Controlling the shell structure of hard core/hydrogel shell microspheres
Controlling the shell structure of hard core/hydrogel shell microspheres
复制标题
控制硬核/水凝胶壳微球的壳结构
DOI：
10.1007/s00396-021-04934-2
复制
发表时间：
2022
影响因子：
2.4
通讯作者：
Suzuki Daisuke
中科院分区：
文献类型：
--
作者：
Nishizawa Yuichiro;Honda Kenshiro;Karg Matthias;Suzuki Daisuke
种子沉淀聚合是合成固体核-水凝胶壳层粒子最常用的方法之一，它要求控制壳层结构，而壳层结构在功能化过程中起着重要的作用。本文系统地研究了单体浓度、交联剂浓度等聚合条件对壳层结构的影响。一系列实验表明，在低单体浓度下缺乏交联点，而在高单体浓度下形成二次粒子阻碍了壳层在核心粒子上的引入。单体浓度与壳层厚度的关系可用单指数方程很好地描述，从而可以预测制备目标厚度/交联剂密度所需的单体和交联剂浓度。此外，种子沉淀聚合和单体加料方法的结合使壳层厚度得到进一步控制。
Seeded precipitation polymerization is one of the most versatile techniques for the synthesis of solid core–hydrogel shell particles, and it is required to control the shell structure, which plays an important role in functionalization. In this study, the effect of the polymerization conditions, such as the monomer and cross-linker concentrations, on the structure of the shell layer was systematically investigated. A series of experiments revealed that the lack of cross-linking points at low monomer concentrations and the formation of secondary particles at high monomer concentrations hindered the introduction of shells onto the core particles. The dependence of the monomer concentration on the shell thickness was well described by a single-exponential equation, and thus, the required concentrations of monomer and cross-linker to prepare a target thickness/cross-linking density can be predicted. Moreover, the combination of seeded precipitation polymerization and the monomer feeding method allowed further control of the shell thickness.
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DOI：
10.1021/acs.langmuir.0c02654.s005
发表时间：
2020-12
期刊：
Langmuir : the ACS journal of surfaces and colloids
影响因子：
--
作者：
Yuichiro Nishizawa;Haruka Minato;Takumi Inui;T. Uchihashi;D. Suzuki
通讯作者：
Yuichiro Nishizawa;Haruka Minato;Takumi Inui;T. Uchihashi;D. Suzuki
通过高速原子力显微镜观察蛋白质对单个水凝胶微球的吸收。
影响因子：
4.9
作者：
Shusuke Matsui;Kensuke Hosho;Haruka Minato;T. Uchihashi;D. Suzuki
通讯作者：
D. Suzuki
软微水凝胶颗粒高密度悬浮液屈服行为的简单特征。
影响因子：
3.4
作者：
K. Urayama;Taku Saeki;Shengquan Cong;Shota Uratani;T. Takigawa;Masaki Murai;D. Suzuki
通讯作者：
D. Suzuki
影响因子：
9.9
作者：
MAKINO, K;YAMAMOTO, S;OHSHIMA, H
通讯作者：
OHSHIMA, H
影响因子：
2.4
作者：
D. Suzuki;H. Kawaguchi
通讯作者：
D. Suzuki;H. Kawaguchi