| dc.contributor | | en-US |
| dc.creator | Zhang, Yu | |
| dc.creator | Pang, Xuan | |
| dc.creator | Ma, Lili | |
| dc.creator | Tang, Zhaohui | |
| dc.date | 2017-06-16 | |
| dc.date.accessioned | 2019-04-16T16:43:01Z | |
| dc.date.available | 2019-04-16T16:43:01Z | |
| dc.identifier | https://www.jcchems.com/index.php/JCCHEMS/article/view/187 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/42464 | |
| dc.description | Stereoselective polymerization of lactide is receiving growing attention in polymer science. Herein, a five-coordinate aluminum siloxide complex, [2,2-dimethyl- 1,3-propylenebis(3,5-di-tert- butylsalicylideneiminato)] (triphenyl-silanolato) aluminium (III) (1), was prepared from AlEt3, N,N´-(2,2-dimethylpropylene) bis(3,5-di-tert-butylsalicylideneimine) and triphenyl-silanol. X-ray analysis demonstrated that 1 contained a five-coordinate aluminum atom with distorted trigonal bipyramidal geometry in the solid state. 1H NMR and 13C NMR spectra indicated that the two conformational stereoisomers of 1 tautomerizes rapidly in chloroform or toluene solution at room temperature. 1 showed high stereoselectivity (Pm = 0.84) for the ROP of rac-lactide in toluene at 100°C, and polymerized rac-lactide to crystalline polymer (Tm = 178°C). This is the first report of stereoselective polymerization of rac-lactide using aluminum siloxide as a catalyst. | en-US |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Sociedad Chilena de Química | en-US |
| dc.relation | https://www.jcchems.com/index.php/JCCHEMS/article/view/187/149 | |
| dc.rights | Copyright (c) 2017 Yu Zhang, Xuan Pang, Lili Ma, Zhaohui Tang | en-US |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0 | en-US |
| dc.source | Journal of the Chilean Chemical Society; Vol 62, No 2 (2017): Journal of the Chilean Chemical Society | en-US |
| dc.source | 0717-9707 | |
| dc.subject | Aluminum siloxide; Catalyst; Lactide; Stereoselective; Polymerization | en-US |
| dc.title | AN ALUMINUM SILOXIDE COMPLEX FOR STEREOSELECTIVE POLYMERIZATION OF RACEMIC LACTIDE | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | | en-US |
