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Synthesis of Ladderlike Polyorganosiloxanes by H-Bongding Self-Assembling Template

Author: LiuYingHua
Tutor: WanYouZhi
School: Beijing University of Chemical Technology
Course: Applied Chemistry
Keywords: Hydrogen bonds Supramolecular self-assembly Gradually coupling polymerization Trapezoidal polymer
CLC: O634.41
Type: Master's thesis
Year: 2006
Downloads: 107
Quote: 0
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Abstract


The microstructure controlled trapezoidal polymer Polymer Science , intersection of supramolecular chemistry and materials science and cutting-edge . In this thesis, the hydrogen bonds to the template , using the theory of self-assembled supramolecular synthesized a series of high regularity trapezoidal polyorganosiloxane . The main research content and results are as follows : 1 . Hydrogen bonds with aramid synthetic polyvinyl silsesquioxane self-assembly as a template . And separating the process out of the pre - amidolysis so extremely sensitive to air, water alcohol solution of the pre - coupling intermediate product , which proved terephthalamide monoethanolamine in the whole reaction process , does play a desired pre- coupling role. However , due to the selected solvent dimethylformamide large polarity and ethanolamine terephthalamide structural problems such generated polyvinyl silsesquioxane difficulties . Therefore , by improving the structure of the selected template agent , still utilize the aryl amide hydrogen bond self-assembled synthesized organic bridging group trapezoidal polyvinyl siloxane . The organic bridging group trapezoidal polyvinyl siloxane polymers characterized by a series of means , including : 29 < / sup > Si -NMR , XRD , DSC results showed that the obtained having a higher tacticity . 2. Through \ 29 Si-NMR, XRD, DSC showed that the synthetic trapezoidal silsesquioxane trapezoidal structure . The polymer has a broad application prospects in the field of nonlinear optical materials and liquid crystal display materials , and provides a new way of thinking for the future new ladder polymer synthesis and functionalization .

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Elements of the organic polymer > Section IV group elements of organic polymers > Silicone polymer
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