged polysaccharide that is commonly used as food hydrocolloids and drug carriers. After differentiating the gelling mechanisms of hydrogen bond and cation-bridge, this study presents a novel and facile method for obtaining carrageenan hydrogel that can be easily shaped into capsules and free-standing films at room temperature. Initially, a weak gel based solely on hydrogen bonds is developed, which can subsequently be transformed into a strong gel by introducing cation bridges. Therefore, the weak gel can be served as biodegradable 3D printing ink for producing structures by injecting it into a supporting medium containing specific cations. When the carrageenan concentration is low, the bulk gel fails to form. However, the micron-sized microgel can still form spontaneously due to cation-bridges, rather than hydrogen bonds. The dispersion of carrageenan microgels shows both yield stress and viscoelasticity. Upon centrifugation, the concentrated dispersion displays self-healing ability and can serve as a supporting medium for 3D printing. | en_US |
| DC.subject | 卡拉膠 | zh_TW |
| DC.subject | 膠囊 | zh_TW |
| DC.subject | 三維列印油墨 | zh_TW |
| DC.subject | 支撐介質 | zh_TW |
| DC.subject | 微凝膠 | zh_TW |
| DC.subject | 陽離子橋 | zh_TW |
| DC.subject | carrageenan | en_US |
| DC.subject | capsule | en_US |
| DC.subject | 3D printing ink | en_US |
| DC.subject | supporting medium | en_US |
| DC.subject | microgels | en_US |
| DC.subject | cation-bridge | en_US |
| DC.title | 室溫下簡易製備卡拉膠凝膠的三維結構與 自發形成卡拉膠微凝膠 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Facile fabrication of 3D structure of carrageenan gel at room temperature and spontaneous formation of carrageenan microgels | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |