典型文献
Diffusion Characteristics and Removal of Cyclohexane in Polyolefin Elastomer Melt
文献摘要：
The diffusion coefficient of volatiles in polymer solutions is a crucial parameter to describe the mass transfer efficiency and ability of volatiles.In this research,polyolefin elastomer(POE)was used as a polymer,and cyclohexane was used as a volatile.A gravimetric analysis was applied to measure the diffusion coefficient of cyclohexane in POE.The devolatilization rate of the POE-cyclohexane system under different conditions was measured.The effects of temperature,film sample thickness,and initial concentration of volatiles on the devolatilization rate were discussed.Based on the devolatilization rate data,the average diffusion coefficient of cyclohexane in POE was obtained by fitting with a mathematical model.The experimental results indicate that the devolatilization rate increased with increasing temperature and initial concentration of volatiles,but it decreased with increasing sample thickness.As the thickness increased,the overall diffusion resistance increased.As the temperature increased,the molecular movement increased,resulting in the increase of average diffusion coefficient.The relationship between the diffusion coefficient of the POE-cyclohexane system and temperature follows the Arrhenius law.The diffusion activation energy E=6201.73 J/mol,and the pre-exponential factor of the diffusion coefficient D0=2.64×10-10m2/s.This work can provide basic data for exploring the devolatilization of POE polymers and serves as a useful reference for enhancing the effect of devolatilization.
文献关键词：
中图分类号：
作者姓名：
Qi Jibing;Yang Tong;Liu Yandong;Yuan Zhiguo;Zhang Qiaoling;Liu Youzhi;Yi Jianjun
作者机构：
Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering,North University of China,Taiyuan 030051,China;Petrochemical Research Institute,PetroChina Co.,Ltd.,Beijing 102206,China
文献出处：
引用格式：
[1]Qi Jibing;Yang Tong;Liu Yandong;Yuan Zhiguo;Zhang Qiaoling;Liu Youzhi;Yi Jianjun-.Diffusion Characteristics and Removal of Cyclohexane in Polyolefin Elastomer Melt)[J].中国炼油与石油化工（英文版）,2022(04):76-85
A类：
Cyclohexane,polyolefin,devolatilization,10m2
B类：
Diffusion,Characteristics,Removal,Polyolefin,Elastomer,Melt,diffusion,coefficient,volatiles,solutions,crucial,parameter,describe,mass,transfer,efficiency,ability,In,this,research,elastomer,POE,was,used,cyclohexane,gravimetric,analysis,applied,rate,system,under,different,conditions,measured,effects,temperature,film,sample,thickness,initial,concentration,were,discussed,Based,data,average,obtained,by,fitting,mathematical,model,experimental,results,indicate,that,increased,increasing,but,decreased,overall,resistance,molecular,movement,resulting,relationship,between,follows,Arrhenius,law,activation,energy,pre,exponential,D0,This,work,can,provide,basic,exploring,polymers,serves,useful,reference,enhancing
AB值：
0.439171
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