Aliphatic alkyl saturated containing seventeen carbons as power hydrophobic group is introduced in the side chain of polyurethane. 在合成聚氨酯预聚体时,添加含有17个碳原子的长链脂肪烃的硬脂酸单甘油酯,在聚氨酯大分子侧链上引入强疏水性基团脂肪烃基。
It shows that the carbon aromaticity of vitrinite. semivitrinite and inertinite is 0.84, 0.91 and 0.93 respectively. The aliphatic substituent group and chelate quinonyl contents in the molecular structural unit of vitrinite are higher than that of semivitrinite and inertinite. 结果表明:镜质组、半镜质组和惰质组的芳碳率分别为0.84、0.91和0.93,镜质组分子结构单元中含有较多的脂肪取代基和螯形醌基;
On the other hand, some racemates of trans 1,2 disubstituted cyclopropane with aliphatic group were also separated on the columns. 另一方面,一些带有脂族取代基的反式-1,2-二取代环丙烷类化合物也能在这两种柱上得到拆分。
The relationship of gas phase proton affinity ( PA) of aliphatic amines, alcohols and ethers, inductive effect index ( I) of alkyl group, atomic charge ( q x), electronegativity of element ( X N) of affinity atom in RX molecules was studied. 用烷基诱导效应指数I和RX分子中质子亲合原子X所带电荷qx及元素电负性XN与脂肪胺、醇、醚的气相质子亲合能PA进行关联。
The results indicated that extracts contain aliphatic, aromatic and naphthenic compounds and a large amount of oxygen containing group. 结果表明,萃取物中含有脂肪族结构、芳香结构、大量含氧基团,并含有脂环化合物。
What is more, molecular chain of aliphatic polyester has not any functional or active pendant group. 其次,脂肪族聚合物分子链上没有功能化的或活性的侧基。