纳米TiO_2/β-CD光催化纸耐老化性能的研究  

Study on Aging Resistance of Nano TiO_2/β-Cyclodextr inPhotocatalytic Paper

作　　者：严安[1] 刘泽华[1] 

机构地区：[1]天津科技大学天津市制浆造纸重点实验室,天津300457

出　　处：《造纸化学品》2010年第1期7-10,共4页Paper Chemicals

摘　　要：在紫外老化箱中对原纸表面涂覆不同比例的纳米TiO2/β-环糊精(β-CD)涂料的涂布纸进行抗紫外光返黄实验,并利用SEM和FT-IR等手段分析光照前后的纸张涂层结构和涂料成分。结果表明:经紫外光照30h后,涂布纸表面涂层稍有结块,而涂料成分没有发生明显变化;光照前后涂覆不同比例的纳米TiO2/β-CD涂料的涂布纸物理性能均优于涂布原纸,其中用含量为2%纳米TiO2和1%β-CD(均相对于涂料的质量分数)的涂料涂覆的涂布纸的物理性能和光学性能最好;用含量为3%纳米TiO2和1%β-CD的涂料涂覆的涂布纸不仅不能提高纸页的抗返黄能力,反而会加速其返黄进程。The color reversion experiment of paper coated with different ratios of nano-TiO/β -cyclodextrin（β -CD） in a standard NCE （Network of Centres of Excellence） photoreactor were studied. Both the structure of the coated paper and components of the coating were analysed by means of SEM and FT-IR. The results show that the components of the coating do not change but there is slight agglomeration on the surface of the coating after irradiated 30 hours. The physical properties of the paper coated with nano-TiO2/β-CD are superior to those of base paper. The paper coated with coatings containing 2% nano-TiO2 and 1% β-cyclodextrin （β-CD） shows best physical and light properties while the coatings containing 3% nano-TiO2 and 1%/β -cyclodextrin（β -CD） accelerate the color reversion of the coated paper.

关 键 词：紫外光 光返黄 纳米TIO2 Β-环糊精 

分 类 号：TS758.1[轻工技术与工程—制浆造纸工程]