Irradiation of PMMA intraocular lenses by a 365 nm UV lamp

IF 1.1 4区工程技术 Q4 ENGINEERING, CHEMICAL

International Polymer Processing Pub Date : 2024-07-03 DOI:10.1515/ipp-2024-0029

Alfio Torrisi, A.M. Roszkowska, M. Cutroneo, L. Silipigni, L. Torrisi

引用次数: 0

Abstract

Abstract Intraocular lens (IOL) made on Polymethylmethacrylate (PMMA) has been irradiated by a UV lamp at different exposure times, in air and at room temperature. The macromolecular modifications induced in the lens have been investigated using attenuated total reflectance (ATR) coupled to Fourier transform infrared (FT-IR) spectroscopy and Optical spectroscopy. Particular attention was devoted to the study of chemical modifications by UV irradiation, which induced chain scissions in the superficial PMMA layers. Results demonstrated that the lens transmission to the visible radiation is not particularly reduced by a long exposition to UV radiation at a fluence of 200 mJ/cm2, up to 19 h.

查看原文本刊更多论文

用 365 纳米紫外线灯照射 PMMA 眼内透镜

摘要聚甲基丙烯酸甲酯（PMMA）制成的眼内透镜（IOL）在空气中和室温下经过紫外线灯不同时间的照射。使用衰减全反射（ATR）耦合傅立叶变换红外（FT-IR）光谱和光学光谱对镜片中诱导的大分子修饰进行了研究。研究人员特别关注了紫外线照射引起的化学修饰，紫外线照射会在 PMMA 表层引起链裂解。结果表明，在 200 mJ/cm2 的紫外线辐射下长时间暴露长达 19 小时，镜片对可见光的透射率并不会特别降低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Polymer Processing 工程技术-高分子科学

CiteScore

2.20

自引率

7.70%

发文量

审稿时长

6 months

期刊介绍： International Polymer Processing offers original research contributions, invited review papers and recent technological developments in processing thermoplastics, thermosets, elastomers and fibers as well as polymer reaction engineering. For more than 25 years International Polymer Processing, the journal of the Polymer Processing Society, provides strictly peer-reviewed, high-quality articles and rapid communications from the leading experts around the world.