Department of Optometry & Vision Science, Daegu Catholic University, Gyeongsan, 38430, South Korea.
J Nanosci Nanotechnol. 2020 Nov 1;20(11):6871-6876. doi: 10.1166/jnn.2020.18812.
The optical, physical and polymerization property of hydrogel ophthalmic lenses made by cerium nanoparticles containing 4-chlorostyrene as a base hydrogel material were analyzed. Cerium oxide nanoparticles were used as additive. And HEMA, 4-chlorostyrene and a cross-linker EGDMA were copolymerized in the presence of AIBN as an initiator. Also, the polymerization property such as TGA and absorbance of the prepared lens were measured. Measurement of the polymerization characteristics of the copolymerized material showed that TGA was found that the addition of cerium oxide increased thermal stability. The physical properties of the basic lenses were totally satisfied and breaking strength gradually increased with the addition amount of 4-Chlorostyrene. Cerium nanoparticles are considered to satisfy the basic requirements of hydrogel lenses and UV-blocking amount gradually increased according to the addition ratio of cerium oxide nanoparticles without affecting the basic physical properties. Therefore, these materials can be used effectively as additives for ophthalmic hydrogel lenses.
分析了含 4-氯苯乙烯作为基础水凝胶材料的铈纳米粒子制备的水凝胶眼科镜片的光学、物理和聚合性能。使用氧化铈纳米粒子作为添加剂。并在 AIBN 引发剂存在下，将 HEMA、4-氯苯乙烯和交联剂 EGDMA 共聚。此外，还测量了制备的镜片的 TGA 和吸光度等聚合性能。共聚材料聚合特性的测量表明，发现添加氧化铈会提高热稳定性。基础镜片的物理性能完全满足要求，断裂强度随着 4-氯苯乙烯添加量的增加而逐渐增加。铈纳米粒子被认为满足水凝胶镜片的基本要求，并且随着氧化铈纳米粒子添加比例的增加，UV 阻断量逐渐增加，而基本物理性能不受影响。因此，这些材料可以有效地用作眼科水凝胶镜片的添加剂。
