Storage Moduli and Porosity of Soft PDMS PolyMIPEs Can Be Controlled Independently Using Thiol–Ene Click Chemistry
Storage Moduli and Porosity of Soft PDMS PolyMIPEs Can Be Controlled Independently Using Thiol–Ene Click Chemistry
复制标题
使用硫醇-烯点击化学可以独立控制软 PDMS PolyMIPE 的储能模量和孔隙率
DOI：
10.1021/acs.macromol.0c00217
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发表时间：
2020
期刊：
影响因子：
5.5
通讯作者：
Ayres, Neil
中科院分区：
文献类型：
--
作者：
McKenzie, Tucker J.;Heaton, Paul S.;Rishi, Kabir;Kumar, Raj;Brunet, Thomas;Beaucage, Gregory;Mondain-Monval, Olivier;Ayres, Neil
多孔弹性体聚合物由于其独特的特性，如生物相容性、透气性、热稳定性、疏水性和介电性，已被用于广泛的应用。聚（二甲基硅氧烷）（PDMS），一种市售弹性体，也显示出具有特定的声学特性。然而，由于缺乏对用于制备交联PDMS弹性体的化学的控制，材料性质受到限制。本文采用大分子硫醇-烯反应合成了储能剪切模量（G′）可调的PDMS基聚合介质内相乳液（polyMIPE）。通过改变硫醇与烯官能化的PDMS的化学计量比来实现从1038至10330 kPa的储能剪切模量值，而polyMIPE的孔隙率由乳液制剂中使用的水相的体积来控制。使用声学表征记录了通过多孔材料的非常低的声速（1040 m/s）。因此，这项工作提供了一个例子的合成软polyMIPE与可能的应用作为声学材料。
Porous elastomeric polymers have been used in a wide range of applications because of their unique characteristics such as biocompatibility, gas permeability, thermal stability, and hydrophobic and dielectric properties. Poly(dimethyl siloxane) (PDMS), a commercially available elastomer, has also been shown to exhibit specific acoustic properties. However, the material properties were limited because of a lack of control over the chemistry used to prepare the cross-linked PDMS elastomer. Here, the synthesis of PDMS-based polymerized medium internal-phase emulsions (polyMIPEs) with tunable storage shear moduli (G′) has been performed using macromolecular thiol–ene reactions. Storage shear modulus values from ∼38 to ∼330 kPa were achieved by changing the stoichiometric ratio of the thiol-to-ene-functionalized PDMS, whereas the porosity of the polyMIPEs was controlled by the volume of the aqueous phase used in the emulsion formulation. Very low sound velocities (∼40 m/s) through the porous materials were recorded using acoustic characterization. Therefore, this work provides an example of the synthesis of soft polyMIPEs with possible applications as acoustic materials.
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影响因子：
6.2
作者：
Eissa, Ahmed M.;Barros, Flavio S. V.;Cameron, Neil R.
通讯作者：
Cameron, Neil R.
硅氧烷弹性体泡沫
影响因子：
19
作者：
A. Martina;J. Hilborn;J. Kiefer;J. Hedrick;S. Srinivasan;R. D. Miller
通讯作者：
R. D. Miller
影响因子：
6.1
作者：
Ilavsky, Jan;Zhang, Fan;Allen, Andrew J.
通讯作者：
Allen, Andrew J.
影响因子：
14
作者：
Whitely M;Cereceres S;Dhavalikar P;Salhadar K;Wilems T;Smith B;Mikos A;Cosgriff-Hernandez E
通讯作者：
Cosgriff-Hernandez E
基于固定在二氧化硅上的聚（二甲基硅氧烷）的高效液相色谱固定相。
DOI：
10.1016/j.chroma.2005.03.110
发表时间：
2005
期刊：
Journal of chromatography. A
影响因子：
--
作者：
Edivan Tonhi;K. Collins;C. Collins
通讯作者：
C. Collins