三嵌段糖基聚合物对纳米TiO2的分散性能研究
Triblock Glycosyl Polymer for the Dis-person Properties of Nano-TiO2
DOI: 10.12677/NAT.2021.113024, PDF,    科研立项经费支持
作者: 陈正奕：南通大学化学化工学院，江苏 南通；孙同明*：南通大学化学化工学院，江苏 南通；南通智能与新能源材料重点实验室，江苏 南通
关键词: 三嵌段糖基聚合物；聚合物分散剂；纳米TiO2；分散； Triblock Glucosyl Polymer； Polymeric Dispersant； Nano-TiO2； Dispersion
摘要: 以双丙酮葡萄糖(DAG)、丙烯酸叔丁酯(tBA)和N-异丙基丙烯酰胺(NIPAM)为单体，通过可逆加成–断裂链转移自由基聚合(RAFT)制备了三嵌段聚合物(PGNA)。将其作为分散剂应用于纳米TiO2的分散研究，结果表明PGNA在纳米TiO2颗粒表面的吸附为单分子层吸附，符合Langmuir吸附等温式；分子量为14346的PGNA对纳米TiO2的分散性能最好，其在纳米TiO2颗粒上的平衡吸附量为5.35 mg/g，颗粒的平均粒径约为120 nm；FT-IR证明了PGNA存在于纳米TiO2颗粒表面，SEM照片直观表明了纳米TiO2在PGNA作用下的良好分散性能。
Abstract: In this paper, a triblock glucosyl polymer (PGNA) was polymerized from diacetone D-glucose (DAG), tert-butyl acrylate (tBA) and N-isopropyl acrylamide (NIPAM), via reversible addition fragmentation chain transfer polymerization (RAFT). PGNA was used as a dispersant for the dispersion of nano-TiO2. The results showed that the absorption type of PGNA onto nano-TiO2 was monolayer absorption. The absorption data obeyed the Langmuir isotherm equation. Among the six PGNAs, PGNA3 with a molecular weight of 14360 was of highest performance with an equilibrium absorption amount of 5.35 mg/g and a particle size about 120 nm. FT-IR spectra revealed that PGNA was absorbed onto nano-TiO2. SEM image directly showed the good dispersing ability of PGNA.
文章引用：陈正奕, 孙同明. 三嵌段糖基聚合物对纳米TiO2的分散性能研究[J]. 纳米技术, 2021, 11(3): 208-217. https://doi.org/10.12677/NAT.2021.113024

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