In situ molecular composites of ladder polyphenylsilsesquioxane and polyisophthalamide and their electro-spinning fibers
In situ molecular composites of ladder polyphenylsilsesquioxane and polyisophthalamide and their electro-spinning fibers
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梯形聚苯基倍半硅氧烷和聚间苯二甲酰胺的原位分子复合材料及其静电纺丝纤维
DOI：
10.1039/c0py00033g
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发表时间：
2010-08
影响因子：
4.6
通讯作者：
Zhang, Rongben
中科院分区：
文献类型：
--
作者：
Ren, Zhongjie;Ren, Zhongjie;Tian, Ye;Tian, Ye;Xie, Ping;Xie, Ping;Yan, Shouke;Yan, Shouke;Zhang, Rongben;Zhang, Rongben
首次采用超分子模板导向同步两步合成法原位制备了梯形聚苯基倍半硅氧烷（Ph-LPSQ）与烷氧基取代聚酰胺（Cn-PA）的分子复合物，主要包括（A）硅烷基化二氨基苯桥联梯形聚苯基硅氧烷（Ph-DLPS）和（B）间苯二甲酰氯（IPC）的基于自组装梯形超结构的同步生长聚合，诱导甲硅烷基化的二氨基亚苯基桥的同步裂解和原位脱氯化氢缩合。采用静电纺丝法制备了亚微米级的复合纤维，并利用扫描电镜对其形貌进行了表征。为了提高IPC的可纺性，在IPC的苯环上引入不同长度的烷氧基，制备烷氧基取代聚酰胺（Cn-PA）。静电纺丝纤维的成纤能力和形态与所用溶剂、溶液浓度和烷氧基的长度密切相关。采用氯仿溶液纺制了Cn-PA/Ph-LPSQ的均匀连续纤维。较长的侧链可导致形成具有较小直径的纤维。通过FT-IR光谱分析了Ph-LPSQ和Cn-PA的分子复合机理，指出Cn-PA的酰胺基与Ph-LPSQ的Si-O-Si键之间的氢键对它们的均匀复合起着决定性的作用。
The molecular composites of ladder polyphenylsilsesquioxane (Ph-LPSQ) and alkoxy substituted polyisophthalamide (Cn-PA) are in situ prepared for the first time by supramolecular template directed synchronous two-step synthesis, mainly including (A) self-assembled ladder superstructure-based synchronous growth polymerization of the silylated diaminophenylene-bridged ladder polyphenylsiloxane (Ph-DLPS) and (B) isophthalylchloride (IPC)-induced synchronous cleavage of the silylated diaminophenylene-bridge and in situ dehydrochlorination condensation. Moreover, novel composite fibers with sub-μm level diameters are prepared by electro-spinning and their morphologies are investigated by SEM. In order to improve the spinning capability, alkoxy groups in different lengths are introduced into the benzene ring of IPC to produce alkoxy substituted polyisophthalamide (Cn-PA). The fiber-forming ability and the morphology of the resulting electro-spun fibers depend strongly on the solvents used, solution concentration and lengths of the alkoxy groups. Uniform continuous fibers of Cn-PA/Ph-LPSQ are spun from chloroform solution. The longer side chains can result in the formation of a fiber with a smaller diameter. The molecular composition mechanism of Ph-LPSQ and Cn-PA is, in particular, examined using FT-IR spectroscopy, indicating that the hydrogen bond between the amide groups of Cn-PA and Si–O–Si bonds of Ph-LPSQ plays a decisive role in their uniform compounding.
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DOI：
10.1016/s0168-1176(96)04501-6
发表时间：
1997
期刊：
International Journal of Mass Spectrometry and Ion Processes
影响因子：
--
作者：
C. McEwen;C. Jackson;B. Larsen
通讯作者：
C. McEwen;C. Jackson;B. Larsen
影响因子：
5.5
作者：
Lee, Keun-Hyung;Kim, Kwan-Woo;Rabolt, John F.
通讯作者：
Rabolt, John F.
影响因子：
19
作者：
Ying-Jie Zhu;Jiangchang Zhang;Yongmei Zheng;Zhongbing Huang;Lin Feng;Lei Jiang
通讯作者：
Ying-Jie Zhu;Jiangchang Zhang;Yongmei Zheng;Zhongbing Huang;Lin Feng;Lei Jiang
DOI：
10.1021/jp075541q
发表时间：
2007-09
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
N. T. Xuyen;E. Ra;Hong‐Zhang Geng;Ki Kang Kim;K. An;Y. H. Lee
通讯作者：
N. T. Xuyen;E. Ra;Hong‐Zhang Geng;Ki Kang Kim;K. An;Y. H. Lee
影响因子：
4.6
作者：
Theron, SA;Zussman, E;Yarin, AL
通讯作者：
Yarin, AL