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Influence of Surface Treatment of SiO$_2$ and Stirring Rate on Fragrant Oil Release Behavior of Poly($\varepsilon$-caprolactone) Microcapsules  

박수진 (한국화학연구원 화학소재연구부)
양영준 (한국화학연구원 화학소재연구부)
이재락 (한국화학연구원 화학소재연구부)
서동학 (한양대학교 화학공학과)
Publication Information
Polymer(Korea) / v.27, no.5, 2003 , pp. 464-469 More about this Journal
Abstract
In this work, the fragrant oil release behavior of poly($\varepsilon$-caprolactone) (PCL) microcapsules containing SiO$_2$ was investigated. The SiO$_2$ was chemically treated in 10, 20, and 30 wt% hydrochloric acid and sodium hydroxide. The acid and base values were determined by Boehm's titration technique and $N_2$/77 K adsorption isotherm characteristics, the specific surface area and total pore volume were studied by BET. The PCL microcapsules containing SiO$_2$ and fragrant oil were prepared by oil-in-water (o/w) emulsion solvent evaporation method. The shape and surface of PCL microcapsules were observed using image analyzer and scanning electron microscope (SEM). The fragrant oil release behavior of PCL microcapsules was characterized using UV/vis. spectra. The average diameters of PCL microcapsules were decreased from 35 to 21 $\mu$m with increasing stirring rate. It was found that in the case of acidic treatment the fragrant oil adsorption capacity and release rate were increased due to the increase of specific surface area and acid value. In the case of basic treatment, the fragrant oil adsorption capacity and release rate were decreased due to the decrease of sp ecific surface area and the increase of acid-base interactions between SiO$_2$-NaOH and fragrant oil with increasing base value of SiO$_2$.
Keywords
microcapsule; fragrant oil; poly($\varepsilon$-caprolactone); surface treatment; release behavior;
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  • Reference
1 /
[ B.Wichert;P.Rohdewald ] / J. Microencapsul.   DOI   ScienceOn
2 /
[ S.J.Park;B.J.Park;S.K.Ryu ] / Carbon   DOI   ScienceOn
3 /
[ L.Bokobza;L.Ladouce;Y.Bomal;B.Amram ] / J. Appl. Polym. Sci.   DOI   ScienceOn
4 /
[ L.M.Loewenstein;F.Charpin;P.W.Mertens ] / J. Electrochem. Soc.   DOI   ScienceOn
5 /
[ H.Ichikawa;Y.Fukumori ] / J. Control. Release   DOI
6 /
[ C.Wu;T.F.Jim;Z.Gan;Y.Zhao;S.Wang ] / Polymer   DOI   ScienceOn
7 /
[ M.J.K.Chee;J.Ismail;C.Kummerlowe;H.W.Kammer ] / Polymer   DOI   ScienceOn
8 /
[ Q.Guo;G.Groeninckx ] / Polymer   DOI   ScienceOn
9 /
[ S.J.Park;Y.S.Shin;J.R.Lee ] / J. Colloid Interf. Sci.   DOI   ScienceOn
10 /
[ S.Y.Jeong;J.H.Choi;Y.D.Ma ] / Polymer(Korea)
11 /
[ H.P.Boehm ] / Carbon   DOI   ScienceOn
12 /
[ S.J.Park;J.P.Hus(Ed.) ] / Interfacial Forces and Fields: Theory and Applications
13 /
[ K.P.Park;Y.C.Nho ] / Polymer(Korea)
14 /
[ L.Y.Chu;S.H.Park;T.Yamaguchi;S.Nakao ] / J. Membr. Sci.   DOI
15 /
[ C.V.Benedict;W.J.Cook;P.Jarrett;J.A.Cameron;S.J.Huang;J.P.Bell ] / J. Appl. Polym. Sci.   DOI   ScienceOn
16 /
[ M.Iwata;J.W.McGinity ] / J. Microencapsul.   DOI
17 /
[ R.C.Bansal;J.B.Doneet;F.Stoeckli ] / Active Carbon
18 /
[ H.Zimmermann;M.Hillgartner;B.Manz;P.Feilen;F.Brunnenmeier;U.Leinfelder;M.Webber;H.Cramer;S.Schneider;C.Hendrich;F.Volke;U.Zimmermann ] / Biomaterials   DOI   ScienceOn
19 /
[ K.Hong;S.Park ] / Mater. Chem. Phys.   DOI   ScienceOn
20 /
[ H.Ismail;U.S.Ishiaku;Z.A.M.Ishak;P.K.Freakley ] / Eur. Polym. J.   DOI   ScienceOn
21 /
[ S.Brunauer;P.H.Emmett;E.Teller ] / J. Am. Chem. Soc.   DOI
22 /
[ P.Dubois;M.Krishnan;R.Narayan ] / Polymer   DOI   ScienceOn
23 /
[ Y.Onganer;C.Temur ] / J. Colloid Interf. Sci.   DOI   ScienceOn
24 /
[ M.L.Huguet;A.Groboillot;R.J.Neufeld;D.Poncelet;E.Dellacherie ] / J. Appl. Polym. Sci.   DOI   ScienceOn
25 /
[ S.J.Park;J.B.Donnet ] / J. Colloid Interf. Sci.   DOI   ScienceOn
26 /
[ R.Bustos;L.Romo;K.Yanez;G.Diaz;C.Romo ] / J. Food Eng.   DOI
27 /
[ D.A.Collins;D.A.Cook ] / Crop Prot.   DOI   ScienceOn