Title Page
Contents
ABSTRACT 7
요약 8
1. Introduction 9
2. Experimental Section 13
2.1. Materials. 13
2.2. Synthesis of thiolated lignosulfonate (TLS). 14
2.3. Methacrylate incorporation in porcine gelatin and fish skin gelatin (pGelMA and fGelMA). 15
2.4. Modification of gelatin methacrylate with dopamine (pGelMA-DOPA and fGelMA-DOPA). 16
2.5. Acrylamide hydrogel fabrication with various crosslinkers and modified natural polymer additives. 17
2.6. Characterization. 18
2.7. Swelling ratio measurement of the PNIPAm hydrogel. 19
2.8. Bending behavior of the PNIPAm hydrogel. 20
3. Results and Discussion 21
3.1. Chemical modification of various natural polymers. 22
3.2. Chemical modification of various natural polymers. 27
3.3. Effect of a variation of crosslinker structure to mechanical property. 28
3.4. Effect of a variation of crosslinker structure to mechanical property. 33
3.5. Incorporation of lignin crosslinker with multiple thiol groups into acrylamide hydrogels. 36
3.6. Temperature responsive behaviors of fabricated hydrogels. 38
4. Conclusions 42
5. Reference 43
6. Supporting Information 49