Synthesis of surface-functionalized polymer particles prepared by amphiphilic macromonomers with hydrophobic end groups

Synthesis of surface-functionalized polymer particles prepared by amphiphilic macromonomers with hydrophobic end groups
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具有疏水端基的两亲性大分子单体制备表面功能化聚合物颗粒的合成

DOI:
10.1007/s00289-019-03044-y
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发表时间:
2019
期刊:
影响因子:
3.2
通讯作者:
Minoda Masahiko
Minoda Masahiko
中科院分区:
化学3区
文献类型:
--
作者:
Motoyanagi Jin;Che Harun Noor Faizah;Minoda Masahiko

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采用活性阳离子聚合和还原胺化法合成了一系列ω-端含苯环、萘基和蒽基的两亲性聚乙烯基醚大分子单体(MA-PMEEVE-Ph、MA-PMEEVE-Nap和MA-PMEEVE-Ant)。所得两亲性大分子单体具有窄的分子量分布(Mw/Mn= 1.14-1.41)和良好的聚合度控制(DPn ≤ 40)。此外,对于所有大分子单体来说,ω-末端的官能度等于1。然后,在极性溶剂中进行所得大分子单体与苯乙烯的共聚,形成几乎单分散的聚合物颗粒。为了阐明末端疏水基团对粒子形成行为的影响,我们研究了大分子单体与苯乙烯的进料比与粒子直径(Dn)和粒子直径分布之间的关系。结果,MA-PMEEVE-Ant提供了最小的聚合物颗粒,Dn = 70 nm。还发现可以通过调节ω-末端基团的疏水性来控制粒径。
A series of amphiphilic poly(vinyl ether)-based macromonomers having an aromatic ring, such as phenyl, naphthyl, and anthryl group, atω-terminus (MA-PMEEVE-Ph, MA-PMEEVE-Nap, and MA-PMEEVE-Ant) were synthesized by living cationic polymerization and reductive amination. The obtained amphiphilic macromonomers possess narrow molecular distributions (Mw/Mn= 1.14–1.41) and well-controlled degree of polymerization (DPn≈ 40). In addition, the functionality of theω-terminus is equal to unity for all the macromonomers. Then, copolymerizations of the obtained macromonomers with styrene in polar solvents were performed to form nearly monodisperse polymer particles. In order to clarify the effect of the terminal hydrophobic group on particle formation behavior, we have investigated the relationships between the feed ratio of the macromonomers to styrene and particle diameter (Dn) and distribution of the particle diameter. As a result, MA-PMEEVE-Ant afforded the smallest polymer particle ofDn= 70 nm. It was also found that the particle diameter can be controlled by tuning the hydrophobicity of theω-terminus group.
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