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| 改性纳米二氧化钛光催化降解聚乙烯薄膜的研究 | |
| 引用本文： | 朱焕扬,杨斌,张剑平,朱惟德,施利毅.改性纳米二氧化钛光催化降解聚乙烯薄膜的研究[J].功能材料,2007,38(3):462-464,468. |
| 作者姓名： | 朱焕扬 杨斌 张剑平 朱惟德 施利毅 |
| 作者单位： | 1. 上海大学,理学院,上海,200444;上海大学,材料科学与工程学院,上海,200072 2. 上海交通大学,化工学院,上海,200240 3. 上海大学,理学院,上海,200444 4. 上海大学,材料科学与工程学院,上海,200072 5. 上海大学,理学院,上海,200444;上海大学,纳米研究中心,上海,200444 |
| 基金项目： | 上海市纳米科技专项基金 , 上海市纳米科技专项基金 |
| 摘 要： | 以硬脂酸钠改性的纳米TiO2为光催化剂,与LDPE树脂制备了nano-TiO2/PE复合薄膜.研究了该薄膜在紫外光照射条件下的降解性能,并进行了SEM、FI-IR、VHX-100数码显微镜等分析,测试了薄膜经辐照前后的力学性能、质量变化和分子量变化.研究结果表明,该薄膜在紫外光照射下降解性能明显提高,薄膜在40W、254nm的紫外光照射120h后,粘均分子量(Mη)降低27.1%,拉伸强度降低49.1%,断裂伸长率降低91.3%;照射144h后质量损失达16%(质量分数);辐照后薄膜的羰基含量升高. |
| 关 键 词： | 纳米TiO2 聚乙烯 光催化 降解 |
| 文章编号： | 1001-9731（2007）03-0462-03 |
| 修稿时间： | 2006-08-302006-10-07 |
Degradation of PE film by modified nano-TiO2 photocatalyst |
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| ZHU Huan-yang,YANG Bin,ZHANG Jian-ping,ZHU Wei-de,HI Li-yi.Degradation of PE film by modified nano-TiO2 photocatalyst[J].Journal of Functional Materials,2007,38(3):462-464,468. | |
| Authors: | ZHU Huan-yang YANG Bin ZHANG Jian-ping ZHU Wei-de HI Li-yi |
| Affiliation: | 1. College of Sciences, Shanghai University, Shanghai 200444, China; 2. School of Materials Science and Engineering, Shanghai University, Shanghai 200072,China; 3. School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China ; 4. Nano-Science and Technology Research Center, Shanghai University, Shanghai 200444 ,China |
| Abstract: | TiO2/PE composition films, which was prepared by LDPE and nano-TiO2 modified by sodium stearate, were studied in the irradiation condition of 40W 254nm UV light. SEM, digital microscope of VHX-100, FI-IR and other special analyses were used to characterize the films. The results of this study revealed that the degra- dation efficiency of TiO2/PE composition films was increased largely. After 120h irradiation on the films, the Mq decreased 27. 1%, stress tensile decreased 49.1%, the breaking elongation percentage decreased 91.3%. After 144h irradiation,the weight of the film lost 16wt%. After irradiation, the content of carbonyl increased in the films. |
| Keywords: | nano-TiO2 polyethylene photocatalysis degradation |
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