The Effect of Co-Monomer Content on the Swelling/Shrinking and Mechanical Behaviour of Individually Adsorbed PNIPAM Microgel Particles
The Effect of Co-Monomer Content on the Swelling/Shrinking and Mechanical Behaviour of Individually Adsorbed PNIPAM Microgel Particles
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DOI：
10.3390/polym3041575
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发表时间：
2011-12-01
期刊：
影响因子：
5
通讯作者：
von Klitzing, Regine
中科院分区：
文献类型：
--
作者：
Burmistrova, Anna;Richter, Marcel;von Klitzing, Regine
研究了微凝胶颗粒在体和表面的膨胀/溶胀行为，并将其与力学性能相关联。我们重点研究了两种粒子：纯PNIPAM和PNIPAM-co- aac粒子。结果表明，PNIPAM-co-AAc颗粒在表面吸附后，两步体积相变消失，只有一步体积相变。随着共单体含量的增加，转变温度明显升高。讨论了吸附微凝胶颗粒的杨氏模量与温度和共单体含量的关系。通过DLS和SFM进行调查。
The swelling/deswelling behaviour of microgel particles in the bulk and at the surface was studied and correlated to their mechanical properties. We focused on two kinds of particles: pure PNIPAM and PNIPAM-co-AAc particles. It was shown that the two step volume phase transition found for PNIPAM-co-AAc particles in the bulk disappears after the adsorption at the surface and only a one step transition was identified. The transition temperature increased strongly with increasing the co-monomer content. The dependence of the Young's modulus of the adsorbed microgel particles on the temperature and the co-monomer content was discussed. The investigations were performed via DLS and SFM.