Structural, Thermal, and Mechanical Properties of Polyurethane Foams Prepared with Starch as the Main Component of Polyols

Kim, Dae-Hyun; Kwon, Oh-Jin; Yang, Seong-Ryul; Park, Jong-Shin; Chun, Byoung-Chul

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자료유형: 학술저널

저자정보: Kim, Dae-Hyun (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Intelligent Textile System Research Center) Kwon, Oh-Jin (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Intelligent Textile System Research Center) Yang, Seong-Ryul (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Intelligent Textile System Research Center) Park, Jong-Shin (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Intelligent Textile System Research Center) Chun, Byoung-Chul (Department of Polymer Engineering, The University of Suwon)

저널정보: 한국섬유공학회 Fibers and Polymers Fibers and polymers 제8권 제2호

발행연도: 2007.1

수록면: 155 - 162 (8page)

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In this study, rigid polyurethane foams were prepared using starch as the main component of polyols and their structural, thermal, and mechanical properties were investigated. The starch content in polyols was $30{\sim}50\;wt.%$. The prepared polyurethane foams had a cell structure. When the starch content and -NCO/-OH molar ratio (TS4-05, TS3-07, and TS3-05) was low, polyurethane foams were not formed. To confirm the formation of a urethane linkage between -OH of the starch and -NCO of the 2,4-TDI, FT-IR spectroscopic analysis was performed. The thermal properties of polyurethane foams were analyzed by DSC and TGA. DSC thermograms showed two endothermic peaks: a sharp peak at a lower temperature and a broad peak at a higher temperature. Both peaks were shifted to higher temperature with starch content in polyols and NCO/-OH molar ratio. Thermal degradation of polyurethane foams began at a lower temperature and ended at a higher temperature than that of starch. The impact resistance, compressive stress and modulus of polyurethane foams increased with NCO/-OH molar ratio and starch content.

#Polyurethane foam #Starch #Mechanical property #Density #TGA

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Kim, Dae-Hyun

소속기관 Department of Biosystems and Biomaterials Science and Engineering, Seoul National University, Intell