@article { ISI:000350247300002,
	title = {High molecular weight polylactic acids by polyesterification using diisopropylcarbodiimide (DIPC) and 4-(dimethylamino) pyridinium ptoluene sulfonate (DPTS)},
	journal = {Polymer Bulletin	},
	volume = {72},
	number = {3},
	year = {2015},
	month = {MAR},
	pages = {405-415},
	publisher = {SPRINGER},
	address = {233 SPRING ST, NEW YORK, NY 10013 USA},
	abstract = {<p>High molecular weight poly(l-lactic acid) has been prepared from the corresponding functionally terminated oligomers employing a polyesterification method at room temperature using diisopropylcarbodiimide and 4-(dimethylamino) pyridinium-p-toluene sulfonate. Self-condensation of hydroxyl and carboxylic acid-terminated poly(l-lactic acid) oligomers (M (n) : similar to 1,000) resulted in polymers with high molecular weights (M (n) \&gt; 45,000) under mild conditions. End-group analysis by MALDI-TOF provided evidence for N-acylurea formation in the product under the reaction conditions employed.</p>},
	issn = {0170-0839},
	doi = {10.1007/s00289-014-1285-0},
	author = {Shyamroy, S. and Garnaik, Baijayantimala and Sivaram, S.}
}
