BP10966 OH-PLLA-COOR, Low Molecular Weight Grades, IV ≤ 1 dl/g, Mw ≤ 90 kDa

Catalogue Number	BP10966
Composition	OH-PLLA-COOR
Form	Powder

OH-PLLA-COOR is the low molecular weight grade of our ester-terminated poly(L-lactic acid) series. With an intrinsic viscosity ≤ 1 dl/g and molecular weight ≤ 90 kDa, this product features a hydroxyl group at one end and an ester group at the other. Stanford Advanced Materials (SAM) employs precise polymerisation control and rigorous GPC, DSC, and viscometry analysis to ensure consistent molecular weight distribution and end-group functionality in every batch.

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What is the core advantage of this low molecular weight, hydroxyl/ester-terminated PLLA compared to other PLLA variants?

Its defined low molecular weight (≤ 90 kDa) results in manageable solution viscosity and tunable degradation rates. The structure featuring a hydroxyl group at one end and an ester group at the other makes it a versatile building block for chemical modification, copolymer synthesis, and as an additive in material formulations.

What types of applications is this material suitable for?

Due to its well-defined molecular structure and end-group characteristics, it is suitable as a macro-initiator or precursor for synthesising block copolymers. It can also serve as a reactive modifier or degradable component in material systems requiring controlled properties, such as speciality coatings, composites, and functional matrices.

How does its molecular weight affect its behaviour in applications?

The molecular weight directly influences the polymer's viscosity, mechanical properties in the solid state, and degradation profile. Our available sub-grades allow users to select the optimal molecular weight to achieve desired solubility, processing behaviour, and degradation kinetics for their specific application.

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Specification	Details
Product Name	OH-PLLA-COOR (Low 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: ≤ 15 kDa; 15–30 kDa; 30–55 kDa; 55–90 kDa
Intrinsic Viscosity (IV)	Corresponding sub-grades: ≤ 0.3 dl/g; 0.3–0.5 dl/g; 0.5–0.7 dl/g; 0.7–1.0 dl/g
Loss on Drying	≤ 0.5 %
Residue on Ignition	≤ 0.5 %
Total Heavy Metals	≤ 10 ppm
Catalyst Residue	≤ 200 ppm
Monomer Residue	≤ 1 %

BP10966 OH-PLLA-COOR, Low Molecular Weight Grades, IV ≤ 1 dl/g, Mw ≤ 90 kDa

OH-PLLA-COOR, Low Molecular Weight Grades, IV ≤ 1 dl/g, Mw ≤ 90 kDa Description

OH-PLLA-COOR, Low Molecular Weight Grades, IV ≤ 1 dl/g, Mw ≤ 90 kDa Applications

OH-PLLA-COOR, Low Molecular Weight Grades, IV ≤ 1 dl/g, Mw ≤ 90 kDa Packing

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FAQ

What is the core advantage of this low molecular weight, hydroxyl/ester-terminated PLLA compared to other PLLA variants?

What types of applications is this material suitable for?

How does its molecular weight affect its behaviour in applications?

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