CAJ | 학술논문

用差示扫描量热仪(DSC),对不同含量的再生丝素蛋白水溶液(质量分数为12%～42%),以及同一含量不同剪切速率(1 000 s~(-1)和2 000 s~(-1))下溶液热性能的变化进行了对比研究.结果表明,随着含量的增大,再生丝素蛋白水溶液发生相转变的温度逐渐降低;同样,经剪切后的溶液发生相转变的温度均向低温漂移,且随着剪切作用的加强,向低温的漂移越明显.试验表明,丝素水溶液含量的增加和剪切作用可加速溶液从无规线团或α-螺旋向β-折叠构象的转变速度,且随着剪切速率的提高,构象转变的速度也加快.
용차시소묘량열의(DSC),대불동함량적재생사소단백수용액(질량분수위12%～42%),이급동일함량불동전절속솔(1 000 s~(-1)화2 000 s~(-1))하용액열성능적변화진행료대비연구.결과표명,수착함량적증대,재생사소단백수용액발생상전변적온도축점강저;동양,경전절후적용액발생상전변적온도균향저온표이,차수착전절작용적가강,향저온적표이월명현.시험표명,사소수용액함량적증가화전절작용가가속용액종무규선단혹α-라선향β-절첩구상적전변속도,차수착전절속솔적제고,구상전변적속도야가쾌.
Effect of different shear rate (1 000 s~(-1) and 2 000 s~(-1)) and different concentration(12%～42%) on the thermal properties of concentrated aqueous solutions of regenerated silk fibroin was studied by differential scanning calorimetry (DSC) . It was found that the conformation of silk fibroin was changed from random coil and α-helix to β-sheet structure by shearing and with increased concentration. And higher shear rate resulted in more conformational transformation.