| 固定酚红的交联聚乙烯醇光化学pH敏感膜 |
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| 引用本文： | 罗发亮,刘志宏,陈天禄,龚波林. 固定酚红的交联聚乙烯醇光化学pH敏感膜[J]. 中国化学, 2006, 24(3): 341-344. DOI: 10.1002/cjoc.200690065 |
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| 作者姓名： | 罗发亮 刘志宏 陈天禄 龚波林 |
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| 作者单位： | [1]State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China [2]Province Key Laboratory of Energy and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （Nos. 50273037 and 20465001）. |
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| 摘 要： | An optical pH sensitive membrane for optical pH sensors has been developed by covalently immobilizing phenol red on optical transparent cross-linked polyvinyl alcohol （PVA） membrane surfaces. The phenol red was first reacted with acrylamide to form a product of acrylamide grafted phenol red （AAGP）, then the AAGP was covalently immobilized to the PVA membrane via surface grafting-polymerization using Fe^2＋/H2O2 as initiator. The performance of the pH sensitive membrane was investigated and the results showed that the pH sensitive membrane has some features including a linear response scope from pH 6.5 to 8.5 closed with phenol solution, a rapid response time （〈：20 s）, good reproducibility, reversibility, excellent stability and easiness of fabrication. These show that the pH sensitive membrane can be used as a sensitive layer for optical pH sensor.
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| 关 键 词： | 酚红 光学PH传感器 聚乙烯醇 膜 稳定性 |
| 收稿时间： | 2005-03-16 |
| 修稿时间： | 2005-03-162005-11-21 |
Cross-linked Polyvinyl Alcohol pH Sensitive Membrane Immobilized with Phenol Red for Optical pH Sensors |
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| Luo FaLiang;Liu ZhiHong;Chen TianLu;Gong BoLin. Cross-linked Polyvinyl Alcohol pH Sensitive Membrane Immobilized with Phenol Red for Optical pH Sensors[J]. Chinese Journal of Chemistry, 2006, 24(3): 341-344. DOI: 10.1002/cjoc.200690065 |
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| Authors: | Luo FaLiang Liu ZhiHong Chen TianLu Gong BoLin |
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| Abstract: | An optical pH sensitive membrane for optical pH sensors has been developed by covalently immobilizing phenol red on optical transparent cross‐linked polyvinyl alcohol (PVA) membrane surfaces. The phenol red was first reacted with acrylamide to form a product of acrylamide grafted phenol red (AAGP), then the AAGP was covalently immobilized to the PVA membrane via surface grafting‐polymerization using Fe2+/H2O2 as initiator. The performance of the pH sensitive membrane was investigated and the results showed that the pH sensitive membrane has some features including a linear response scope from pH 6.5 to 8.5 closed with phenol solution, a rapid response time (<20 s), good reproducibility, reversibility, excellent stability and easiness of fabrication. These show that the pH sensitive membrane can be used as a sensitive layer for optical pH sensor. |
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| Keywords: | phenol red optical pH sensor polyvinyl alcohol membrane |
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