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Synthesis and characterization of polyorganosiloxane (POS) containing nano‐scale tubular structure and its supramolecular clathrate
Author(s) -
Liu Chunqing,
Xie Ping,
Dai Daorong,
Zhang Rongben,
Zhu Chuanfeng,
Wang Chen
Publication year - 2001
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.80
Subject(s) - materials science , differential scanning calorimetry , supramolecular chemistry , clathrate hydrate , gel permeation chromatography , polymer chemistry , vapor pressure osmometry , molecule , chemical engineering , organic chemistry , vapor pressure , hydrate , chemistry , composite material , polymer , physics , engineering , thermodynamics
A new polyorganosiloxane (POS) was synthesized successfully according to two plus two (2 + 2) mode by hydrosilylation reaction of reactive cis‐isotactic ladder‐like polyallylsilsesquioxane (Allyl‐T) with coupling agent 1,1,3,3‐tetramethyldisiloxane (H‐MM) using dicyclopentadienyl‐dichloroplatinium ( Cp 2 PtCl 2 ) as catalyst. Moreover, a novel supramolecular POS clathrate (POS/C) was formed by in situ encapsulating rod‐like liquid crystal molecule within the pore of POS. The Allyl‐T was prepared by stepwise coupling polymerization. A variety of characterization methods including solubility test, FT‐IR, 1 H − NMR , differential scanning calorimetry (DSC) gel permeation chromatography (GPC), vapor pressure osmometry (VPO), X‐ray diffraction (XRD), atomic force microscopy (AFM), polarized optical microscopy (POM) and molecular simulation not only indicates nano‐scale tubular structures exist in the POS though some defective structures still exist, but also proves that novel soluble supramolecular clathrate has been formed. Copyright © 2001 John Wiley & Sons, Ltd.