CAJ | 학술논문

利用FTIR、XRD、AFM等方法，分析了聚乙烯醇（PVA）膜材料在不同氚气氛下的氚衰变辐照效应，表征了氚衰变β射线对PVA中氢与氚同位素置换的诱导激化作用，明确了PVA中的氚取代主要发生在C-H基团，而醇羟基O-H基团因强烈的氢键作用而未发生氚取代；材料的表面形貌、结晶度等均发生了变化。通过PVA膜拉伸力学性能实验，测定了不同氚衰变辐照下PVA膜材料的拉伸强度和伸长率。结果显示，与其微观结构变化趋势一致。
이용FTIR、XRD、AFM등방법，분석료취을희순（PVA）막재료재불동천기분하적천쇠변복조효응，표정료천쇠변β사선대PVA중경여천동위소치환적유도격화작용，명학료PVA중적천취대주요발생재C-H기단，이순간기O-H기단인강렬적경건작용이미발생천취대；재료적표면형모、결정도등균발생료변화。통과PVA막랍신역학성능실험，측정료불동천쇠변복조하PVA막재료적랍신강도화신장솔。결과현시，여기미관결구변화추세일치。
The radiation effect of poly (vinyl alcohol) films used as a kind of gas-barrier material for inertial confinement fusion (ICF) targets was studied under the different conditions of β-ray from tritium decay .The changes of physical and chemical properties of the irradiated material samples were analyzed by FTIR ,XRD and AFM .The tritium-hydrogen isotopic exchange reaction of the irradiated samples mainly occurs at C - H bond and the IR absorption peak of C-T bond obviously increases with the irradiation dose .For strong hydrogen bonding interaction ,the isotopic exchange reaction doesn’t occur at O-H bond .The crystallinity degree and surface morphology of the irradiated samples were changed .The tensile properties of irradiated poly (vinyl alcohol) films were measured by universal material testing machine .The results show that the change trend of mechanical properties is in accordance with the microstructures of the irradiated samples .