Cyclotriphosphazene-containing polymeric nanotubes: synthesis, properties, and formation mechanism
Cyclotriphosphazene-containing polymeric nanotubes: synthesis, properties, and formation mechanism
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含环三磷腈的聚合物纳米管：合成、性能和形成机制
DOI：
10.1007/s10853-016-9731-z
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发表时间：
2016-01
影响因子：
4.5
通讯作者：
Tian Yongsheng
中科院分区：
文献类型：
--
作者：
Li Zhenke;Wang Guanghui;Ren Wenjing;Zhang Aiqing;An Liang;Tian Yongsheng
以六氯环三磷腈和三聚氰胺为原料，吡啶为溶剂和酸受体，通过缩聚反应成功地合成了高交联的含环三磷腈的聚合物纳米管。用SEM和TEM研究了所得到的纳米管的表面粗糙，一端封闭，长度在几微米范围，外径在50-250 nm范围，两端内径分别在50-100和100-200 nm范围。提出了自模板导向法的形成机理。为了验证这一机理，用扫描电镜跟踪了不同聚合阶段的产物。此外，三聚氰胺在聚合过程中起到了至关重要的作用，引导了纳米管结构的形成。纳米管的热分解起始温度为220 °C，在800 °C时残余量大于40%。在220 ℃、350 ℃和800 ℃下，纳米管的形貌分别经历了从单分散纳米管到聚集态和海绵状结构的过程。
Highly crosslinked, cyclotriphosphazene-containing polymer nanotubes have been successfully synthesized by polycondensation between hexachlorocyclotriphosphazene and melamine with pyridine as solution and acid-acceptor. The obtained nanotubes with rough surface, closed at one end, of lengths in several micrometers range, outer diameter in the range of 50–250 nm, and two ends of inner diameters in the range of 50–100 and 100–200 nm, respectively have been investigated by SEM and TEM. The formation mechanism has been proposed and named as self-template directing approach. In order to verify this mechanism, the products at variable stages of polymerization were traced by SEM. In addition, the melamine played a crucial role during the polymerization, guiding the formation of nanotube’s structure. The nanotubes showed remarkable thermal performance with the initial decomposition temperature at 220 °C and the residual is more than 40 % at 800 °C. Also, the morphology of nanotubes has undergone a progress from monodispersed nanotubes, to aggregation state, and to sponge-like structure at 220, 350, and 800 °C, respectively.
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DOI：
10.1016/j.mseb.2008.10.027
发表时间：
2008-09
影响因子：
3.6
作者：
Yanguo Zhu;Xiaobin Huang;Jianwei Fu;Gang Wang;Xiaozhen Tang
通讯作者：
Yanguo Zhu;Xiaobin Huang;Jianwei Fu;Gang Wang;Xiaozhen Tang
影响因子：
4.5
作者：
Elif Okutan;Gulsah Aydin;Ferda Hacıvelioğlu;S. K. Beyaz;Serkan Yeşilot;A. KiliÇ
通讯作者：
Elif Okutan;Gulsah Aydin;Ferda Hacıvelioğlu;S. K. Beyaz;Serkan Yeşilot;A. KiliÇ
影响因子：
4.4
作者：
Jianzhong Xu;Z. He;Weihong Wu;Haiyun Ma;Jixing Xie;H. Qu;Y. Jiao
通讯作者：
Jianzhong Xu;Z. He;Weihong Wu;Haiyun Ma;Jixing Xie;H. Qu;Y. Jiao
中空介孔碳球——优良的胆红素吸附剂
影响因子：
4.9
作者：
Guo, Limin;Zhang, Lingxia;Shi, Jianlin
通讯作者：
Shi, Jianlin
影响因子：
3.2
作者：
Wang, Yan;Shi, Leilei;Mu, Jianxin
通讯作者：
Mu, Jianxin