Next Article in Journal
Clay Aerogel Supported Palladium Nanoparticles as Catalysts
Previous Article in Journal
Low-Molecular-Weight Gelators as Base Materials for Ointments
Article Menu

Export Article

Open AccessArticle
Gels 2016, 2(2), 14; doi:10.3390/gels2020014

Improved Water Barrier Properties of Calcium Alginate Capsules Modified by Silicone Oil

Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA
*
Author to whom correspondence should be addressed.
Academic Editor: David Díaz Díaz
Received: 1 February 2016 / Revised: 28 March 2016 / Accepted: 1 April 2016 / Published: 7 April 2016
View Full-Text   |   Download PDF [2125 KB, uploaded 7 April 2016]   |  

Abstract

Calcium alginate films generally offer poor diffusion resistance to water. In this study, we present a technique for encapsulating aqueous drops in a modified calcium alginate membrane made from an emulsion of silicone oil and aqueous alginate solution and explore its effect on the loss of water from the capsule cores. The capsule membrane storage modulus increases as the initial concentration of oil in the emulsion is increased. The water barrier properties of the fabricated capsules were determined by observing the mass loss of capsules in a controlled environment. It was found that capsules made with emulsions containing 50 wt% silicone oil were robust while taking at least twice the time to dry completely as compared to capsules made from only an aqueous alginate solution. The size of the oil droplets in the emulsion also has an effect on the water barrier properties of the fabricated capsules. This study demonstrates a facile method of producing aqueous core alginate capsules with a modified membrane that improves the diffusion resistance to water and can have a wide range of applications. View Full-Text
Keywords: calcium alginate; inverse gelation; emulsion; encapsulation; water barrier calcium alginate; inverse gelation; emulsion; encapsulation; water barrier
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Zukas, B.G.; Gupta, N.R. Improved Water Barrier Properties of Calcium Alginate Capsules Modified by Silicone Oil. Gels 2016, 2, 14.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Gels EISSN 2310-2861 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top