Selective pyrolysis of polystyrene to that with a desired low polymeric degree

Murakata T.; Sato H.; Hirai T.; Sato S.; Saito M.

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Selective pyrolysis of polystyrene to that with a desired low polymeric degree

机译：聚苯乙烯选择性热解至所需的低聚合度

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To obtain low polymeric polystyrene (PS), pyrolysis of high polymeric PS in solution was studied in the temperature range from 290 to 400 degrees C by using additives or acid catalysts. The low polymeric PS targeted here was that with average molecular weight of 10(4). When the feed PS was pyrolyzed in tetralin by adding sulfur or diphenyl disulfide, the molecular weight of PS decreased greatly, even at lower temperatures, and the desired low polymeric PS was formed in a relatively large amount at the temperatures below 350 degrees C. The degradation behavior was able to be explained in terms of a random polymer chain scission mechanism initiated by sulfur radicals formed from the additives. (C) 1998 John Wiley & Sons, Inc. [References: 20]

机译：为了获得低聚合的聚苯乙烯（PS），使用添加剂或酸催化剂在290至400℃的温度范围内研究了高聚合的PS在溶液中的热解。此处针对的低聚合物PS是平均分子量为10（4）的PS。当进料PS通过添加硫或二苯基二硫化物在四氢化萘中热解时，即使在较低温度下PS的分子量也大大降低，并且在350℃以下的温度下以相对大量形成了所需的低聚合PS。降解行为可以用由添加剂形成的硫自由基引发的无规聚合物断链机理来解释。（C）1998 John Wiley＆Sons，Inc. [参考：20]

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《Journal of Applied Polymer Science》 |1998年第11期|共7页
作者
Murakata T.; Sato H.; Hirai T.; Sato S.; Saito M.;
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正文语种 eng
中图分类高分子化学（高聚物）;高分子化合物产品;有机化学;
关键词
Polystyrene; Pyrolysis in solution; Recovery of low-molecular-weight polymer; Random polymer chain scission; Sulfur radicals; Thermal-degradation; Solvent; Poly(para-methylstyrene); Mechanism; Kinetics;

机译：聚苯乙烯;溶液中的热解;低分子量聚合物的回收;无规聚合物断链;硫自由基;热降解;溶剂;聚对甲基苯乙烯;机理;动力学;

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1. Selective pyrolysis of polystyrene to that with a desired low polymeric degree [J] . Murakata T., Sato H., Hirai T., Journal of Applied Polymer Science . 1998,第11期

机译：聚苯乙烯选择性热解至所需的低聚合度
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6. Exploring the Contribution of Two Phosphorus-Based Groups to Polymer Flammability via Pyrolysis–Combustion Flow Calorimetry [O] . Rodolphe Sonnier, Belkacem Otazaghine, Christelle Vagner, 2019

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机译：通过热解 - 气相色谱/质谱法选择性地定量聚乙烯，聚丙烯和聚苯乙烯塑料碎片的简单方法
8. Pyrolysis-Molecular Weight Chromatography-Vapor-Phase Infrared Spectrophotometry:An On-Line System for Analysis of Polymers. III. Thermal Decomposition of Polysulfones and Polystyrene. [R] . kiran, erdogan gillham,john k. 1976

机译：热解 - 分子量色谱 - 气相红外分光光度法：用于分析聚合物的在线系统。 III。聚砜和聚苯乙烯的热分解。

Selective pyrolysis of polystyrene to that with a desired low polymeric degree

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