Ring-opening copolymerization of maleic anhydride or L-Lactide with tert-butyl glycidyl ether by using efficient Ti and Zr benzoxazole-substituted 8-Hydroxyquinolinate catalysts

Polymer ◽  
2017 ◽  
Vol 123 ◽  
pp. 267-281 ◽  
Author(s):  
Sreenath Pappuru ◽  
Debashis Chakraborty ◽  
Venkatachalam Ramkumar ◽  
Dillip Kumar Chand
Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4044
Author(s):  
Muneer Shaik ◽  
Vamshi K. Chidara ◽  
Srinivas Abbina ◽  
Guodong Du

Ring opening copolymerization (ROCOP) of epoxides and cyclic anhydrides has become an attractive approach for the synthesis of biodegradable polyesters with various compositions. Encouraged by the efficiency and versatility of a series of amido-oxazolinate zinc complexes, in this study they were shown to be active catalysts for the synthesis of unsaturated polyesters via ROCOP of maleic anhydride and various epoxides. The relative activity of epoxides in these reactions was observed to be styrene oxide > cyclohexene oxide > phenyl glycidyl ether, which could be correlated with the electronic and steric features of the substrate. To provide more structural possibilities for the polyesters, the difference in epoxide reactivity was exploited in an attempt to prepare block terpolymers from one anhydride and two epoxides. Terpolymerization was carried out in one or two steps in a single pot. The thermal characterization by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) techniques suggested that the resulting materials were mostly random terpolymers.


2016 ◽  
Vol 7 (31) ◽  
pp. 5050-5059 ◽  
Author(s):  
G. Kapiti ◽  
H. Keul ◽  
M. Möller

Functional poly(ethylene glycol) building blocks were synthesized with ethylene carbonate as a new source for ethylene oxide repeating units.


Author(s):  
Parveen Kumar Deralia ◽  
Aline Maire du Poset ◽  
Anja Lund ◽  
Anette Larsson ◽  
Anna Ström ◽  
...  

2001 ◽  
Author(s):  
Francis M. Houlihan ◽  
Donna Person ◽  
Omkaram Nalamasu ◽  
Ilya Rushkin ◽  
Ognian N. Dimov ◽  
...  

2020 ◽  
Vol 22 (17) ◽  
pp. 5742-5750
Author(s):  
Binyuan Liu ◽  
Junwu Chen ◽  
Ning Liu ◽  
Huining Ding ◽  
Xianmin Wu ◽  
...  

A series of bio-based polyesters are efficiently synthesized by ring-opening copolymerizations of eugenyl glycidyl ether and various cyclic anhydrides using a binuclear [OSSO]CrCl complex in conjuction with PPNCl.


2019 ◽  
Vol 14 ◽  
pp. 155892501984971
Author(s):  
Zheng Tian ◽  
Lisha Pan ◽  
Qing Pan

Polypropylene grafted with maleic anhydride and styrene [PP- g-(MAH- co-St)] was prepared by melt grafting. Fourier transform-infrared spectroscopy showed that maleic anhydride in the form of cyclic anhydride was successfully grafted onto the main chains of polypropylene. PP- g-(MAH- co-St) acts as a compatibilizer for the poly(propylene carbonate)/polypropylene meltblown nonwoven fabric slices. The effect of different contents and grafting proportions of PP- g-(MAH- co-St) on the structure and performance of the poly(propylene carbonate)/polypropylene slices was investigated. The poly(propylene carbonate)/polypropylene slices had favorable compatibility, tensile properties, thermal stability, and degradability, and their melt flow rates were reduced by the addition of PP- g-(MAH- co-St). Fourier transform-infrared spectroscopy and 1H nuclear magnetic resonance spectroscopy spectra showed that ring-opening reactions occur between the anhydride functional groups of PP- g-(MAH- co-St) and poly(propylene carbonate). Ring-opening reactions, chemical bonds, cocrystallization, increased interface adhesion forces, and reduced interfacial tension may be the mechanisms by which PP- g-(MAH- co-St) acts a compatibilizer for poly(propylene carbonate)/polypropylene slices.


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