NDLI: Semi-aromatic polyesters by alternating ring-opening copolymerisation of styrene oxide and anhydrides

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Polymer Chemistry Vol - 3 Issue - 4

Polymer Chemistry Vol - 3 Issue - 3

Polymer Chemistry Vol - 3 Issue - 2

Polymer Chemistry Vol -2

Polymer Chemistry Vol -1

Semi-aromatic polyesters by alternating ring-opening copolymerisation of styrene oxide and anhydrides

Content Provider	Royal Society of Chemistry (RSC)
Author	Duchateau, Rob Paoniasari, Anita Nejad, Elham Hosseini Koning, Cor E.
Copyright Year	2012
Abstract	Ring-opening copolymerisation of styrene oxide with alicyclic anhydrides containing different ring strains (succinic anhydride, maleic anhydride, citraconic anhydride, cyclopropane-1,2-dicarboxylic acid anhydride, cyclopentane-1,2-dicarboxylic acid anhydride and phthalic anhydride) was performed applying metal salen and tetraphenyl porphyrin complexes where for (salen)MX, M = Cr, X = Cl (1), M = Al, X = Cl (2), M = Mn, X = Cl (3), M = Co, X = OAc (4) and salen = N,N-bis(3,5-di-tert-butylsalicylidene)-diimine and for porphyrin complex, M = Cr, X = Cl (5), M = Mn, X = Cl (6), M = Co, X = OAc (7). The chromium catalysts performed best and therefore 1 was chosen as the selected catalyst for further studies. Investigation of the effect of different cocatalysts on the copolymerisation of styrene oxide and phthalic anhydride revealed that phosphines and onium salt showed quite similar activities whereas N-heterocyclic based amines showed somewhat lower activity. 1H NMR and MALDI-ToF-MS spectra of the copolymers formed confirmed the alternating microstructures. Increasing the monomer to catalyst ratio resulted in the isomerisation of styrene oxide to phenyl ethanal. The aldehyde functions as a chain transfer agent influencing the molecular weight of the polymers. Copolymerisation of styrene oxide with anhydrides bearing a double bond in their structure, such as maleic anhydride and citraconic anhydride, was shown to be highly dependent on temperature, time, type of cocatalyst and solvent used in the copolymerisation reaction.
Starting Page	1308
Ending Page	1313
Page Count	6
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	3
Issue Number	5
Journal	Polymer Chemistry
DOI	10.1039/c2py20026k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Salen ligand Quaternary ammonium cation Succinic anhydride Phthalic anhydride Isomerization Alicyclic compound Phenyl group Aldehyde Organic acid anhydride Styrene oxide Maleic anhydride Chain transfer Alkene Cyclopropane Carboxylic acid Porphyrin Diimine Chromium Cyclopentane Nuclear magnetic resonance Monomer Solvent
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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