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半结晶聚合物双重熔化行为研究历史经过拉伸取向、退火、或沉淀的半结晶聚合物常常在具差热分析(DTA)、差示扫描量热(DSC)曲线上出现双重熔化峰。从五十年代以来不断出现有关双重熔化峰产生原因的研究报导。1955年White在拉伸取向的尼龙66、尼龙6、尼龙11、聚胺酯的DTA曲线上,首次观察到双重熔化峰,他将低温峰归因于取向晶体的解取向吸热,将高温峰归因于晶区的熔化。Bell在早期研究拉伸的退火的尼龙66、聚对苯二甲酸乙二酯(PET)
Studies on Double Melting Behavior of Semi-Crystalline Polymers History Semi-crystalline polymers that have been stretched, annealed, or precipitated often show double melting peaks on differential thermal analysis (DTA) and differential scanning calorimetry (DSC) curves. Research reports on the causes of double melting peaks have been reported continuously since the 1950s. White first observed a double melting peak on the DTA curves of nylon-6, nylon-6, nylon-11, and polyurethane in tensile orientation in 1955. He attributed the low temperature peak to the endotherm of the orientation crystal, and attributed the high temperature peak to Melting in the crystal zone. Bell in the early study of the tensile annealed nylon 66, polyethylene terephthalate (PET)