Straus Sidney, Madorsky Samuel L
J Res Natl Bur Stand A Phys Chem. 1961 May-Jun;65A(3):243-248. doi: 10.6028/jres.065A.029. Epub 1961 Jun 1.
Samples of polydivinylbenzene (PDVB) and of copolymers of styrene with divinylbenzene (DVB) and with trivinylbenzene (TVB) were pyrolyzed in a vacuum in the temperature range of 346 to 450 °C. The volatile products were collected in two fractions: A heavy fraction volatile at the temperature of pyrolysis and a light fraction volatile at room temperature. Mass spectrometer analysis of the light fraction showed that for the copolymer containing 2 percent DVB the yield of styrene monomer is somewhat greater than for the pure polystyrene. On pyrolysis, of copolymers containing 25 percent of DVB or of TVB yield reduced amounts of styrene monomer; those containing about 50 percent of DVB do not yield any styrene monomer. Rates of thermal degradation of PDVB and of the copolymers were studied in the temperature range of 330 to 390 °C; the activation energies calculated on the basis of these rates were 53, 54, 58, 58, 61, and 65 kcal/mole for the copolymers containing 2 percent DVB, 25 percent DVB, 48 percent DVB, 56 percent DVB, 25 percent TVB, and for PDVB, respectively.
将聚二乙烯基苯（PDVB）以及苯乙烯与二乙烯基苯（DVB）和三乙烯基苯（TVB）的共聚物样品在346至450°C的温度范围内进行真空热解。挥发性产物收集为两个馏分：热解温度下挥发的重馏分和室温下挥发的轻馏分。对轻馏分的质谱分析表明，对于含2％DVB的共聚物，苯乙烯单体的产率略高于纯聚苯乙烯。在热解含25％DVB或TVB的共聚物时，苯乙烯单体的产率降低；含约50％DVB的共聚物不产生任何苯乙烯单体。在330至390°C的温度范围内研究了PDVB和共聚物的热降解速率；基于这些速率计算的含2％DVB、25％DVB、48％DVB、56％DVB、25％TVB的共聚物以及PDVB的活化能分别为53、54、58、58、61和65千卡/摩尔。
