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如同顺-1,4-聚丁二烯(PBd)和聚异戊二烯(PIP),在一定的催化条件下,顺-1,4-丁二烯-异戊二烯无规共聚物(PBI,简称丁戊无规共聚物)可生成环化顺-1,4-丁戊无规共聚物(CP-BI)。作者曾报道用裂解色谱法表征环化顺-1,4-聚丁二烯(CPBd),本文对不同组成的CPBI和PBI进行了裂解色谱比较研究。 表1所列试样由实验室合成。用CDS pyro-probe 190型裂解器,SP-2305E型气相色谱仪,FID。裂解温度700℃,裂解时间5秒,色谱柱4mm×3m不锈钢柱,填充20%SE-30固定相(101白色担体),柱温106℃,载气氮气40mL/min。试样量约30μg,放于石英管内,后者再插入
Like cis-1,4-polybutadiene (PBd) and polyisoprene (PIP), cis-1,4-butadiene-isoprene random copolymer PBI, abbreviated Ding Ding random copolymer) can be cyclized cis -1,4-Butane random copolymer (CP-BI). The authors have reported the characterization of cyclized cis-1,4-polybutadiene (CPBd) by pyrolysis chromatography. In this paper, pyrolysis chromatograms of CPBI and PBI with different compositions were compared. The samples listed in Table 1 were synthesized by the laboratory. Using a CDS pyro-probe 190 cracker, SP-2305E gas chromatograph, FID. The pyrolysis temperature was 700 ℃ and the lysis time was 5 seconds. The column was 4mm × 3m stainless steel column and filled with 20% SE-30 stationary phase (101 white support). The column temperature was 106 ℃ and the carrier gas nitrogen was 40mL / min. The sample volume of about 30μg, placed in quartz tube, the latter insert