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Advanced Nanobiocomposite Hydrogels Incorporating Organofunctionalized LDH for Soft Tissue Engineering Applications.
Ionut-Cristian Radu1, Eugenia Tanasa2,3, Sorina Dinescu4,5
1Advanced Polymer Materials Group, Faculty of Chemical Engineering and Biotechnology, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania.
Researchers developed flexible nanocomposite hydrogels for soft tissue engineering using modified clay crosslinkers. These durable poly(2-hydroxyethyl methacrylate)-co-(2-acrylamido-2-methylpropane sulfonic acid) (HEMA/AMPSA) hydrogels show promise for biomedical applications.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Tissue Engineering
Background:
- Growing demand for flexible, durable soft polymer materials in biomedical applications.
- Nanocomposite hydrogels offer potential for soft tissue engineering.
- Need for optimized synthesis of advanced hydrogel materials.
Purpose of the Study:
- To investigate and optimize the development of novel nanocomposite hydrogels.
- To create flexible hydrogels based on poly(2-hydroxyethyl methacrylate)-co-(2-acrylamido-2-methylpropane sulfonic acid) (HEMA/AMPSA) copolymers.
- To evaluate the potential of these hydrogels for soft tissue applications.
Main Methods:
- Synthesis of modified layered double hydroxide (LDH) clay crosslinker (LDH-ATPM) via a two-step procedure.
- Grafting-through polymerization of HEMA/AMPSA copolymers using the modified clay.
- Optimization of hydrogel composition for enhanced flexibility.
- Characterization using mechanical tests (tensile, compressive), microscopy (TEM, SEM, micro-CT), swelling studies, TGA, FTIR-ATR, and XRD.
- Biological assessment using human adipose-derived stem cells (hASCs).
Main Results:
- Successfully synthesized and optimized novel HEMA/AMPSA nanocomposite hydrogels.
- Achieved soft hydrogels with high flexibility and durability.
- Characterized mechanical, morphological, swelling, and diffusion properties.
- Demonstrated good biocompatibility of the hydrogels with hASCs.
- Modified LDH-ATPM showed specific characteristics confirmed by TGA, FTIR-ATR, and XRD.
Conclusions:
- The developed nanocomposite hydrogels exhibit promising properties for soft tissue engineering.
- The novel synthesis procedure and modified clay crosslinker are effective.
- The materials show potential for advanced biomedical applications requiring flexible and biocompatible hydrogels.
