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Citation: SHAN Xin-Li, WANG Jian-Ping, LIU Yan, ZHANG Xing-Xiang. Fabrication and Characterization of Microencapsulated n-Octadecane with an Acrylic Co-polymeric Shell[J]. Acta Physico-Chimica Sinica, ;2009, 25(12): 2590-2596. doi: 10.3866/PKU.WHXB20091208 shu

Fabrication and Characterization of Microencapsulated n-Octadecane with an Acrylic Co-polymeric Shell

1.
Tianjin Municipal Key Laboratory of Fiber Modification and Functional Fibers, Institute of Functional Fibers, Tianjin Polytechnic University, Tianjin 300160, P. R. China

Received Date: 2 July 2009
Available Online: 23 October 2009

Microcapsules containing n-octadecane were synthesized using a methyl methacrylate/methacrylic acid co-polymeric shell with 1,4-butylene glycol diacrylate (BDDA) as a cross-linking agent. The surface morphologies, thermal physical properties, and thermal stabilities of the microencapsulated n-octadecane(MC18) were investigated by scanning electronic microscopy, differential scanning calorimetry, and thermogravimetric analysis, respectively. Experimental results showed that by increasing the mass ratio of monomer/core or the monomer concentration, the surfaces become more compact and the shell thickness increase. The thermal stability of MC18 can be improved by adding a cross-linking agent and the surface becomes much more compact and smoother by increasing the feed of the cross-linking agent BDDA. The thermal resistance temperature of MC18 improves obviously. As the mass ratio of monomer/core increases, the enthalpy of MC18 decreases and the encapsulation rate is lower.
- Microcapsule,
- Acrylic acid,
- n-Octadecane,
- Thermal stability,
- Cross-linking agent
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