纸张水光漂白用发光二极管(LED)

IF 0.7 4区 管理学 Q3 INFORMATION SCIENCE & LIBRARY SCIENCE
Benjamin Kirschner, I. Brückle, U. Henniges
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引用次数: 3

摘要

摘要对高性能日光LED灯与HID灯的纸张光漂白性能进行了比较。LED可以放置在比HID灯更接近物体的位置,从而显着增加均匀的光照射。两个色温分别为4000 K和6500 K的商用LED系统安装在一个可转换的测试装置中,该装置带有聚丙烯托盘,默认曝光距离为10 cm和20 cm。一个HID灯在60厘米和120厘米的距离上作为参考。两张自然老化的破布纸的样品浸泡在水中,用LED系统和HID进行漂白。所有三种光源都增加了亮度(CIELAB L*),尽管色温为4000 K的led最有效。对纤维素的摩尔质量和羰基含量没有负面影响,而6500 K色温的led则使纤维素的摩尔质量降低,羰基含量增加。4000 K或类似色温的led是一种很有前途的选择,可以改善纸张的光漂白,减少处理和水暴露时间,消除紫外线辐射。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Light Emitting Diodes (LED) for Aqueous Light Bleaching of Paper
Abstract High performance daylight LED lamps are compared with HID lamps for light bleaching of paper. The LED can be placed in closer proximity to the object than the HID lamps, causing a significantly increased, uniform light exposure. Two commercial LED systems with 4000 K and 6500 K colour temperature were installed in a convertible test device with a polypropylene tray in default exposure distance of 10 cm and 20 cm. A HID lamp in 60 cm and 120 cm distance served as a reference. Samples of two naturally aged rag papers were bleached with both LED systems and with the HID while immersed in water. All three light sources increased brightness (CIELAB L*), though the LEDs with 4000 K colour temperature were most effective. They had no negative effect on the molar mass and the cellulose carbonyl group content while LEDs with 6500 K colour temperature caused molar mass decrease and carbonyl group increase. LEDs of a 4000 K or similar colour temperature are a promising option for improved light bleaching of paper, reducing the treatment and aqueous exposure time and eliminating UV radiation.
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来源期刊
CiteScore
1.00
自引率
0.00%
发文量
15
期刊介绍: Restaurator is the only international periodical specializing exclusively in the conservation of library and archive materials. Articles examine the many important aspects of this subject area, such as technology, practical experience and organization. They also focus on scientific basics: Many articles deal with the development of new preservation techniques and the improvement and better understanding of established methods. The articles are written in English with summaries in English, French and German. By reading Restaurator regularly, librarians, archivists and restorers can keep up to date with the latest research and developments. The editorial committee is made up of experts from well-known institutions and organizations from all over the world
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