首页
最新动态 交流合作 科研项目 论文著作 精彩瞬间 招生招聘
  • 课题组王佩同学论文在ACS Appl. Mater. Interfaces上发表
  • 来源:孔杰教授个人网站 2015-09-05
  • Pei Wang, Yusheng Tang*, Zhen Yu, Junwei Gu, and Jie Kong*, Advanced Aromatic Polymers with Excellent Antiatomic Oxygen Performance Derived from Molecular Precursor Strategy and Copolymerization of Polyhedral Oligomeric Silsesquioxane, ACS Appl. Mater. Interfaces, 2015, 7 (36): 20144-20155

    论文链接:http://pubs.acs.org/doi/abs/10.1021/acsami.5b05490

    Abstract:

    In this contribution, the advanced aromatic polymers with excellent antiatomic oxygen (AO) performance were designed and synthesized using molecular precursor strategy and copolymerization of polyhedral oligomeric silsesquioxane (POSS). A soluble poly(p-phenylene benzobisoxazole) (PBO) precursor, that is, TBS–PBO (tert-butyldimethylsilyl was denoted as TBS), was designed to overcome the poor solubility of PBO in organic solvents. Then the new copolymer of TBS–PBO–POSS was synthesized by the copolymerization of TBS–PBO and POSS, which possessed good solubility and film-forming ability in common organic solvents, such as N-methylpyrrolidone, N,N-dimethylacetamide, and dimethyl sulfoxide. More importantly, the TBS–PBO–POSS films exhibited outstanding antiatomic oxygen properties because of the incorporation of POSS monomers with cagelike structure into the main chain of copolymer, which drastically reduced the AO-induced erosion owing to the formation of the passivating silica layer on the surface of polymers. When the TBS–PBO–POSS films were exposed to AO effective fluences of 1.5495 × 1020 atom cm–2 (5 h) and 4.6486 × 1020 atom cm–2 (15 h), the relative mass loss was merely 0.19% and 0.41%, respectively. This work provides a new perspective and efficient strategy for the molecular design of aromatic heterocyclic polymers possessing excellent combination properties including processing convenience and antioxidative and mechanical properties, which can be employed as potential candidates to endure the aggressive environment encountered in low earth orbits.





  • [来源:中国聚合物网]
  • 了解更多请进入: 孔杰教授个人网站
相关新闻
  • · 课题组超支化高分子综述论文在Polym. Chem. 上发表(封面论文)
  • · 课题组张晓飞同学论文在J. Am. Ceram. Soc.上发表并获得专利授权
  • · 西工大承办第一届材料化学前沿国际学术会议(ICMCF2015)
  • · 课题组陈方方在Phys. Chem. Chem. Phys.上发表封面论文

关于我们  |  联系我们  

网站:中国聚合物网

polymer.cn Copyright ©2017