ho esaminato i contesti in cui appare free lactide ed è termine a sè
anche in combinazione con content, IMO

purtroppo non trovo riscontri per lattide libero in italiano
per questo metto livello low

An equilibrium will be established between the copolymer and free lactide. This can limit the build-up of molecular weight and produce a copolymer containing a certain amount of free lactide. The free lactide provides some plasticizing effect that is often undesirable, and also tends to coat the surfaces of polymer processing equipment. For these reasons, the copolymerization process typically includes a devolatilization step during which the free lactide content of the polymer is reduced, preferably to less than 1% by weight, and more preferably less than 0.5% by weight. Other low molecular weight by-products and residual starting materials are usually removed during the devolatilization process.
http://www.google.com/patents/US8268954


As molecular weight increases, an equiHbrium is estabHshed between the polymer and free lactide, thus limiting the buUd-up of molecular weight and producing a polymer containing a certain amount of free lactide. The free lactide provides some plasticizing effect that is often undesirable
http://www.google.com.af/patents/WO2002100921A1?cl=en&hl=it

Polylactic Acid: PLA Biopolymer Technology and Applications
https://books.google.it/books?isbn=1437744605 -
Lee Tin Sin - 2012 - ‎Technology & Engineering
Methylene chloride is the solvent used to dissolve PLA and release the free lactide.


What is the best procedure to reduce the free monomer content below 1 ppm in the production of high viscosity Poli DADMAC-AM polymers for cosmetics?