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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Increased Strength of 3DP Structures with Polysaccharides

2015년 9월 3일 16시 54분 49초
MAT.P-483 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 16일 (금요일) 13:00~14:30
저자 및
정연재, 이해신*
한국과학기술원(KAIST) 화학과, Korea
For the 3D printing industry, powder bed and inkjet 3d printing, known as 3D printing (3DP), brings a new level of considerable material flexibility to the manufacturing industry. Especially, binders are considered to be significant factors due to their transparency, adhesiveness, and reliability. However, the problems of using commercial binders is the post processing, but most of the cover adhesives are toxic and can induce eye and respiratory irritation. One of the solutions to not go through with post-treatment process is to combine powders and binders with stronger and biocompatible adhesives. One of which is derived from polysaccharides. Here, we propose a new 3DP systems for manufacturing the powder based structures. The powder, which is generally used, is composed of calcium sulfate hemihydrate which can be transformed to a ‘needle-shape’ when it adsorbs water based binder. It helps the powder to undergo physical crosslinking and the binders help to make more solid structures. By binding the powder with polysaccharides solution and stacking layer by layer, we demonstrate the sturdy structures are made. Solidification undergo at molecular level with powder and polysaccharide based binder solution. Chemically, calcium of the powder mediated coordination crosslinking gives strong mechanical property. The study suggests that biocompatible adhesives enhance mechanical properties of powder based 3DP structures by chelation.