Biodegradable Polymers

JenKem Technology offers high quality biodegradable polymers. The interest in biodegradable polymers for the medical and pharmaceutical field stems from the need for extended release drug delivery systems, including for ADCs; and for degradable medical devices that do not require human intervention for removal from the body. JenKem PEG ProductsJenKem® PEGs are ideal candidates as a polymeric backbone, as they have already been successfully applied for wound sealing and healing, controlled drug delivery, and tissue engineering

Synthetic JenKem PEG co-polymers and PEG derivatives offer several advantages over natural biodegradable polymers:

  • Highly hydrophilic
  • Facile introduction of functional groups for drug attachment
  • Production of JenKem PEGs back-integrated to ethylene oxide raw material
  • Predictable lot-to-lot consistency and raw material sourcing
  • No immunogenicity normally associated with natural polymers 

Please see below a selection of JenKem® biodegradable PEG copolymers for time release applications, with oligopeptides polyglutamic acid and PLL (PolyL-lysine) [4-15];  PLA (polylactic acid) [1-2]; and PCL (polycaprolactone). Different copolymers, such as PGA (PolyGlycolide), or PLGA (Poly(lactic-co-glycolic acid) PEGs [3], may be available by custom synthesis – please contact us for details.

For information on degradable cleavable JenKem® PEG linkers for controlled release drug delivery, please click here.

For global distribution, please visit link. To order directly from JenKem Technology:

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Poly(Glutamic acid) PEGs
M-PEG-GLU2 ≥95% M-PEG-GLU2 Methoxy PEG Di-Glutamic Acid (mPEG-PGA)
M-PEG-GLU3 ≥90% M-PEG-GLU3 Methoxy PEG Tri-Glutamic Acid (mPEG-PGA)
Poly(L-lysine) Linear PEGs (Methoxy PEG PLL)
PEG PRODUCT Main peak fraction (wt%) ITEM DESCRIPTION
PLL20K-G35-PEG2K ≥90% PLL20K-G35-PEG2K, PEG-Poly(L-lysine), Poly(L-lysine), Graft Ratio 3.5, PLL MW 20000, PEG MW 2000
PolyLactide Multiarm PEGs (4arm PEG PLA)
4ARM-PEG2500-b-PLA2500 ≥95% 4ARM-PEG2500-b-PLA2500, 4arm Polyethylene Glycol Polylactide Block Copolymer, PEG MW 2500, PLA MW 2500
PolyLactide Linear PEGs (PLA PEGs)
MPEG5000-b-PLA2500 ≥90% MPEG5000-b-PLA2500, Methoxy Polyethylene Glycol Polylactide Block Copolymer, PEG MW 5000, PLA MW 2500
MPEG5000-b-PLA5000 ≥90% MPEG5000-b-PLA5000, Methoxy Polyethylene Glycol Polylactide Block Copolymer, PEG MW 5000, PLA MW 5000
PolyLactide Linear PEG Derivatives (PLA PEG Derivatives)
MAL-PEG5000-b-PLA20K ≥90% MAL-PEG5000-b-PLA20K, Maleimide Polyethylene Glycol Polylactide block copolymer, PEG MW 5000, PLA MW 20000, Substitution (Maleimide) ≥ 70%
MAL-PEG2000-b-PLA2000 ≥90% MAL-PEG2000-b-PLA2000, Maleimide Polyethylene Glycol Polylactide block copolymer, PEG MW 2000, PLA MW 2000, Substitution (Maleimide) ≥ 70%
PolyCaprolactone Multiarm PEGs (4arm PCL PEGs)
4ARM-PEG2500-b-PCL2500 ≥95% 4ARM-PEG2500-b-PCL2500, 4arm Polyethylene Glycol Polycaprolactone Block Copolymer, PEG MW 2500, PCL MW 2500
PolyCaprolactone Linear PEGs (Methoxy PEG PCL)
MPEG2000-b-PCL2000 ≥90% MPEG2000-b-PCL2000, Methoxy PEG Polycaprolactone Block Copolymer, PEG MW 2000, PCL MW 2000
Poly(Lactide-co-glycolide) Linear PEGs (Methoxy PEG PLGA)
COOH-PEG5000-b-PLGA5000 >90% COOH-PEG5000-b-PLGA5000, Carboxyl Polyethelyene glycol poly (Lactide-co-glycolide) diblock copolymer, PEG MW 5000, PLGA MW 5000


1. Hao, Y., et al., The evaluation of cellular uptake efficiency and tumor-target ability of MPEG-PDLLA micelles: Effect of particle size. RSC Advances. 2016, 17.

2. Liang, H., et al., Size-Shifting Micelle Nanoclusters Based on a Cross-Linked and pH-Sensitive Framework for Enhanced Tumor Targeting and Deep Penetration Features. ACS applied materials & interfaces. 2016, 8(16):10136-46.

3. Li, Q., et al., Development of reactive oxygen species (ROS)-responsive nanoplatform for targeted oral cancer therapy. Journal of Materials Chemistry B. 2016.

4. Schaedel, L., et al., Microtubules self-repair in response to mechanical stress, Nature Mater., 2015, 14(11):1156-63.

5. Bhajun, R., et al., A statistically inferred microRNA network identifies breast cancer target miR-940 as an actin cytoskeleton regulator, Scientific Reports, 2015, 5, Article number: 8336.

6. Portran, D., et al., Micropatterning Microtubules, Methods in Cell Biology 2014, Matthieu P, Manuel T (Editors) Academic Press, USA, 39-51.

7. Boujemaa-Paterski, R., et al., Directed actin assembly and motility, Methods Enzymol 2014, 540: 283-300.

8. Vignaud, T., et al., Polyacrylamide hydrogel micropatterning, Methods Cell Biol 2014, 120: 93-116.

9. Reymann, A.-C., et al, Nucleation geometry governs ordered actin networks structures, Nature Materials 2010, 9, 827-832.

10. Kiss, A., et al., Nuclear Motility in Glioma Cells Reveals a Cell-Line Dependent Role of Various Cytoskeletal Components, PLoS ONE 2014, 9(4): e93431.

11. Portran, D., et al., Quantification of MAP and molecular motor activities on geometrically controlled microtubule networks, Cytoskeleton, 2013, 70: 12–23. doi: 10.1002/cm.21081.

12. Schiller, H.B., et al., β1-and αv-class integrins cooperate to regulate myosin II during rigidity sensing of fibronectin-based microenvironments, Nature cell biology 2013, 15.6 : 625-636.

13. Galland, R., et al., Fabrication of three-dimensional electrical connections by means of directed actin self-organization, Nature materials 2013, 12.5 : 416-421.

14. Portran, D., et al., MAP65/Ase1 promote microtubule flexibility, Molecular biology of the cell, 2013; 24(12):1964-73.

15. Pitaval, A., et al., Cell shape and contractility regulate ciliogenesis in cell cycle–arrested cells, JCB, 2010, 191 (2):303-312.

Founded in 2001 by recognized experts in PEG synthesis and PEGylation, JenKem Technology specializes exclusively in the development and manufacturing of high quality polyethylene glycol (PEG) products and derivatives, and related custom synthesis and PEGylation services. JenKem Technology is ISO 9001 and ISO 13485 certified, and adheres to ICH Q7A guidelines for GMP manufacture. The production of JenKem® PEGs is back-integrated to on-site manufacturing from ethylene oxide, enabling facile traceability for GMP regulated customers. JenKem Technology caters to the PEGylation needs of the pharmaceutical, biotechnology, medical device and diagnostics, and emerging chemical specialty markets, from laboratory scale through large commercial scale.

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