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Mechanically linked polycarbonate
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UNSPECIFIED (2003) Mechanically linked polycarbonate. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 125 (8). pp. 2200-2207. doi:10.1021/ja0292546 ISSN 0002-7863.
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Official URL: http://dx.doi.org/10.1021/ja0292546
Abstract
The synthesis, by solid-state copolymerization, and characterization of the first polycatenanes based on a commercial polymer are reported. Various amounts of a benzylic amide [2]catenane, the corresponding macrocycle, and a rigid bisphenol fluorene derivative have been quantitatively and homogeneously incorporated into bisphenol A polycarbonate. The resulting copolymers were characterized by size exclusion chromatography coupled with viscosimetry, H-1 NMR, differential scanning calorimetry, and dynamic mechanical analysis. The unexpectedly small influence of [2]catenane incorporation on the glass transition temperature of the copolymers points to remarkable internal mobility of the catenane comonomer rings. A new relaxation linked to the flexible catenane units is also observed. The studies represent a detailed structural characterization of a polymer containing small amounts of mechanical linkages in its backbone and demonstrate that significant effects can be induced by doping conventional polymers with small percentages (2-6% of repeat units) of flexible catenanes.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | ||||
Publisher: | AMER CHEMICAL SOC | ||||
ISSN: | 0002-7863 | ||||
Official Date: | 26 February 2003 | ||||
Dates: |
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Volume: | 125 | ||||
Number: | 8 | ||||
Number of Pages: | 8 | ||||
Page Range: | pp. 2200-2207 | ||||
DOI: | 10.1021/ja0292546 | ||||
Publication Status: | Published |
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