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Sigma-Aldrich

Poly(L-lactide)

average Mn 20,000, PDI ≤1.1

Synonym(s):

PLA, PLLA, Polylactide, L-Lactide polymer, PLA, Poly(L-Lactic acid)

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About This Item

Linear Formula:
H(C3H4O2)nOCH3
UNSPSC Code:
12162002
NACRES:
NA.23

form

solid

optical activity

[α]22/D -153°, c = 0.5% in chloroform

mol wt

average Mn 20,000

degradation timeframe

>3 years

transition temp

Tm 167-172 °C

PDI

≤1.1

storage temp.

2-8°C

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General description

Poly (L-lactide) is a semi-crystalline polymer which exhibits strong optical rotation and good mechanical properties. It is mostly used in the synthesis of degradable polymers which are used in orthopaedic devices, in dental applications, as scaffolds for autografted new skin, wound covers, anastomose systems and stents. They are biodegradable since the polyester backbone degrades by simple hydrolysis to form non-toxic compounds.

Application

Used in Drug Delivery including coating nanoparticles. Can be end-group functionalizated or used as a macroinitiator/block precursor.

Features and Benefits

High initial strength, good strength retention and high amount of crystallinity as much as 70% which in turn is responsible for the very slow degradation rate.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Effect of poly (ethylene glycol)-block- poly (L-lactide) on the poly [(R)-3-hydroxybutyrate]/poly (L-lactide) blends
Yoon, J. S., Lee, W. S., Kim, K. S., Chin, I. J., Kim, M. N., & Kim, C.
Eur. Polymer J., 36(2), 435-442 (2000)
Chemical synthesis of polylactide and its copolymers for medical applications
Bendix, D.
Polymer Degradation and Stability, 59(1), 129-135 (1998)
Synthesis and thermal properties of novel star-shaped poly (l-lactide)s with starburst PAMAM-OH dendrimer macroinitiator.
Zhao, Y. L., Cai, Q., Jiang, J., Shuai, X. T., Bei, J. Z., Chen, C. F., & Xi, F.
Polymer, 43(22), 5819-5825 (2002)
Wolf, Florian F.; et al.
Macromolecules, 42, 5622-5628 (2009)
Zhang, Wen-Bin; et al.
Macromolecules, 44, 2589-2596 (2011)
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