A novel -nucleating agent for isotactic polypropylene

作者：Pan, Chunmeng; Qin, Wei; Chen, Lan; Xin, Zhong; Zhao, Shicheng^*; Ye, Chunlin

来源：Journal of Thermal Analysis and Calorimetry, 2018, 134(3): 2029-2040.

DOI：10.1007/s10973-018-7768-8

• Isotactic polypropylene
• Nucleating agent
• OBCHED
• Crystallization
• Mechanical properties

A series of metal salts of 7-oxabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid were synthesized, and their nucleation efficiency in isotactic polypropylene (iPP) was investigated. The results showed that potassium 7-oxabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate (OBCHE19) is an effective -nucleating agent. Then, the effect of OBCHE19 concentration on the relative content of -crystals (K) and mechanical properties of iPP was investigated. The results indicated that the maximum K reached 0.82 and impact strength increased by 125% compared to that of pure iPP when the content of OBCHE19 is 0.1mass%. Furthermore, the non-isothermal crystallization kinetics and crystallization activation energy were investigated by the Caze method and Kissinger method, respectively.

• 出版日期2018-12
• 单位华东理工大学