以烯胺为基础的水凝的结构性,保持水分和吸附性质的比较,通过物理和化学方法进行交联
Olena Siryk1,2, Olena Goncharuk1,2, Yurii Samchenko2
1Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290, Lublin, Poland.
概括
使用化学或物理交叉连接合成的新型水凝显示可调节的膨胀和吸附特性. 烯胺-烯酸共聚物表现出pH敏感的胀和高离子吸附能力.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
背景情况:
- 水凝是多功能聚合物网络,在各种领域都有应用.
- 开发具有受控膨胀和选择性离子吸附的水凝对于环境修复和药物输送至关重要.
研究的目的:
- 通过化学和物理交叉连接方法合成和表征烯胺基水凝.
- 调查单体组成和交联策略对水凝性质的影响.
- 评估合成水凝的膨胀行为和吸收能力,特别是(II) 离子.
主要方法:
- 通过化学交叉连接 (N,N'-甲二烯胺) 和物理交叉连接 (蒙莫里隆石 - MMT) 合成水凝.
- 使用富里埃变换红外光谱 (FTIR) 和扫描电子显微镜 (SEM) 进行结构性表征.
- 分析胀和吸附特性作为单体组成和交叉连接方法的函数.
主要成果:
- 通过FTIR分析Si-O频段转移证实了MMT交叉链接,表明了间隙结构.
- 物理交叉链接的凝对MMT度显示出非单调的胀反应.
- 烯胺-烯酸共聚物MMT-交联水凝表现出pH敏感度和最大胀度为150g/g.
- 烯胺-烯酸共聚合物水凝显示了对 (II) 离子 (30 mg/g共价,8.9 mg/gMMT交联) 的最高吸附能力.
结论:
- 化学和物理交叉连接方法都产生具有独特结构和功能性质的水凝.
- 与MMT交联的水凝提供可调节的胀和pH响应的行为.
- 烯胺-烯酸共聚合物是消除重金属离子,特别是的有希望的材料.
相关概念视频
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01:15Hydrolysis
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Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
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Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...
Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
Hydrolysis Reverses Dehydration Synthesis
Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...
02:34Polymers
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02:43Peptide Bonds
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01:00Characteristics and Nomenclature of Homopolymers
Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
01:21Polymer Classification: Crystallinity
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Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...