Soluble, High Molecular Weight Polysilsesquioxanes with Carboxylate Functionalities

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Trialkoxysilyl-containing monomers of the type (RO){sub 3}Si(CH{sub 2}){sub 3}C(O)OtBu (R = Me, Et) were prepared by hydrosilation of the corresponding vinylic tert-butyl esters CH{sub 3}CHCH{sub 2}C(O)OtBu. Acid- or base-catalyzed polymerization of the monomers leads to very high molecular weight polymers with relatively narrow polydispersities. The polymerization results in complete condensation of the alkoxy groups while the tert-butyl ester functionality remains fully intact. Partial or full deprotection of the tert-butyl group can easily be achieved to yield the corresponding carboxylic acid polymers. The ester and carboxylic acid functionalities of these new materials allow for their potential use in a variety of ... continued below

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16 p.

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RAHIMIAN,KAMYAR; LOY,DOUGLAS A. & WHEELER,DAVID R. July 14, 2000.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 12 times . More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Trialkoxysilyl-containing monomers of the type (RO){sub 3}Si(CH{sub 2}){sub 3}C(O)OtBu (R = Me, Et) were prepared by hydrosilation of the corresponding vinylic tert-butyl esters CH{sub 3}CHCH{sub 2}C(O)OtBu. Acid- or base-catalyzed polymerization of the monomers leads to very high molecular weight polymers with relatively narrow polydispersities. The polymerization results in complete condensation of the alkoxy groups while the tert-butyl ester functionality remains fully intact. Partial or full deprotection of the tert-butyl group can easily be achieved to yield the corresponding carboxylic acid polymers. The ester and carboxylic acid functionalities of these new materials allow for their potential use in a variety of applications such as scavenging of heavy metals.

Physical Description

16 p.

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OSTI as DE00759987

Medium: P; Size: 16 pages

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  • Journal Name: Macromolecules; Other Information: Submitted to Macromolecules

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  • Report No.: SAND2000-1901J
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 759987
  • Archival Resource Key: ark:/67531/metadc710697

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  • July 14, 2000

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 7, 2017, 3:29 p.m.

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RAHIMIAN,KAMYAR; LOY,DOUGLAS A. & WHEELER,DAVID R. Soluble, High Molecular Weight Polysilsesquioxanes with Carboxylate Functionalities, article, July 14, 2000; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc710697/: accessed December 9, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.