# Highly efficient encapsulation of ingredients in poly(methyl methacrylate) capsules using a superoleophobic material

> Title: Highly efficient encapsulation of ingredients in poly(methyl methacrylate) capsules using a superoleophobic material Page Range: p.129-134 Author(s): Takayuki Takei; Kiyotaka Araki; Keita Terazono; Yoshihiro Ozuno; Gen Hayase; Kazuyoshi Kanamori; Kazuki Nakanishi; Masahiro Yoshida Click Here to Download Now! - File size:...

Canonical URL: https://polymerjournals.com/highly-efficient-encapsulation-of-ingredients-in-polymethyl-methacrylate-capsules-using-a-superoleophobic-material/
Published: 2017-02-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: Highly efficient encapsulation of ingredients in poly(methyl methacrylate) capsules using a superoleophobic material**
 ![](http://ppc.jpg)Page Range: p.129-134
 Author(s): Takayuki Takei; Kiyotaka Araki; Keita Terazono; Yoshihiro Ozuno; Gen Hayase; Kazuyoshi Kanamori; Kazuki Nakanishi; Masahiro Yoshida
 ![](http://dload.gif)Click Here to Download Now! - File size: (subscribers only)![](http://pdf.gif)
 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 25
 Issue No: No.2

**Abstract**
 Increasing the efficiency of encapsulation of ingredients into spherical capsules can decrease the manufacturing costs of the capsules. Ingredients can be encapsulated with high efficiency (>99%) into nondegradable hard resin capsules prepared by polymerisation of spherical droplets of trimethylolpropane trimethacrylate (TRIM) monomer placed on a superoleophobic material. Poly(methyl methacrylate) (PMMA) resin is a more versatile capsule material than poly-TRIM resin. In this study, the efficiency of encapsulation in PMMA resin capsules prepared from methyl methacrylate (MMA) monomer was investigated. To reduce the volatility of the MMA monomer, pre-polymerised MMA was used for capsule preparation. Although non-volatile e-tocopherol and doxorubicin could be encapsulated in the capsules with high efficiency by heat polymerisation at 60 deg C for 3 h, the efficiency for volatile tetradecane was much lower (approximately 60%) because it evaporated. Furthermore, even when using pre-polymerised MMA, more than 70% of the prepolymer evaporated during polymerisation. To prevent the evaporation of tetradecane and the prepolymer, ultraviolet photopolymerisation was adopted because it was faster and could be conducted at a lower temperature. The photopolymerisation prevented the evaporation of the prepolymer and increased the efficiency of encapsulation of tetradecane (approximately 90% efficiency). This polymerisation system is effective for encapsulation of ingredients in PMMA capsules with high efficiency. 25 Refs.