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ARS Home » Southeast Area » New Orleans, Louisiana » Southern Regional Research Center » Cotton Chemistry and Utilization Research » Research » Publications at this Location » Publication #138324
Title: METAL COMPLEXING SILOXANE POLYMERS

Author
item Gallagher, Skip

Submitted to: American Chemical Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 8/20/2002
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Novel silicone polymers containing pendant phosphonate groups have been synthesized. A new silicone monomer, (CH3O)2CH3Si(CH2)3P=O(OCH2CH3)2 has been copolymerized with dimethyldimethoxysilane to form polymers capable of binding metal salts. The viscous liquids can complex a variety of metals, including zinc chloride and uranyl nitrate, through the phosphoryl oxygen, P=O. A second monomer, (CH3O)3Si(CH2)3P=O(OCH2CH3)2 , has been used to create crosslinked materials containing dissolved metal salts. The cured polysiloxanes are transparent films whose color varies according to the metal incorporated. The resulting polymers have been characterized by infrared spectroscopy, NMR (1H, 13C, 31P and 29Si) and thermogravimetric gravimetric analysis.