Effects of the Processing Parameters on the Shear Viscosity of Cyclic Olefin Copolymer Plasticized by Ultrasonic Vibration Energy

Polymers
Jin LuBingyan Jiang

Abstract

Shear viscosity of the cyclic olefin copolymer (COC) plasticized by ultrasonic vibration energy is characterized by high pressure capillary rheometer. Two different plasticization modes were adopted to prepare the samples with an in-house developed prototype machine. Single-factor experiments were conducted to investigate the effects of ultrasonic energy on the shear viscosity. The influences of the processing parameters and the plasticization modes were analyzed and compared. The results showed that the shear viscosity of COC was reduced under various parameter combinations, and demonstrated a significant difference in the lower shear rate range in comparison with the control samples; the results of gel permeation chromatography (GPC) showed that the COC's number average molecular weight ( M ¯ n ) was decreased and the polymer dispersity index (PDI) was increased due to the plasticization by ultrasonic vibration energy. This could be further account for the decrease of the shear viscosity of COC. Moreover, the predominant ultrasonic parameter changed in different modes of plasticization according to the statistical analysis based on the Statistical Product and Service Solutions (SPSS) software.

References

Jun 9, 2009·Ultrasonics Sonochemistry·Jinyao ChenJinder Jow
Aug 13, 2013·Ultrasonics Sonochemistry·Matías SacristánJordi Puiggalí

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Citations

Aug 11, 2021·Polymers·Inés FerrerMaria Luisa Garcia-Romeu

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Methods Mentioned

BETA
chips
rheology

Software Mentioned

CMIM
Statistical Product and Service Solutions ( SPSS
UPMIM
MLRA
TOPAS
SPSS

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