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Poly(lactide-co-caprolactone)-block-poly(ethylene glycol)-block-poly(lactide-co-caprolactone)

average Mn 5700-4600-5700

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feed ratio

lactide 50:50

mol wt

PEG average Mn 5,000 (DCM, PEO)
PLCL average Mn 5,700
average Mn (1,000-10,000-1,000)

degradation timeframe

1-2 months

transition temp

Tm 34-41 °C


<1.3 (typical PEG; overall PDI <1.8 (THF, PEO))

storage temp.


Related Categories

General description

It belongs to the family of synthetic biodegradable polymers. It exihibits excellent tissue compatibility. PLCL-PEG-PLCL polymers are studies extensively for its drug delivery capability (both hydrophobic and hydrophilic drugs).


1. Drug delivery
2. Ligament-bone interface mimicking

Storage Class Code

11 - Combustible Solids



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Biodegradable polyester based nanoparticle formation
Material Matters, 7(3) (2012)
Bret D Ulery et al.
Journal of polymer science. Part B, Polymer physics, 49(12), 832-864 (2011-07-20)
Utilization of polymers as biomaterials has greatly impacted the advancement of modern medicine. Specifically, polymeric biomaterials that are biodegradable provide the significant advantage of being able to be broken down and removed after they have served their function. Applications are


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Local delivery of bioactive molecules using an implantable device can decrease the amount of drug dose required as well as non-target site toxicities compared to oral or systemic drug administration.

Biodegradable Polyester Based Nanoparticle Formation by Miniemulsion Technique

Aliphatic polyesters such as polylactide, poly(lactide-co-glycolide) and polycaprolactone, as well as their copolymers, represent a diverse family of synthetic biodegradable polymers that have been widely explored for medical uses and are commercially available.

Poly(Amino Acid) Block Copolymers for Drug Delivery and other Biomedical Applications

Humankind has utilized protein materials throughout its existence, starting with the use of materials such as wool and silk for warmth and protection from the elements and continuing with the use of recombinant DNA techniques to synthesize proteins with unique and useful properties.

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