Synthesis and Characterization of Carborane-containing Poly(hydroxy ethers) with Excellent Thermal Stability
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Synthesis and Characterization of Carborane-containing Poly(hydroxy ethers) with Excellent Thermal Stability
Chinese Journal of Polymer ScienceVol. 35, Issue 12, Pages: 1463-1473(2017)
Affiliations:
a.Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
b.School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China
Zhen Yang, Ning Li, Xiao-xue Yang, et al. Synthesis and Characterization of Carborane-containing Poly(hydroxy ethers) with Excellent Thermal Stability[J]. Chinese Journal of Polymer Science, 2017, 35(12): 1463-1473.
DOI:
Zhen Yang, Ning Li, Xiao-xue Yang, et al. Synthesis and Characterization of Carborane-containing Poly(hydroxy ethers) with Excellent Thermal Stability[J]. Chinese Journal of Polymer Science, 2017, 35(12): 1463-1473.DOI: 10.1007/s10118-017-1994-6.
Synthesis and Characterization of Carborane-containing Poly(hydroxy ethers) with Excellent Thermal Stability
B-NMR were utilized to characterize the obtained polymers. TGA test was conducted under nitrogen and air. It is found that the shielding effect of carborane moiety on its adjacent aromatic structures contributes to high initial decomposition temperatures
while oxygen in air has an adverse effect on the initial decomposition temperature. The oxygen can combine with polymer chain to form peroxide and hydroperoxide groups
which are more reactive during the degradation process. Besides
o-carborane-containing poly(hydroxy ethers) have high char yield at elevated temperatures. The boron atom combines with oxygen from the polymer structure or/and from air
thus to form a three-dimensional network linked with B-O-B and B-C bonds
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