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PLA ?lms have better ultraviolet light barrier properties than low density polyethylene (LDPE), but they are slightly worse than those of cellophane, polystyrene (PS) and poly(ethylene terephthalate) (PET).	Bruce 2024-12-1	016	Bruce 2024-12-1 08:32
The aim of this paper is to review the production techniques for PLAs, summarize the main properties of PLA and to delineate the main advantages and disadvantages of PLA as a polymeric packaging material.	Bruce 2024-12-1	016	Bruce 2024-12-1 08:32
Polylactides (PLAs) are a growing alternative as a packaging material for demanding markets.	Bruce 2024-12-1	017	Bruce 2024-12-1 08:32
PLA film are providing consumers with extra end-use bene?ts such as avoiding paying the green tax in Germany or meeting environmental regulations in Japan	Bruce 2024-12-1	020	Bruce 2024-12-1 08:32
PLA are truly biodegradable, derived from renewable resources	Bruce 2024-12-1	019	Bruce 2024-12-1 08:31
Polylactide polymers have gained enormous attention as a replacement for conventional synthetic packaging materials in the last decade.	Bruce 2024-12-1	016	Bruce 2024-12-1 08:31
The composting of PLA is enhanced by hydrolysis because of the absorption of water resulting in the hydrolysis of the ester linkages.	Bruce 2024-12-1	018	Bruce 2024-12-1 08:31
PLA can be recycled and has been certified as a compostable polymer according to ASTM D6400 and EN13432by the main international certifying entities	Bruce 2024-12-1	017	Bruce 2024-12-1 08:31
Polylactic Acid (PLA) is a pronounced biodegradable polymer which has been developed to be used in a broad range of applications due to its biocompatibility and would be able to solve the problems suffered from commercial polymeric membrane used in revers	Bruce 2024-12-1	016	Bruce 2024-12-1 08:30
In this process, PLA is derived from lactic acid existing in two stereochemical con?gurations (i.e., L or D lactic acid), which is catalytically converted under low pressure into LL-lactide, meso or LDlactide, and DD-lactide, and then it is ring open poly	Bruce 2024-12-1	021	Bruce 2024-12-1 08:30
Ring open polymerization process is the technology producing the most amount POLY(LACTIC ACID) of PLA in the market.	Bruce 2024-12-1	015	Bruce 2024-12-1 08:30
PLA is mainly produced by three synthesis processes:(a) polymerization through lactide formation, (b) directcondensation polymerization, and (c) azeotropic dehydration condensation	Bruce 2024-12-1	016	Bruce 2024-12-1 08:30
So, a PLA polymer��s label as poly (96% Llactic acid) will be composed of 96% L-lactic acid and 4% D lactic acid.	Bruce 2024-12-1	012	Bruce 2024-12-1 08:29
D lactic acid mainly comes from the racemic lactic acid (LD con?guration).	Bruce 2024-12-1	016	Bruce 2024-12-1 08:29
According to its molecular composition, PLA can be named as poly (XY lactic acid), in which X and/or Y are the amount of L and D lactic acid, respectively.	Bruce 2024-12-1	019	Bruce 2024-12-1 08:29
LA can exist in two main optical con?gurations: L or D.	Bruce 2024-12-1	019	Bruce 2024-12-1 08:29
The main constitutional unit of PLA is lactic acid.	Bruce 2024-12-1	015	Bruce 2024-12-1 08:28
More pilot scale plants to produce PLA have been announced in China, and currently, PURAC has expanded its lactic acid capacity targeting the increase of PLA demand	Bruce 2024-12-1	012	Bruce 2024-12-1 08:28
Additional development of stereo complex PLA by PURAC, Musashino Chemical Laboratory, and Teijin has gained attention for the production of a 50/50 blend of poly(Llactic acid) PLLA and poly (Dlacticacid) PDLA with a high melting point targeting ?ber appli	Bruce 2024-12-1	0117	Bruce 2024-12-1 08:28
PURAC and Sulzer have also announced joint efforts to produce PLA from solid lactide to obtain expanded PLA beads to target the market of expanded polystyrene (PS)	Bruce 2024-12-1	016	Bruce 2024-12-1 08:28

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