Single microgel degradation governed by heterogeneous nanostructures
Yuichiro Nishizawa1, Hiroki Yokoi1, Takayuki Uchihashi2,3
1Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan.
Soft Matter
|June 1, 2023
Summary
The degradation of single colloidal particles, like microgels, depends on their internal nanostructure. Understanding this mechanism is key for designing drug-delivery systems and micro (nano)plastics.
Area of Science:
- Colloidal science
- Materials science
- Environmental science
Background:
- The degradation mechanism of single colloidal particles is not fully understood.
- Colloidal particle degradation is significant in biological and environmental contexts.
Purpose of the Study:
- To investigate the impact of single particle structure on oxidative degradation.
- To model and observe the degradation of thermoresponsive colloidal particles.
Main Methods:
- Synthesis of thermoresponsive colloidal particles with chemical cleavage points.
- Evaluation using high-speed atomic force microscopy (HS-AFM) and scattering techniques.
- Real-time observation of single-particle degradation.
Main Results:
- Single-particle degradation is governed by inhomogeneous nanostructure.
- Nanostructure is influenced by polymerization methods and hydrophilicity.
- HS-AFM provided real-time insights into degradation dynamics.
Conclusions:
- The findings advance the design of drug-delivery carriers.
- Improved understanding of micro (nano)plastic formation processes.
- Highlights the importance of nanostructure in colloidal particle behavior.
