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(±)-Poly(lactic acid)

(±)-Poly(lactic acid) structure

CAS No:
26100-51-6
Formula:
(C3H6O3)x
Chemical Name:
(±)-Poly(lactic acid)
Synonyms:
Propanoic acid,2-hydroxy-,homopolymer;Lactic acid,polymers;Lactic acid,polyesters;Poly(lactic acid);Lactic acid polymer;Lactic acid homopolymer;(±)-Lactic acid homopolymer;(±)-2-Hydroxypropanoic acid homopolymer;Poly(DL-lactic acid);Poly(dl-lactate);(±)-Poly(lactic acid);DL-Polylactic acid;Poly(dl-lactic acid);DL-Lactic acid polymer;DL-Lactic acid homopolymer;Polylactic acid;NeoOrtho;D,L-polylactic acid;2-Hydroxypropanoic acid homopolymer;Polylactate;Lactates,polylactates;Polylactates;PLA;31587-11-8;947236-64-8;1104201-86-6;1148011-07-7;1384255-85-9
Categories:
Catalyst and Auxiliary > Polymer

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Description

ChEBI: A macromolecule composed of repeating 2-hydroxypropanoyl units.

(±)-Poly(lactic acid) Basic Attributes

Molecular Weight：

90.078

Exact Mass：

90.031693

EC Number：

200-018-0

HScode：

3907700000

Characteristics

PSA：

57.5

XLogP3：

-0.6

Appearance：

black

Density：

1.21 g/cm³

Melting Point：

173 °C

Boiling Point：

122 deg C at 15 mm Hg

Flash Point：

110°C c.c.

Refractive Index：

1.451

Water Solubility：

Solubility in water: miscible

Storage Conditions：

2-8°C

Vapor Pressure：

0.0813 mm Hg at 25 deg C

Safety Information

Transport codes：

NONH for all modes of transport

wgk germany：

hazard class code：

safety instructions：

22-24/25-26

RTECS Number：

OD2800000

Marks：

Storage features：

Separated from strong bases.

Stability/Shelf Life：

Stable under recommended storage conditions.

Precautionary statement(s)：

P264, P280, P302+P352, P305+P351+P338, P310, P321, P332+P313, P362

Hazard Statements：

H315

(±)-Poly(lactic acid) Use and Manufacturing

polylactic acid (PLA) is a lactic acid polymer that can be used as a filler. Polylactic acid(PLA) was introduced in 1966 for degradable surgical implants. Hydrolysis yields lactic acid, a normal intermediate of carbohydrate metabolism. Polyglycolic acid sutures have a predictable degradation rate which coincides with the healing sequence of natural tissues.
Polylactic acid, also known as polylactide, is prepared from the cyclic diester of lactic acid (lactide) by ring-opening addition polymerization. Pure DL-lactide displays greater bioresorbability, whereas pure poly-Llactide is more hydrolytically resistant.
The actual time required for poly-L-lactide implants to be completely absorbed is relatively long, and depends on polymer purity, processing conditions, implant site, and physical dimensions of the implant.

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