| 2-羟基-4-甲氧基二苯甲酮-5-磺酸插层水滑石的制备及性能 |
| Preparation and Characterization of 2-Hydroxy-4-Methoxy Benzophenone-5-Sulfonic Acid Intercalated MgAl Layered Double Hydroxides |
| 作者 | 单位 | E-mail | | 赵天宝 | 四川大学高分子研究所, 高分子材料工程国家重点实验室, 成都 610065 | | | 张晓飞 | 四川大学高分子研究所, 高分子材料工程国家重点实验室, 成都 610065
国家包装产品质量监督检验中心(成都), 成都市产品质量监督检验院, 成都 610100 | | | 吴宏 | 四川大学高分子研究所, 高分子材料工程国家重点实验室, 成都 610065 | wh@scu.edu.cn | | 郭少云 | 四川大学高分子研究所, 高分子材料工程国家重点实验室, 成都 610065 | nic7702@scu.edu.cn |
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| 摘要: 以层状镁铝双金属氢氧化物(MgAl Layered Double Hydroxides,Mg-Al LDHs)为主体,以有机紫外光稳定剂2-羟基-4-甲氧基二苯甲酮-5-磺酸(BP)为客体,结合焙烧复原法和阴离子交换法合成了具有超分子结构有机-无机插层复合物(MgAl-BP-LDHs),研究了层间阴离子、反应介质、pH值、反应时间等因素对于插层材料超分子结构的影响。用FTIR、XRD、TG-DTA、UV-Vis和粒度分析对其不同尺度的结构、热稳定性和紫外光稳定性等进行表征。结果表明,采用阴离子交换法难以进行插层反应;通过焙烧复原法可显著降低MgAl-LDHs层间CO2-离子,从而有利于BP阴离子交换进入MgAl-LDHs层间,在去离子水中,水温100 ℃,pH=7,反应时间为48 h,BP过饱和的条件下合成得到最高插层率的MgAl-BP-LDHs;主体水滑石层板与客体以静电力和氢键相互作用,得到的超分子结构材料具有良好的热稳定及兼具优异的紫外屏蔽、吸收性能,是一种新型的有机-无机复合光热稳定剂。 |
| 关键词: 水滑石 2-羟基-4-甲氧基二苯甲酮-5-磺酸 超分子结构 插层 稳定性 |
| 基金项目: 国家自然科学基金(No.50533080,51273132,51227802)资助项目。 |
| Abstract: The influence factors of 2-hydroxy-4-methoxy benzophenone-5-sulfonic acid (BP)-intercalated MgAl layered double hydroxides (MgAl-LDHs) reaction such as interlayer anions, solvent, pH values and reaction time, were investigated. The MgAl-BP-LDHs was prepared through anion-exchange under the optimal condition and characterized further by laser particle-size analysis, thermo-gravimetric analysis and ultraviolet-visible analysis, respectively. The XRD results indicate that the optimal reaction condition for the BP-intercalated MgAl-LDHs (MgAl-BP-LDHs) with high intercalation rate is 48 h in deionized water with pH value of 7. The results show that particle size distribution of the MgAl-BP-LDHs is narrower than that of MgAl-LDHs. The thermal stability of the MgAl-BP-LDHs is improved due to strong supramolecular interactions between MgAl-LDHs layers and BP anions. Compared with MgAl-LDHs and BP, the ultraviolet absorption range and ability of the MgAl-BP-LDHs are increased greatly due to the synergistic effect. |
| Keywords: layered double hydroxides (LDHs) 2-hydroxy-4-methoxy benzophenone-5-sulfonic acid supramolecular structure intercalation stability |
| 投稿时间：2014-04-26 修订日期：2014-08-13 |
| 摘要点击次数: 2052 |
| 全文下载次数: 2156 |
| 赵天宝,张晓飞,吴宏,郭少云.2-羟基-4-甲氧基二苯甲酮-5-磺酸插层水滑石的制备及性能[J].无机化学学报,2014,30(11):2607-2614. |
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