多电解质微囊的缓冲容量取决于模板的类型
Alexey V Dubrovskii1, Aleksandr L Kim1, Sergey A Tikhonenko1
1Institute of Theoretical and Experimental Biophysics Russian Academy of Science, 3, Institutskaya Str., 142290 Puschino, Moscow Region, Russia.
Polymers
|August 29, 2024
概括
在聚钢芯上形成的多电解质微囊 (PMC) 具有独特的缓冲容量. 它们的行为受离子强度和温度的影响,不同于用其他核心材料制成的囊.
科学领域:
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
- 体科学 体科学 体科学
背景情况:
- 缓冲容量 (BC) 是聚电解质微囊 (PMC) 的一个关键的物理化学参数.
- PMC BC 影响它们的缓冲屏障,外稳定性和物理特性.
- PMC BC可以根据其形成所使用的核心材料而有所不同.
研究的目的:
- 为了确定聚乙烯芯 (PMCPs) 上形成的聚乙烯微囊的缓冲容量 (BC).
- 研究离子强度和温度对PMCPs的BC的影响.
主要方法:
- 使用聚钢芯制造聚电解质微囊.
- 测量不同pH值的缓冲容量.
- 评价离子强度 (添加化) 和温度对BC的影响.
主要成果:
- 与pH>8的水相比,PMCPs具有明显的缓冲容量.
- 增加的离子强度 (NaCl) 在性条件下增强了BC.
- 升高的温度在pH9时降低BC.
- 观察到的特性不同于CaCO3核心上形成的PMC.
结论:
- 聚电解质微囊的缓冲容量取决于模板核心材料.
- 聚乙烯核心的PMC表现出对环境变化的独特反应.
- 这些发现强调了核心选择在定制PMC物理化学性质方面的重要性.
相关概念视频
Buffer Effectiveness
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The buffer capacity is the amount of acid or base that can be added to a given volume...
The buffer capacity is the amount of acid or base that can be added to a given volume...
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Buffer capacity is the quantitative measure of a buffer to resist the change in pH. As shown in the following equation, the buffer capacity, denoted by 'beta', is expressed as the number of moles of acid or base needed to change the pH of a one-liter buffer solution by 1 unit. Here, Ca and Cb indicate the number of moles of acid and base, respectively. Note that dpH represents the change in pH.
In the graph, pH is plotted as a function of the number of moles of base (Cb) added to a weak acid...
In the graph, pH is plotted as a function of the number of moles of base (Cb) added to a weak acid...
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