@article { ISI:000285510500001,
	title = {Copolymerzation of L,L-lactide with epsilon-caprolactone by using novel zinc L-proline organometallic catalyst},
	journal = {E-Polymers},
	year = {2010},
	month = {DEC},
	pages = {139},
	publisher = {EUROPEAN POLYMER FEDERATION},
	address = {1, QUAI LEZAY-MARNESIA, F067000 STRASBOURG, FRANCE},
	abstract = {<p>Copolyesters based on L, L-lactide (LA) and e-caprolactone (CL) with different LA: epsilon-CL ratios were synthesized by ring opening polymerization using zinc (L-proline) as a catalyst. Ring opening polymerization results in random P(L, L-lactide-epsilon-caprolactone) copolymers of molecular weights between 9,800 to 30,000 and block copolymer up to 51,800 Da. H-1 NMR spectroscopy analysis was used for calculation of monomer incorporation in the copolymer. FT-IR spectra were used to differentiate between random and block copolymer using carbonyl region splitting. C-13 quantitative NMR spectroscopy analysis coupled with information from TGA and DSC allowed determination of the polymer structure. Copolymers (CP-1, CP-2 and CP-3) prepared by ROP are random copolymer (h \&gt; 1), while CP-4 prepared by ROP (sequential addition of epsilon-caprolactone and L, L-lactide) has a multi block character (h \&lt; 1). The LA number-average sequence length (L-LA) decreased from 14 to 5 for LA-CL 80:20 to 50:50 copolymers prepared by ROP. The copolymer (CP-4) prepared by sequential addition showed the number-average sequence length (L-LA) to be 83.0.</p>},
	issn = {1618-7229},
	author = {Pandey, Asutosh K.}
}
@article {42643,
	title = {Copolymerization of aleuritic acid with l-lactic acid and study the aggregation behavior in different solvents},
	journal = {International Journal of Research in Pharmacy and Chemistry},
	volume = {3},
	year = {2013},
	month = {JAN},
	abstract = {<p>In this present work, we highlight the copolymerization of L-lactic acid (L-LA with protected aleuritic acid in presence of Lewis acid catalyst using dehyropolycondensation method. The resulted copolymers are pliable, soft, waxy or even viscous liquid copolymers influenced by the aleuritic acid content. The purpose of this study is to investigate the physical properties. In addition, deprotected copolymers focus micelle-like aggregates in various organic solvents and mixed organic solvent at various proportions.</p>},
	issn = {2231-2781},
	author = {Pandey, Asutosh K. and Garnaik, Baijayantimala}
}
