BP10967 OH-PLLA-COOR, Medium Molecular Weight Grades, IV: 1–3 dl/g, Mw: 90–480 kDa

Catalogue Number	BP10967
Composition	OH-PLLA-COOR
Form	Powder

OH-PLLA-COOR is the medium molecular weight grade within our ester-terminated poly(L-lactic acid) series. It possesses an intrinsic viscosity ranging from 1 to 3 dl/g and a molecular weight between 90 and 480 kDa. This product has a hydroxyl group at one end and an ester group at the other. Stanford Advanced Materials (SAM) implements precise polymerisation control coupled with rigorous GPC, DSC, and viscometric analysis to ensure consistent molecular weight distribution and end-group functionality across all batches, establishing it as a reliable base material for demanding applications.

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FAQ

What is the core advantage of this medium molecular weight, hydroxyl/ester-terminated PLLA compared to higher or lower Mw variants?

Its intermediate molecular weight (90–480 kDa) delivers a balanced profile of mechanical strength, manageable solution or melt viscosity, and a moderate, predictable degradation rate. This makes it an ideal candidate for applications requiring sustained functionality over a medium-term period, effectively bridging the gap between rapid-degrading low Mw polymers and long-lasting high Mw variants.

How does the intrinsic viscosity range impact the polymer's processing and final properties?

The intrinsic viscosity (1–3 dl/g) correlates directly with polymer chain length, influencing both processing behaviour (e.g., flow characteristics) and the final material's mechanical properties and degradation kinetics. Selecting the appropriate IV sub-grade allows for the tailoring of material performance to meet specific processing methods and end-use requirements.

What types of applications is this material best suited for?

Due to its adjustable mechanical properties and controlled degradation profile, it is well-suited as a structural component or functional matrix in advanced material formulations. It serves effectively in the development of specialised coatings and composites, and as a base resin for systems where a balance of strength and controlled resorption is essential.

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Specification	Details
Product Name	OH-PLLA-COOR (Medium Mw Grade)
Appearance	White to off-white powder
Glass Transition Temperature (Tg)	60–65 °C
Melting Point	170–180 °C
Molecular Weight (Mw)	Available in precise sub-grades: 90–170 kDa; 170–260 kDa; 260–360 kDa; 360–480 kDa
Intrinsic Viscosity (IV)	Corresponding sub-grades: 1.0–1.5 dl/g; 1.5–2.0 dl/g; 2.0–2.5 dl/g; 2.5–3.0 dl/g
Loss on Drying	≤ 0.5 %
Residue on Ignition	≤ 0.5 %
Total Heavy Metals	≤ 10 ppm
Catalyst Residue	≤ 200 ppm
Monomer Residue	≤ 1 %

BP10967 OH-PLLA-COOR, Medium Molecular Weight Grades, IV: 1–3 dl/g, Mw: 90–480 kDa

OH-PLLA-COOR, Medium Molecular Weight Grades, IV: 1–3 dl/g, Mw: 90–480 kDa Description

OH-PLLA-COOR, Medium Molecular Weight Grades, IV: 1–3 dl/g, Mw: 90–480 kDa Applications

OH-PLLA-COOR, Medium Molecular Weight Grades, IV: 1–3 dl/g, Mw: 90–480 kDa Packing

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FAQ

What is the core advantage of this medium molecular weight, hydroxyl/ester-terminated PLLA compared to higher or lower Mw variants?

How does the intrinsic viscosity range impact the polymer's processing and final properties?

What types of applications is this material best suited for?

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