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Acta Chimica Sinica >

2015 , Vol. 73 >Issue 2: 126 - 130

DOI: https://doi.org/10.6023/A14120836

Article

Preparation of Polymer Microtubes via RAFT Polymerization of Sole MBA Xerogel Fibers

  • Zhang Yaqing ,
  • Tang Liming ,
  • Li Qi
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  • a Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
    b Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, China

Received date: 2014-12-03

  Online published: 2015-01-29

Supported by

Project supported by the National Natural Science Foundation of China (Nos. 21174079, 20874055) and the 973 Program (No. 2014CB932202).

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Abstract

The influence of gelation temperature on the size of MBA xerogel fibers was studied. The results indicated that the average diameter of MBA fibers became smaller as the decrease of gelation temperature, and the MBA fibers with average diameter of 1.1 μm were obtained at gelation temperature of -25 ℃. Without comonomer, the small sized MBA fibers with diameter of 1.1 μm were used as both templates and monomer source for preparing polymer microtubes via reversible addition-fragmentation chain transfer (RAFT) polymerization. Polymer tubes with well-shaped morphology and self-supporting ability were obtained in relatively high yield. The influence of various reaction conditions on the polymerization was investigated, which revealed that the amount of RAFT reagent, the amount of initiator and reaction temperature could affect both the morphology and the yield of the products. The morphology and composition of polymer microtubes were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM) and infrared spectrometer, respectively. The thermogravimetric analysis indicated high thermal stability of the product.

Key words： RAFT polymerization; MBA xerogel fiber; polymer microtube; morphology

Cite this article

Zhang Yaqing , Tang Liming , Li Qi . Preparation of Polymer Microtubes via RAFT Polymerization of Sole MBA Xerogel Fibers[J]. Acta Chimica Sinica, 2015 , 73(2) : 126 -130 . DOI: 10.6023/A14120836

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