Aqueous Phase Separation Behavior of Highly Syndiotactic, High Molecular Weight Polymers with Densely Packed Hydroxy-Containing Side Groups

Content Provider	Semantic Scholar
Author	Tromp, Dorette S. Lankelma, Marianne Valk, Hannah De Jong, Emile De Josselin De Bruin, Bas De
Copyright Year	2018
Abstract	Herein we describe the Rh-catalyzed C1 polymerization of silyl-protected diazoacetates of the general formula HC(=N2)C(=O)O(CH2) x OSiR3, where x = 2-5. After polymerization and subsequent desilylation, syndiotactic polymers bearing a hydroxy-containing side group on every backbone carbon are obtained. The molecular weight of the desired polymers can be controlled via chain transfer with methanol during the polymerization. The produced polymers are compared to atactic analogues formed by [(η3-C3H5)PdCl]-catalyzed polymerization of silyl-protected diazoacetates with the same general formula. While the polymers produced by the Rh and Pd catalysts have the same hydrophilic/hydrophobic balance, the stereoregularity of the polymers formed by the Rh catalyst was found to be of influence on the thermoresponsive behavior of the polymer. The effect of this stereoregularity on the thermoresponsive phase separation behavior of the produced polymers in aqueous solution was investigated.
Starting Page	7248
Ending Page	7256
Page Count	9
File Format	PDF HTM / HTML
PubMed reference number	30270941v1
Alternate Webpage(s)	https://doi.org/10.1021/acs.macromol.8b01150
DOI	10.1021/acs.macromol.8b01150
Journal	Macromolecules
Volume Number	51
Language	English
Access Restriction	Open
Subject Keyword	Heparin, Low-Molecular-Weight Methanol Molecular Weight Palladium Polymers Rhodium Vertebral column hydroxyl group
Content Type	Text
Resource Type	Article