Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Preparation of Silk Microfibers and Their Application as Reinforcing Fillers for Alginate Hydrogel

실크 마이크로 섬유의 제조 및 알지네이트 하이드로젤 보강재로의 활용

  • Kim, Ji Hwan (Department of Agriculture, Forestry and Bioresources, Seoul National University) ;
  • Kim, Jung Soo (Department of Agriculture, Forestry and Bioresources, Seoul National University) ;
  • Lee, Ki Hoon (Department of Agriculture, Forestry and Bioresources, Seoul National University)
  • 김지환 (서울대학교 농림생물자원학부) ;
  • 김정수 (서울대학교 농림생물자원학부) ;
  • 이기훈 (서울대학교 농림생물자원학부)
  • Received : 2020.09.08
  • Accepted : 2020.10.18
  • Published : 2020.10.31
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Abstract

Silk microfibers (MSFs) prepared directly from silk fibroin fibers (SFFs) have advantages over those prepared from regenerated silk fibroin. These advantages include a simple process and high crystallinity. This study provides preliminary results on preparing MSFs and their application as reinforcing fillers for hydrogels. Compared to previous methods using only NaOH, we suggest more mild conditions by lowering the concentration of NaOH and adding Na2CO3. In our study, the length of the MSFs was less than 200 ㎛ after 6 h of immersion of SFFs in the NaOH/Na2CO3 solution. X-ray diffraction results revealed that MSFs have a similar crystallinity to that of SFFs. When MSFs were added to the alginate solution, the solution exhibited increased viscosity and shear thinning behavior. The alginate/MSF hydrogel had enhanced compressive properties as compared to the alginate hydrogel, and the reinforcing effect was affected by the length of the MSFs.

Keywords

Acknowledgement

이 연구는 2020년도 산업통상자원부 및 산업기술평가관리원(KEIT) 연구비지원에의한연구임(10062525).

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