【摘要】 本文分别研究了在超声波辐照下羟乙基纤维素(HEC)和聚氧化乙烯(PEO)在水溶液中的降解规律,HEC与PEO在水溶液中的超声波辐照共聚反应。用DTA、IR、MS、X射线衍射和偏光显微镜初步研究了共聚物的结构,证明所得产物主要是嵌段共聚物。将浓度为0.5％的HEC/PEO水溶液在25±1℃,频率为18.2kHz,超声波强度(以逆变器主迴路输入电流表示)为2.5A下辐照10分钟,共聚物产率为55.07％。更多还原

【Abstract】 The ultrasonic degradation of hydroxyethyl cellulose (HEC) and poly(ethylene oxide) (PEO) in aqueous solution, and copolymerization of HEC with PEO were studied respectively. The structure of the copolymer was identified by DTA, IR, MS, X-ray diffraction and polarizing microscope and the copolymer prepared is a block one mainly. The copolymer, formed by irradiating 0.5% HEC/PEO aqueous solution for a period of 10 min. at 25℃ and 18.2 kHz with 2.5 A input current on reversed main circuit, amounts to 55.07%.更多还原