Structure-Property Relationships of 3D-Printable Chain-Extended Block Copolymers with Tunable Elasticity and Biodegradability
- Authors
- Kim, Ryung Il; Lee, Geonchang; Lee, Jung-Hyun; Park, Ji Jong; Lee, Albert S.; Hwang, Seung Sang
- Issue Date
- 9-9월-2021
- Publisher
- AMER CHEMICAL SOC
- Keywords
- 3D printing; biodegradable polymers; bioelastomer; block copolymer; polyurethane
- Citation
- ACS APPLIED POLYMER MATERIALS, v.3, no.9, pp.4708 - 4716
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED POLYMER MATERIALS
- Volume
- 3
- Number
- 9
- Start Page
- 4708
- End Page
- 4716
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/136373
- DOI
- 10.1021/acsapm.1c00860
- ISSN
- 2637-6105
- Abstract
- Elastomeric bioscaffolds with tunable elasticity and biodegradability were synthesized via ring opening polymerization of polycaprolactone (PCL) and polylactide (PLA) with a bifunctional polyethylene glycol macroinitiator, followed by chain extension with diisocyanate to form urethane linkages. Through fine tuning of the macroinitiator and PCL/PLA weight fraction and molecular weight, a data set of elastomeric bioscaffolds gives structure-property insights into their thermal, mechanical, and biodegradability properties as they relate to triblock copolymer composition and mechanical weight. These materials were targeted to be 3D-printed by commercial devices, and their unique rheological properties enable impeccable multiscale microstructure formation. Simplicity in synthesis and fabrication as well as tunable biodegradability (1 day to 2 months) and elasticity (modulus 32-94 MPa) suggest the vast wide-ranging utility and prospective application in bioscaffolds for future therapeutic treatments.
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