General Information
    • ISSN: 2010-0221 (Print)
    • Abbreviated Title: Int. J. Chem. Eng. Appl.
    • Frequency: Bimonthly
    • DOI: 10.18178/IJCEA
    • Editor-in-Chief: Prof. Dr. Shen-Ming Chen
    • Executive Editor: Jennifer X. Zeng
    • Abstracting/ Indexing: Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, CABI, Electronic Journals Library, Google Scholar, ProQuest,  Crossref, EBSCO.
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Prof. Dr. Shen-Ming Chen
National Taipei University of Technology, Taiwan

IJCEA 2017 Vol.8(6): 377-380 ISSN: 2010-0221
doi: 10.18178/ijcea.2017.8.6.687

Influence of Shell Number on Loading Capacity of Microcapsules Containing Fragrance

A. K. Aldred, W. Chokbundit, and K. Saengsorn
Abstract—Microcapsules of single-shell melamine–formalde- hyde (MF) and double–shell urea-formaldehyde/melamine –formaldehyde (UF/MF) microcapsules loading with fragrance of varied concentrations were prepared using in situ polymerization. The microcapsules were analyzed using Scanning electron microscope (SEM) and Fourier transform infrared spectrometer (FT–IR). Loading capacity of fragrance in the microcapsules in term of percent weight of fragrance was determined using soxhlet extraction. From SEM images, shapes and sizes of single shell MF microcapsules were different depending on concentrations of fragrance and SDS added in the preparation procedure. FT–IR spectra of double–shell UF/MF microcapsules loaded fragrance presented absorption band of C=O at 1674 cm-1 as found in that of fragrance. Percent weight of fragrance in single–shell UF and double–shell UF/MF microcapsules substantially increased with increased concentration of fragrance. Additionally, loading capacity of fragrance in double–shell UF/MF microcapsules were higher than those in single–shell MF microcapsules at the same concentration of fragrance. This would lead to higher prolongation of fragrance release from double–shell UF/MF microcapsules than single–shell MF microcapsules and fulfill the end use applications.

Index Terms—Fragrance, loading capacity, melamine– formaldehyde, microcapsules, urea–formaldehyde.

A. K. Aldred, W. Chokbundit, and K. Saengsorn are with Maejo University, Faculty of Science, ChiangMai Thailand 50290 (e-mail:,, saengsorn23@hotmail.


Cite: A. K. Aldred, W. Chokbundit, and K. Saengsorn, "Influence of Shell Number on Loading Capacity of Microcapsules Containing Fragrance," International Journal of Chemical Engineering and Applications vol. 8, no. 6, pp. 377-380, 2017.

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