Indian materials smart materials
News Insight

Prof. Ashutosh Tiwari, Editor-in-Chief has been honoured Scientists with Adv Mater Lett Award 2013.

Online Advertising

Adv Mat Lett is an official journal of IAAM

VBRI Press is a member of CrossRefDOAJ
Adv Mat Lett is a member of DOAJ

fullabstractpdf

Get PDF

Full Article

Ring Opening Polymerization Of Lactide By Using Zinc Prolinate Catalyst

Asutosh Kumar Pandey

Volume 5, Issue 1, Page 44-51 | DOI: 10.5185/amlett.2013.6493

Keywords:

Zinc prolinate; lactides; ROP; MALDI-ToF-MS; linear polymer.

Abstract: 

Zinc salts of L-proline, D-proline were used in homopolymerization of L, L-lactide and D, L-lactide.  Linear PLA oligomer with`Mn 2900-3400 Da, can be prepared with zinc (L-prolinate)2 catalyst. Less racemization were occurred in presence of Zn (L-prolinate)2 than Zn (D-prolinate)2.  The catalyst structure of Zn (L-prolinate) 2 and Zn (D-prolinate)2 remains intact after polymerization. The zinc is bioactive molecule so these polymers prepared by using this catalyst are bioabsarbable. The resulting polymers were characterized by infrared spectroscopy (IR), size exclusion chromatatography (SEC),  differential scanning calorimetry (DSC), thermo gravimetric analysis (TGA), 13C NMR, 13C Cross Polarization /Magic Angle Spinning (13C CP/MAS) and MALDI ToF-MS. Copyright © 2014 VBRI press. 

fullabstractpdf

Get PDF

Full Article