A novel approach in preparing polymer/nano-CaCO_(3) composites  

作　　者：Zhengying LIU Runze YU Mingbo YANG Jianmin FENG Wei YANG Bo YIN 

机构地区：[1]College of Polymer Science and Engineering,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,China

出　　处：《Frontiers of Chemical Science and Engineering》2008年第1期115-122,共8页化学科学与工程前沿（英文版）

基　　金：The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China(Grant No.10590351);Sichuan University Youth Science Foundation(Grant No.06007).

摘　　要：An novel compounding process using nano-CaCO_(3) aqueous suspension for preparing polymer/nano-CaCO_(3) composites with nanoparticles dispersed at the nanoscale is reported.The process is called the mild mixing method.In this method,the pre-dispersed nano-particle suspensions are blended with melting polymers in a weak shearing field using an extruder,followed by removing the water from the vent.The four typical poly-meric nanocomposites were prepared by mild mixing method.The dispersion of nano-CaCO_(3) in the matrix of the polymer at the nanoscale was confirmed by scanning electron microscopy(SEM).The molecular weights of polycarbonate(PC)and its nanocomposite showed that the degradation had not occurred during the mild mixing processing.The mechanical properties of the composite with 1.5 wt-% nano-CaCO_(3) improve slightly.It proved that this approach is suitable for the preparation of nano-composites based on both polar and non-polar polymers.

关 键 词：nanoparticles mild mixing polar and non-polar polymer dispersion 

分 类 号：TB3[一般工业技术—材料科学与工程]