Enhance the thermal stability of PMMA by predecomposing its defect structures in a continuous polymerization process

Chunlei Cao Chunlei Cao,Zijian Zhang Zijian Zhang,Zhenguo Liu Zhenguo Liu,Huixuan Zhang Huixuan Zhang,Xiumei Zhang Xiumei Zhang

doi:10.1109/icmt.2011.6002521

Enhance the thermal stability of PMMA by predecomposing its defect structures in a continuous polymerization process

Chunlei Cao Chunlei Cao, Zijian Zhang Zijian Zhang + Show 3 more

https://doi.org/10.1109/icmt.2011.6002521

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Publication Date: Jul 1, 2011

Affiliation: Chinese Academy of Sciences, Changchun University of Technology, Changchun Institute of Applied Chemistry, Jilin University

#Unsaturated Ends #Continuous Polymerization + Show 8 more

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Abstract

This paper presents a novel idea that PMMA with high thermal stability may be produced by predecomposing way to remove the chains with head-to head linkages or unsaturated ends during a high temperature continuous polymerization, and, which tested by a pilot continuous polymerization equipment and thermogravimeter (TGA). The result shows that the idea is feasible and efficient, when the reaction and devolatilization steps were carried out at 155 and 300 °C, the chains with the head-to-head linkages or unsaturated ends in free radically polymerized PMMA can be removed completely. The obtained PMMA has an onset temperature of thermal degradation higher than 310

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