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Citation: XU Wei-Bing, GE Ming-Liang, HE Ping-Sheng. Nonisothermal Crystallization Kinetics of Polyoxymethylene/Montmorillonite Nanocomposites[J]. Chinese Journal of Applied Chemistry, ;2001, 18(9): 721-725. shu

Nonisothermal Crystallization Kinetics of Polyoxymethylene/Montmorillonite Nanocomposites

1.
a Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei;
2.
b College of Chemical Engineering, Hefei University of Technology, Hefei 230009

Received Date: 26 October 2000
Available Online: 19 March 2001
Fund Project: 安徽省自然科学基金项目(99046317) (99046317)

Polyoxymethylene/organo montmorillonite (POM/Mont) nanocomposites were prepared by melt direct intercalation, and the basal spacing of montmorillonite was detected by X-ray diffractometer(XRD).The nonisothermal crystallization kinetics of polyoxymethylene(POM) and POM/Mont nanocomposite were investigated by differential scanning calorimetry(DSC).The Jeziorny, Ozawa and Liu methods were employed to analyze the DSC data.The results showed that both Jeziorny and Liu methods could describe this system very well.The activation energies evaluated by Cebe method were 334.6 kJ/mol and 196.9 kJ/mol for the nonisothermal crystallization of POM and POM/Mont nanocomposite, respectively.Intercalation of organic montmorillonite into POM decreased its activation energy and half time of crystallization, playing a role as a nucleating agent for nonisothermal crystallization of POM.
- polyoxymethylene,
- montmorillonite,
- nanocomposite,
- nonisothermal crystallization kinetics
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