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(i)建立了一种分子量范围在650—2000的低分子聚聚丁烯的特性粘数和分子量之间的关系式,如 [η]=3.80×10~(-2)M~(0.69)鉴于环已烷具有优良的溶解能力,低毒及易于纯化等优良,我们于是选用了它作溶剂而没有采用其他作者常用的苯作溶剂。 (ii)用这方法测试了几种低分子聚异丁烯的分子量。所得结果与按Endo公式在苯溶液中所测得者平行对照。平均偏差在允许误差范围之内,<5％(见表4)。 (iii)按中分予聚异丁烯粘度法公式计算所得结果比上述两种方法测出的相应值偏低很多(偏低～35％)
(i) The relationship between intrinsic viscosity and molecular weight of low molecular weight polybutene with a molecular weight in the range of 650-2000 has been established, such as [η] = 3.80 × 10 -2 M ~ (0.69) In view of cyclohexane has excellent solubility, low toxicity and easy purification, we choose it as a solvent rather than using other commonly used benzene as a solvent. (ii) Several low molecular weight polyisobutylene molecular weights were tested using this method. The results obtained are in parallel with those measured by the Endo equation in benzene solution. The average deviation is within the allowable error, <5% (see Table 4). (iii) The results obtained from the midpoint to polyisobutylene viscosity formula are much lower (~ 35% lower) than the corresponding values measured by the two methods above