3D Printable Biodegradable Polymer Composite for Tissue Engineering
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Solution Overview
Problem
Conventional biomaterials for soft tissues face issues with uncontrollable mechanical properties and unpredictable biodegradability, limiting their effectiveness in medical and bio-engineering applications.
Innovation Solution
A 3D printable biodegradable polymer composite is developed, comprising poly(glycerol sebacate acrylate), a photo-initiator, and either polycaprolactone-diacrylate or polyethyleneglycol-diacrylate, with adjustable blending ratios and acrylation degrees to control elasticity, mechanical properties, and degradability, suitable for curing under UV or visible light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional biomaterials are used for soft tissue replacement, then basic biocompatibility is achieved, but mechanical properties and biodegradability are uncontrollable and unpredictable
Solution Approach 1:
The patent applies parameter changes by systematically varying the acrylation degree of PGS (5-60%) and the blending ratios of PCL-DA and PEG-DA to precisely control the mechanical properties, elasticity, and biodegradability of the composite material, transforming fixed properties into adjustable parameters
Solution Approach 2:
The patent uses composite materials by combining PGS, PCL-DA, and PEG-DA in specific ratios to achieve synergistic effects that provide both structural integrity and controllable biodegradability, resolving the contradiction between reliability and adaptability
2Productivity
If rapid curing is required for 3D printing applications, then productivity is improved, but control over mechanical properties may be compromised
Solution Approach 1:
The patent replaces traditional thermal or mechanical curing methods with photo-initiated polymerization using UV or visible light, enabling rapid curing while maintaining precise control over mechanical properties through the photo-initiator system and composition design
Solution Approach 2:
The patent utilizes parameter changes by adjusting the photo-initiator concentration and light exposure conditions to optimize both curing speed and final mechanical properties, achieving rapid tooling without sacrificing property control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composite allows for customizable production of human tissue or organ substitutes with tailored mechanical and degradability properties, enhancing bio-compatibility and suitability for bio-engineering applications by adjusting the blending ratios and acrylation degrees of the components.
Implementation Method 1
The present invention is able to be cured under UV or visible light which is suitable for rapid tooling like 3D printing
Data Source
AI summary
A printable biodegradable polymer composite includes PGSA, a biodegradable photo-initiator and material selected from the group consisting PCL-DA and PEG-DA uniformly blended together. By adjusting the blending ratio, the elasticity, mechanical properties and degradation patterns may be adjusted for producing a tissue, organ or related bio-product by 3D-printing.