Preparation of Highly Loaded PAA/PAH Layer-by-layer Films by Combining Acid Transformation and Templating Methods

doi:10.1007/s40242-019-8203-9

Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (2): 353-358.doi: 10.1007/s40242-019-8203-9

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Preparation of Highly Loaded PAA/PAH Layer-by-layer Films by Combining Acid Transformation and Templating Methods

XIA Qi¹, PAN Shaofeng¹, ZHANG Yi¹, AN Qi¹, ZHANG Qian^1,2, ZHANG Yihe¹

1. Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, P. R. China;
2. School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, P. R. China

Received:2018-06-19 Revised:2018-10-19 Online:2019-04-01 Published:2019-04-30
Contact: AN Qi, ZHANG Qian E-mail:an@cugb.edu.cn;zq@sdut.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.21673209), the Fundamental Research Funds for the Central Universities of China(Nos.2652015295, 2652017359) and the Student's Platform for Innovation and Entrepreneurship Training Program, China(No.201711415036).

Abstract

Abstract: Enhancing the molecular loading capability of layer-by-layer(LbL) method holds high importance in environmental and biomedical application. Here, we reported a strategy to prepare highly loaded poly(acrylic acid)(PAA)/poly(allylamine hydrochloride)(PAH) LbL films by combining the particulate templating strategy and acid treatment film transformation and realized the efficient loading of hydrophilic small molecules. The loaded molecules can be released in a pH-controlled manner. A slow release speed was observed in the acidic solutions with pH value of 3. Abrupt releases were observed at higher pH values(5 or 7).

Key words: Layer-by-layer, High load, Calcium carbonate template, pH-Controlled release

XIA Qi, PAN Shaofeng, ZHANG Yi, AN Qi, ZHANG Qian, ZHANG Yihe. Preparation of Highly Loaded PAA/PAH Layer-by-layer Films by Combining Acid Transformation and Templating Methods[J]. Chemical Research in Chinese Universities, 2019, 35(2): 353-358.

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Preparation of Highly Loaded PAA/PAH Layer-by-layer Films by Combining Acid Transformation and Templating Methods

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