Sonocrystallization of polycarbonate melts
作者： Youngjae Yoo , Changhyun Park , Jong Chan Won , Sung-Goo Lee , Kil-Yeong Choi
DOI: 10.1002/PAT.953
关键词:
摘要: In this paper, we showed the simplified continuous process to crystallize polycarbonate (PC) melts using sonocrystallization which is based on ultrasonic cavitation and ‘hot spot’ theory. High power wave was introduced PC prepolymers generally used for solid-state polymerization (SSP) obtain ultra-high molecular weight PCs. The structure properties of treated with such as torque changes crystallinities were studied. experimental results that could improve PCs sonication time proportional their crystallinity. This attributed decrease specific volume resulting shrinkage compensated by a flux polymer melt toward crystallization front. Torque data collected directly from Haake internal mixer evaluated differential scanning calorimeter (DSC). an environmentally benign so no additional solvents or treatments are needed will be very useful in conventional industrially. Copyright © 2007 John Wiley & Sons, Ltd.
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