摘要
通过水热法制备出以含N原子的芳香化合物、柠檬酸钠和乙二胺为原料的水溶性碳点紫外吸收剂,并对不同芳香族化合物制备的碳点进行老化试验,最终筛选出具有耐老化性能的碳点(A-CDs),其中,富含-COOH、-NH_(2)等官能团且具有紫外全吸收性能,并进一步通过优化反应条件提高了其吸收性能。将A-CDs与聚乙烯醇(PVA)复合,形成高性能的紫外屏蔽膜。当CDs的质量分数从0.02%增加至0.1%时,紫外透过率从8%降低至3%,说明碳点能在薄膜中稳定存在。同时,碳点的加入可以降低薄膜在紫外照射下的衰老速率,维持薄膜的力学性能。
Water-soluble carbon point ultraviolet absorbers using aromatic compounds containing N atoms,sodium citrate and ethylenediamine as raw materials were prepared by hydrothermal method.Aging tests were carried out on carbon points prepared by different aromatic compounds,and carbon points(A-CDs)with aging resistance were finally screened out.Among them,A-CDs was rich in functional groups such as—COOH and—NH_(2) and had UV total absorption performance.The absorption performance was further improved by optimizing the reaction conditions.A-CDs was combined with polyvinyl alcohol(PVA)to form A high performance UV shielding film.When the mass fraction of CDs increases from 0.02%to 0.1%,the ultraviolet transmittance decreases from 8%to 3%,indicating that carbon points can exist stably in the film.At the same time,the addition of carbon points can reduce the aging rate of the film under ultraviolet irradiation and maintain the mechanical properties of the film.
作者
胡靖怡
郑雅桐
叶炜浩
刘应亮
HU Jing-Yi;ZHENG Ya-Tong;YE Wei-Hao;LIU Ying-Liang(College of Materials and Energy,South China Agricultural University,Guangzhou 510642,China)
出处
《应用化学》
CAS
CSCD
北大核心
2023年第12期1700-1711,共12页
Chinese Journal of Applied Chemistry
基金
吉林烟草工业有限责任公司项目(No.JSYFZX-2021-03)资助。
