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去年,当我国第一个原子反应堆建成之后,我們利用反应堆的混合射綫(主要是中子及γ射綫),探索性地研究了苯乙烯的輻射聚合效应。下面簡要地叙述一下我們的实驗結果。 (一)沒有任何其他物质存在的情况下,苯乙烯的輻射聚合:在溫度为30°～50℃的范围內,中子量为3.75×10~(15)中子数/厘米~2时,得到的結果是:苯乙烯全部聚合,聚合产物为白色的牛透明状固体。用G.Natta等人确定的測定分子量的[η]—M經驗公式,[η]=1.06×10~(-2)M~(0.74);采用粘度法在30.0℃下測定輻射聚合产物的分子量,其值等于1.34×10~5。由此証明,輻射苯乙烯的产物,是苯乙烯的高聚物。其分子量比一般化学聚合法所得到的聚合物的分子量
Last year, when the first atomic reactor in our country was completed, we explored the radiation polymerization effect of styrene using the mixed rays of the reactor (mainly neutron and gamma rays). The following briefly describes our experimental results. (A) Irradiation polymerization of styrene without any other substance: When the neutron amount is 3.75 × 10 ~ (15) neutrons / cm ~ 2 at a temperature of 30 ° ~50 ℃, The result obtained was that the styrene was completely polymerized, and the polymerization product was a white bovine transparent solid. The [η] -M empirical formula of the measured molecular weight determined by G. Natta et al. [Η] = 1.06 × 10 ~ (-2) M ~ (0.74); the molecular weight of the radiation polymerization product was measured by the viscosity method at 30.0 ° C , Its value is equal to 1.34 × 10 ~ 5. This proves that the styrene-irradiated product is a styrene polymer. Its molecular weight than the general chemical polymerization of polymers obtained by the molecular weight