文章摘要
Comparative Study on Non-isothermal Crystallization Performance of Eucommia Ulmoide gum and Trans -1,4- Polyisoprene
Received:February 11, 2015  Revised:February 11, 2015
DOI：
Key Words: eucommia ulmoide gum; trans-1,4-polyisoprene; non-isothermal crystallization kinetics
Author NameAffiliationE-mail
LIU Qi Shen Yang University of Chemical Technology,Liao Ning Shen Yang 110142 1046194608@163.com 
YANG Feng* Shen Yang University of Chemical Technology,Liao Ning Shen Yang 110142 yf18231@163.com 
FANG Qing-hong Shen Yang University of Chemical Technology,Liao Ning Shen Yang 110142  
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Abstract:
      IR,1H-NMR and GPC was used to characterize the composition and structure difference between eucommia ulmoide gum and synthetic trans-1,4-polyisoprene first. The non-isothermal crystallization behavior of EUG and TPI was studied by means of differential scanning calorimetry and polarizingSopticalSmicroscope POM. The Mo equation was used to analyze the non-isothermal crystallization data of EUG and TPI. The results showed that Mo method could describe the non-isothermal crystallization process of EUG and TPI very well. The values of t1/2 and FT showed that the crystallization rate of EUG and TPI increased with cooling rate increasing, and EUG crystallized faster than TPI. The activation energies of crystallization evaluated by Kissinger method were to be 102.8 kJ/mol and 97.4 kJ/mol separately for EUG and TPI. The different non-isothermalScrystallizingSpropertiesSbetween TPI and EUG come mainly from the different type of impurity, molecular chain end group and molecular weight distribution resulting from the different synthetic mechanism of the EUG and TPI.
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