Effect of molecular weight on the quality of poly(alpha-methylstyrene) mandrel

Xiuyun Shangguan; Sufen Chen; Shuang Ma; Meifang Liu; Changhuan Tang; Yong Yi; Zhanwen Zhang

doi:doi:10.1016/j.mre.2017.04.001

Matter and Radiation at Extremes, 2017, 2 (4): 197, Published Online: Jan. 17, 2018

Effect of molecular weight on the quality of poly(alpha-methylstyrene) mandrel

论文大纲

Xiuyun Shangguan ^1,2Sufen Chen ²Shuang Ma ¹Meifang Liu ²Changhuan Tang ²Yong Yi ¹Zhanwen Zhang ^2,*

Author Affiliations

¹ School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China

² Research Center of Laser Fusion, CAEP, P. O. Box 919-987, Mianyang, 621900, China

Abstract

Hollow poly(alpha-methylstyrene) (PAMS) shows application in inertial confinement fusion experiments as the degradable mandrels of glow plasma polymer shells. However, the molecular weight of PAMS has great influence on the quality of mandrels. In this work, this influence was systematically studied using several PAMS samples with different molecular weights. For PAMS shells with 900 μm inner diameter and different wall thickness, when the molecular weight of PAMS is in the range of 300-500 kg·mol^-1, perfect sphericity and good wall thickness uniformity can be obtained. In contrast, when increasing molecular weight to 800 kg·mol ^-1, the sphericity and the wall thickness uniformity become worse. Moreover, compared with the wall uniformity, the sphericity of PAMS shells was much less sensitive to the molecular weight. The results also showed that the stability of W1/O compound droplets of PAMS shells were less affected by the molecular weight. It was revealed that the wall uniformity and the sphericity of the PAMS shells were associated with the diffusion rates of fluorobenzene (FB).

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Xiuyun Shangguan, Sufen Chen, Shuang Ma, Meifang Liu, Changhuan Tang, Yong Yi, Zhanwen Zhang. Effect of molecular weight on the quality of poly(alpha-methylstyrene) mandrel[J]. Matter and Radiation at Extremes, 2017, 2(4): 197.

Effect of molecular weight on the quality of poly(alpha-methylstyrene) mandrel

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