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Porous Crystalsomes via Emulsion Crystallization and Polymer Phase Separation
Mark C Staub1, Seyong Kim1, Shichen Yu1
1Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States.
ACS Macro Letters
|July 28, 2022
Summary
Researchers created porous crystalsomes, crystalline capsules with pores, by manipulating block copolymers. This innovation addresses limitations of closed crystalsomes for drug delivery applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Crystalsomes are crystalline capsules formed via controlled polymer crystallization, exhibiting useful mechanical and thermal properties.
- Their closed structure limits applications in drug delivery, necessitating modifications for enhanced functionality.
Purpose of the Study:
- To develop porous crystalsomes for improved drug delivery.
- To characterize the formation and properties of these novel porous crystalline capsules.
Main Methods:
- Formation of miniemulsions using two amphiphilic block copolymers (BCPs).
- Exploitation of the competition between BCP crystallization and phase separation at emulsion interfaces.
- Selective removal of one BCP to create porosity in the crystalline shell.
Main Results:
- Successful formation of multiphase crystalsomes through controlled BCP interactions.
- Generation of porous crystalline capsules by removing one BCP component.
- Characterization of the resulting porous structures.
Conclusions:
- Porous crystalsomes can be fabricated by controlling block copolymer self-assembly and phase separation.
- This method offers a pathway to engineer crystalline capsules with tunable porosity for advanced applications.
- The developed porous crystalsomes show potential for drug delivery systems.
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