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Journal of Materials Science

, Volume 54, Issue 9, pp 7383–7396 | Cite as

Fabrication of melamine–urea–formaldehyde/paraffin microcapsules modified with cellulose nanocrystals via in situ polymerization

  • Shenjie Han
  • Shaoyi Lyu
  • Zhilin Chen
  • Siqun WangEmail author
  • Feng FuEmail author
Polymers
  • 228 Downloads

Abstract

The study aims to obtain leakage-free, thermally stable melamine–urea–formaldehyde (MUF)/paraffin microcapsules modified with cellulose nanocrystals (CNCs) by in situ polymerization technique. The morphological features and physicochemical characteristics of CNCs were investigated by transmission electron microscopy, zeta potential measurement, X-ray diffraction, and Fourier transform infrared spectroscopy. Optical microscope measurement, field emission scanning electron microscopy, thermogravimetric analyzer, and differential scanning calorimetry were employed to characterize the morphology, size distribution, and phase change properties of MUF/paraffin microcapsules. The characterization results showed that MUF/paraffin microcapsules were successfully fabricated and modified with CNCs. The CNCs had no impact on the chemical structure or crystal type of MUF/paraffin microcapsules. When the CNC addition was 0.2 wt%, the phase change latent heat values of melting and crystallization of MUF/paraffin microcapsules were, respectively, about 104.5 J/g and 102.8 J/g and the encapsulation efficiency was about 59.8%.

Notes

Acknowledgements

This work was supported by the Fundamental Research Funds of CAF (No. CAFYBB2017ZX003), the financial support from the National High-Tech R&D Program (863 Program) (Grant No. 2010AA101704), the USDA National Institute of Food and Agriculture, Hatch Project 1012359, and the Special Fund for Forest Scientific Research in the Public Welfare (No. 201504603).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Research Institute of Wood IndustryChinese Academy of ForestryBeijingChina
  2. 2.Center for Renewable CarbonUniversity of TennesseeKnoxvilleUSA
  3. 3.Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing Forestry UniversityNanjingChina

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