Preparation of hierarchical polyimide hollow spheres via a gas bubble templated transimidization induced crystallization process
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- 作者：Yuzhi Yan (1)
Lu Chen (1)
Xiang Li (1)
Zihua Chen (1)
Xikui Liu (1) xkliu@scu.edu.cn - 关键词：Polyimides – ; Bubble template – ; Hollow spheres – ; Transimidization induced crystallization
- 刊名：Polymer Bulletin
- 出版年：2012
- 出版时间：September 2012
- 年：2012
- 卷：69
- 期：6
- 页码：675-684
- 全文大小：600.1 KB
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- ISSN：1436-2449
文摘
Hierarchical polyimide hollow spheres consisting of crystalline nanoparticles were synthesized by a novel gas bubble templated transimidization induced crystallization process. The morphologies of the hollow spheres can be fine-tuned by changing the concentrations and the chemical structure of the monomers. Based on the experimental results, a possible formation mechanism of these polyimide hollow spheres was proposed based on the aggregation of the primary crystalline polyimide nanoparticles on the in situ formed gas bubbles as soft templates to minimize the interfacial energy.