The Preparation and Characterization of Chitosan–Gelatin Microcapsules and Microcomposites with Fatty Acids as Thermal Energy Storage Materials

After cellulose, chitosan is the second-most-abundant natural resource and can be used as shell material during microencapsulation. In this study, chitosan–gelatin (CG) microcapsules and microcomposites containing either caprylic or decanoic acid were prepared according to the complex coacervation method and cross-linked by glutaraldehyde. To study the influence of the glutaraldehyde mass ratio upon encapsulation, as well as both the physical and thermal properties of the resulting microcapsules, the properties of microencapsulated phase-change materials (microPCMs) were analyzed by using scanning electron microscopy, differential scanning calorimetry, and Fourier transform infrared spectroscopy. Results show the successful synthesis of microPCMs and melting temperatures of approximately 11.5 and 24.2 °C with latent heat storage capacities of 79 and 73 J g−1 for microPCMs containing caprylic acid and those containing decanoic acid, respectively.

[1]  Jianwen Liu,et al.  Preparation of polysaccharide derivates chitosan-graft-poly(ɛ-caprolactone) amphiphilic copolymer micelles for 5-fluorouracil drug delivery. , 2014, Colloids and surfaces. B, Biointerfaces.

[2]  Guldemet Basal,et al.  Preparation of PCM microcapsules by complex coacervation of silk fibroin and chitosan , 2009 .

[3]  K. Pielichowski,et al.  Phase change materials for thermal energy storage , 2014 .

[4]  M. Hawlader,et al.  Microencapsulated PCM thermal-energy storage system , 2003 .

[5]  Jinjie Liu,et al.  Pickering emulsion: A novel template for microencapsulated phase change materials with polymer–silica hybrid shell , 2014 .

[6]  T. Chandy,et al.  Chitosan--as a biomaterial. , 1990, Biomaterials, artificial cells, and artificial organs.

[7]  C. Remuñán-López,et al.  Effect of formulation and process variables on the formation of chitosan-gelatin coacervates , 1996 .

[8]  E. Onder,et al.  Encapsulation of phase change materials by complex coacervation to improve thermal performances of woven fabrics , 2008 .

[9]  J. Giro-Paloma,et al.  Preparation and exhaustive characterization of paraffin or palmitic acid microcapsules as novel phase change material , 2015 .

[10]  T. Maji,et al.  Preparation of genipin cross-linked chitosan-gelatin microcapsules for encapsulation of Zanthoxylum limonella oil (ZLO) using salting-out method , 2008, Journal of microencapsulation.

[11]  Lin Pan,et al.  Preparation, characterization and thermal properties of micro-encapsulated phase change materials , 2012 .

[12]  E. Yilmaz,et al.  Chitosan: a versatile biomaterial. , 2004, Advances in experimental medicine and biology.

[13]  D. Fernandes,et al.  Thermal energy storage: “How previous findings determine current research priorities” , 2012 .

[14]  A. Aydın.  In situ preparation and characterization of encapsulated high-chain fatty acid ester-based phase change material (PCM) in poly(urethane-urea) by using amino alcohol , 2013 .

[15]  H. Paksoy,et al.  Microencapsulation of a fatty acid with Poly(melamine–urea–formaldehyde) , 2014 .

[16]  Minjie Chen,et al.  Study on the grafting of chitosan-gelatin microcapsules onto cotton fabrics and its antibacterial effect. , 2013, Colloids and surfaces. B, Biointerfaces.

[17]  Zhang Zhibin,et al.  Microencapsulation of butyl stearate as a phase change material by interfacial polycondensation in a polyurea system , 2009 .

[18]  G. Basal,et al.  Properties of n‐eicosane‐loaded silk fibroin‐chitosan microcapsules , 2011 .

[19]  S. M. Sadrameli,et al.  A review of microencapsulation methods of phase change materials (PCMs) as a thermal energy storage (TES) medium , 2014 .

[20]  A. Sharma,et al.  Review on thermal energy storage with phase change materials and applications , 2009 .

[21]  Y. Konuklu.  Microencapsulation of phase change material with poly(ethylacrylate) shell for thermal energy storage , 2014 .

[22]  L. Ventolà,et al.  Phase Change Materials (PCM) microcapsules with different shell compositions: Preparation, characterization and thermal stability , 2010 .

[23]  H. Paksoy,et al.  Microencapsulation of coco fatty acid mixture for thermal energy storage with phase change material , 2006 .

[24]  M. Hawlader,et al.  PREPARATION AND EVALUATION OF A NOVEL SOLAR STORAGE MATERIAL: MICROENCAPSULATED PARAFFIN , 2000 .

[25]  H. Paksoy,et al.  Microencapsulation of caprylic acid with different wall materials as phase change material for thermal energy storage , 2014 .