@article{MTMT:3379592, title = {Fully bio-originated latent heat storing calcium alginate microcapsules with high coconut oil loading}, url = {https://m2.mtmt.hu/api/publication/3379592}, author = {Németh, Bence László and Szemesné Németh, Ágnes and Ujhidy, Aurél and Tóth, Judit and Trif, László and Gyenis, János and Feczkó, Tivadar}, doi = {10.1016/j.solener.2018.05.066}, journal-iso = {SOL ENERGY}, journal = {SOLAR ENERGY}, volume = {170}, unique-id = {3379592}, issn = {0038-092X}, year = {2018}, eissn = {1471-1257}, pages = {314-322}, orcid-numbers = {Trif, László/0000-0002-3960-1829; Gyenis, János/0000-0001-5928-0535} } @article{MTMT:2834642, title = {Microencapsulation of n-hexadecane phase change material by ethyl cellulose polymer}, url = {https://m2.mtmt.hu/api/publication/2834642}, author = {Feczkó, Tivadar and Fodorné Kardos, Andrea and Németh, Bence László and Trif, László and Gyenis, János}, doi = {10.1007/s00289-014-1250-y}, journal-iso = {POLYM BULL}, journal = {POLYMER BULLETIN}, volume = {71}, unique-id = {2834642}, issn = {0170-0839}, abstract = {Microencapsulation of phase change materials (PCMs) is an attractive opportunity for broadening their applications. In this respect, a novel encapsulating polymer, ethyl cellulose (EC) was used to entrap n-hexadecane (HD) PCM by an emulsion-solvent evaporation method. Emulsifiers strongly influenced the size and morphology of the forming EC-HD composite microcapsules, and they also had a great impact on their thermal properties. All of the three emulsifiers were suitable to prepare quasi core-shell microparticles, though the high porosity of shells resulted in serious leakage in composites prepared by Tween 80, and permeability of particles manufactured by poly(vinyl alcohol) (PVA), as can be stated from scanning electron microscopy and differential scanning calorimetry analysis. Interfacial tension measurements and spreading coefficient analysis enabled the prediction of preparation conditions for usable core-shell microcapsules. Volume-weighted mean diameters of the microparticles were 319, 92 and 85 mu m formed by Tween 80, PVA and poly(methacrylic acid sodium salt) (PMAA), respectively. A significantly higher HD content and latent heat storage capacity could be achieved using PVA and PMAA than with Tween 80. The thermal cycling test indicated good thermal reliability of microcapsules prepared by PMAA, while the energy-storing capacity of composites prepared by PVA decreased substantially, and a dramatic reduction was found in microparticles using Tween 80.}, keywords = {CELLULOSE; differential scanning calorimetry; microstructure; scanning electron microscopy; microencapsulation; Particle size analysis; STORAGE; Paraffins; surfactant; Emulsification; ethyl cellulose; Ethylcellulose; Polyvinyl alcohols; Heat storage; Latent heat; Microcapsules; Phase change materials; Thermal reversibility; Phase change material; Volume-weighted means; Preparation conditions; Poly (vinyl alcohol) (PVA); Spreading coefficients; Emulsion-solvent evaporation method; Thermal cycling test}, year = {2014}, eissn = {1436-2449}, pages = {3289-3304}, orcid-numbers = {Trif, László/0000-0002-3960-1829; Gyenis, János/0000-0001-5928-0535} } @article{MTMT:2542182, title = {The effect of bioenergy expansion:Food, energy, and environment}, url = {https://m2.mtmt.hu/api/publication/2542182}, author = {Popp, József and Lakner, Zoltán and Rákos, Mónika and Fári, Miklós Gábor}, doi = {10.1016/j.rser.2014.01.056}, journal-iso = {RENEW SUST ENERG REV}, journal = {RENEWABLE & SUSTAINABLE ENERGY REVIEWS}, volume = {32}, unique-id = {2542182}, issn = {1364-0321}, keywords = {Environmental impact; Bioenergy; Energy security}, year = {2014}, eissn = {1879-0690}, pages = {559-578}, orcid-numbers = {Popp, József/0000-0003-0848-4591; Rákos, Mónika/0000-0002-2986-4334} }