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Flow-Driven Translocation of a Diblock Copolymer through a Nanopore
Mingming Ding1, Qiaoyue Chen2, Xiaozheng Duan1
1State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China.
The Journal of Physical Chemistry. B
|October 1, 2019
Summary
This study reveals how flow rate influences diblock copolymer movement through nanopores. Adjusting flow rates can separate copolymers based on their hydrophobic segment content.
Area of Science:
- Polymer physics
- Nanotechnology
- Computational chemistry
Background:
- Diblock copolymers feature distinct hydrophilic and hydrophobic segments.
- Understanding polymer behavior in confined spaces like nanopores is crucial for nanotechnology.
Purpose of the Study:
- To investigate the flow-driven translocation of diblock copolymers through nanopores.
- To explore how copolymer composition affects translocation dynamics.
Main Methods:
- Utilizing a hybrid simulation approach combining molecular dynamics and lattice Boltzmann methods.
- Simulating the movement of diblock copolymers through a nanoporous structure under flow conditions.
Main Results:
- Observed complex translocation dynamics for diblock copolymers.
- Found that increased hydrophobic segments necessitate higher critical flow rates.
- Demonstrated reduced translocation times with more hydrophobic segments.
Conclusions:
- Flow rate is a key parameter for controlling diblock copolymer translocation.
- Separation of copolymers with varying hydrophobic fractions is achievable by tuning flow rates.
- Provides insights for designing microscale separation devices based on copolymer properties.
