期刊
POLYMERS
卷 13, 期 16, 页码 -出版社
MDPI
DOI: 10.3390/polym13162605
关键词
polystyrene microspheres; polyethylene glycol; composite hydrogel; structure; property
资金
- Project of Equipment Pre-research Field Fund [61409220304]
- National Natural Science Foundation of China [51879021]
Introducing polystyrene microspheres into hydrogels can significantly improve the compressive strength and swelling degree, while gradually reducing the surface energy of the hydrogels.
To improve the mechanical strength and practicability of hydrogels, polystyrene microspheres with core-shell structure were prepared by the soap-free emulsion polymerization, polyethylene glycol hydrogels with polystyrene microspheres by the in-situ polymerization. The structure, morphology, roughness, swelling property, surface energy, and mechanical properties of the microspheres and hydrogels were investigated by Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, confocal laser microscopy, swelling test, contact angle measurement, and compression test. The results showed that they have certain swelling capacity and excellent mechanical properties, and can change from hydrophobic to hydrophilic surface. The reason is that the hydrophilic chain segment can migrate, enrich, and form a hydration layer on the surface after soaking for a certain time. Introducing proper content of polystyrene microspheres into the hydrogel, the compressive strength and swelling degree improved obviously. Increasing the content of polystyrene microspheres, the surface energy of the hydrogels decreased gradually.
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