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Triplet Fusion Upconversion Nanocapsule Synthesis

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Programming pH-responsive release of two payloads from dextran-based nanocapsules.

Kusuma Thongchaivetcharat¹, Ratchapol Jenjob¹, Farzad Seidi¹

¹Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand.

Carbohydrate Polymers

|May 14, 2019

Summary

This summary is machine-generated.

Controlled release of corrosion inhibitors from nanocapsules is pH-dependent. This study explains how nanocapsule swelling, inhibitor solubility, and charge interactions influence release kinetics, preventing premature environmental contamination.

Keywords:

Controlled release Corrosion inhibitor Dextran carbamate Nanocapsules pH-responsive material

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Published on: January 22, 2018

Area of Science:

Materials Science
Chemical Engineering
Nanotechnology

Background:

Controlled release systems are crucial for effective drug delivery and preventing environmental contamination.
Nanocapsules offer a promising platform for encapsulating and delivering active substances like corrosion inhibitors.
Understanding payload release kinetics is essential for optimizing nanocapsule performance.

Purpose of the Study:

To investigate the pH-dependence of corrosion inhibitor release from dextran-based nanocapsules.
To elucidate the mechanisms governing the release kinetics influenced by environmental pH.
To establish a foundation for designing advanced controlled-release nanocarriers.

Main Methods:

Nanocapsules were synthesized via interfacial crosslinking of dextran derivatives in inverse miniemulsion.
Corrosion inhibitor release kinetics were studied across a range of pH values.
Analysis involved evaluating nanocapsule shell swelling, payload solubility, and electrostatic interactions.

Main Results:

Release kinetics of corrosion inhibitors demonstrated a significant dependence on pH.
Nanocapsule shell swelling was observed to be pH-responsive.
Solubility of corrosion inhibitors and electrostatic interactions varied with pH, impacting release rates.

Conclusions:

The pH of the surrounding medium critically controls the release rate of corrosion inhibitors from nanocapsules.
The observed release behavior is governed by a combination of nanocapsule swelling, payload solubility, and electrostatic forces.
These findings are vital for the development of pH-sensitive nanocarriers for targeted delivery and environmental protection.