A joint team of Jiangnan University in Wuxi and the University of Nebraska-Lincoln found that when PLA fiber is first heated to 200 C followed by slow cooling, the heat resistance of the resulting intertwined complex has improved to > 200 C, and structural integrity was maintained in hot water. It is hoped that this new technology could substitute for the more expensive procedure to polymerize mixtures of D- and L-lactic acid to scPLA.
https://www.eurekalert.org/pub_releases/2017-08/uon-tca083017.php
China Bio news release, September 9, 2017