ArticleLangmuir : the ACS journal of surfaces and colloids2021
Temperature-Dependent Nanomechanical Properties of Adsorbed Poly-NIPAm Microgel Particles Immersed in Water.
Article in Langmuir : the ACS journal of surfaces and colloids, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Composite Nanoarchitectonics of Photoactivated Titania-Based Materials with Anticancer Properties.Pharmaceutics · 2022Article
- In situ imaging of the three-dimensional shape of soft responsive particles at fluid interfaces by atomic force microscopy.Science advances · 2022Article
- On the Determination of Mechanical Properties of Aqueous Microgels-Towards High-Throughput Characterization.Gels (Basel, Switzerland) · 2021Article
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5 authors.
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Abstract
The temperature dependence of nanomechanical properties of adsorbed poly-NIPAm microgel particles prepared by a semibatch polymerization process was investigated in an aqueous environment via indentation-based atomic force microscopy (AFM) methods. Poly-NIPAm microgel particles prepared by the classical batch process were also characterized for comparison. The local mechanical properties were measured between 26 and 35 °C, i.e., in the temperature range of the volume transition. Two different AFM tips with different shapes and end radii were utilized. The nanomechanical properties measured by the two kinds of tips showed a similar temperature dependence of the nanomechanical properties, but the actual values were found to depend on the size of the tip. The results suggest that the semibatch synthesis process results in the formation of more homogeneous microgel particles than the classical batch method. The methodological approach reported in this work is generally applicable to soft surface characterization in situ.
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