坦尼酸对纤维素纳米晶体胆固醇结构的调节
Hui Jie1, Kai Feng1, Mengfan Lu1
1Department of Chemistry, Renmin University of China, Beijing 100872, China.
Langmuir : the ACS journal of surfaces and colloids
|June 26, 2024
概括
将酸 (TA) 添加到纤维素纳米晶 (CNC) 悬浮液中,可显著降低粘度. 这一发现对于优化CNC用于光学应用,通过印刷和线等过程至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 类风病学 类风病学 类风病学
背景情况:
- 纤维素纳米晶体 (CNCs) 形成有光学应用潜力的奇拉性阴性液晶相.
- 通过剪切 (例如,,打印) 处理CNC需要了解它们的相位行为.
- 对于先进制造来说,研究用于控制CNC质的添加剂是必不可少的.
研究的目的:
- 为了研究酸 (TA) 对CNC悬浮液的质性和胆固醇相结构的影响.
- 了解TA和CNC之间的相互作用及其对液晶相态行为的影响.
- 探索TA作为一种潜在的添加剂,以提高基于CNC的材料的可加工性.
主要方法:
- 制备不同度的CNC/TA混合悬浮剂.
- 风湿学测量 (平稳状态剪切曲线) 来评估粘度和流动行为.
- 同步射线小角度X射线散射 (SAXS) 和极化光学显微镜用于表征相位结构和微观结构.
主要成果:
- 坦尼酸 (TA) 通过结合在CNC表面上吸附.
- 添加TA可显著降低系统粘度 (高达2重%TA) 在广泛的CNC度范围内 (高达15重%).
- 胆固醇相位参数 (体积分数,音调,棒间距) 在很大程度上不受TA添加的影响.
结论:
- 酸有效地修改了CNC液晶相的质特性,主要是通过降低粘度.
- 观察到的流动性变化归因于较小的胆固醇域数量的增加和TA的界面修饰.
- TA是一种有前途的添加剂,可以提高光学设备制造CNC的可加工性.
更多相关视频
11:32Highly Stable, Functional Hairy Nanoparticles and Biopolymers from Wood Fibers: Towards Sustainable Nanotechnology
Published on: July 20, 2016
12.0K
07:25Green and Low-cost Production of Thermally Stable and Carboxylated Cellulose Nanocrystals and Nanofibrils Using Highly Recyclable Dicarboxylic Acids
Published on: January 9, 2017
11.9K
相关概念视频
01:15Cellulose and Pectic Polysaccharides
3.5K
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
As a cell matures, its cell wall specializes according to its type. For example, the...
3.5K
01:02Role of Microtubules in Cell Wall Deposition
2.4K
Microtubules are small hollow tubes in eukaryotic cells. The cell wall microtubules are polymerized dimers of two globular proteins, α-tubulin and β-tubulin, two globular proteins. With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton. They help the cell resist compression and provide a track along which vesicles move through the cell or pull replicated chromosomes to opposite ends of a dividing cell. Microtubules go through quick cycles of...
2.4K