摘要
采用差示扫描量热法研究了原位聚合反应制备的MC尼龙6/纳米ZnO复合材料的非等温结晶行为,并利用修正Avrami方程的Jeziomy法、Mo法和Kissinger法对其动力学过程进行了分析.结果表明:由于纳米ZnO起到成核剂的作用,使晶核的生成变快,提高了MC尼龙6的结晶温度和成核速率;同时纳米ZnO粒子和MC尼龙6分子链之间存在相互作用力,阻碍了MC尼龙6分子链在结晶过程中的运动,导致结晶活化能提高,晶体生长速度下降,结晶度降低.
The nonisothermal crystallization behavior of the MC nylon 6/ZnO nanocomposite prepared by in situ polymerization was studied by means of differential scanning calorimetry （DSC）, where a kinetic analysis was made by Jeziomy, Mo and Kissinger methods based on modified Avrami equations. The results showed that the nucleus growth of MC nylon 6 is accelerated because the nano-sized ZnO particles are playing the role of nucleating agents to expedite the crystallizing rate and raise the temperature of MC nylon 6. At the same time, the movement, of MC nylon 6 molecule chains is suppressed in crystallization process due to the interaction between nano-sized ZnO particles and MC nylon 6 molecule chains, thus increasing the activation energy of MC nylon 6 crystallization and decreasing the crystal growing rate and crystallinity.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第1期100-104,共5页
Journal of Northeastern University(Natural Science)
基金
国家高技术研究发展计划项目(2005AA001510)
