乙烯

In this study, we first synthesize a conducting polymer, P3HT, via Grignard metathesis method. And we functionalize the polymer chain end of P3HT into vinyl group. After characterize from 1H NMR spectroscopy, we use the end functionalized P3HT to proceed coupling reaction with P2VP anion.

为了达到这个研究目的，我们先利用格林纳置换法合成导电高分子P3HT，并将其尾端乙烯化，在经核磁共振仪确定结构后，利用此尾端乙烯化之P3HT与P2VP阴离子反应进行接合。

In some areas, the risk levels of carbon trichloride, hexachlorobutadiene, carbon tetrachloride, chlorylene, tetracarp, trichloroethane , chloroform, gammexane and other pollutants all exceed 10-4, all above the harm value of 1, and these pollutants are likely to cause risks to human health.

而少数区域的六氯乙烷、六氯丁二烯、四氯化碳、三氯乙烯、四氯乙烯、1，1，2-三氯乙烷、氯仿和六六六等污染物风险等级均大于10-4，危害商均大于1，这些污染物均能对人体健康产生风险。

The resistance to oxidation of synthetical ferulaic acid glycolipide was investigated. The result was shown, apple was dipped in 0.62% ferulaic acid glycolipide, the most inhibitor effectiveness of glucose ferulaic esters and xylose ferulaic ester was shown respectively to be 36.92% after four days and 19.47% after eight days, the fastigium of release ethane was postponed respectively to be six days and four days.

本文测定了合成阿魏酸糖脂的抗氧化性，结果表明用0.62％的阿魏酸糖脂浸泡的苹果，阿魏酸葡糖酯抑制效应在处理后4天最明显，抑制率 36.92%，阿魏酸木糖酯抑制效应在处理后8天最明显，抑制率为 19.47%对于果实的内源乙烯释放，经阿魏酸葡糖酯和阿魏酸木糖酯处理的苹果分别推迟乙烯释放高峰期6天和4天。

Due to great amount of double bond on rubber chain,a lot of intramolecular reaction occurred in the system,which made the uncontrolled cross-linked system into a controlled cross-linked copolymerization,resulting in chain growth can't go illimitably in cross-linking process.

苯乙烯和二乙烯苯共聚体系是典型的不可控制的交联聚合体系，加入天然橡胶后，通过阳离子聚合方法，生成三元共聚物线团，由于橡胶分子链上含有大量的双键，聚合体系中能进行分子内反应，使不可控的交联聚合体系成为可控的交联聚合体系，其链增长不能无限制进行，从而可以合成可溶解的交联的聚苯乙烯-二乙烯苯-天然橡胶聚合物。

The present invention relates to an ethylene/alpha-olefin interpolymer product comprising at least one alpha-olefin interpolymerized with ethylene and, characterized in at least one aspect, as having improved properties when utilized in a hot melt adhesive formulation.

本发明涉及包括至少一种与乙烯互聚的α-烯烃的乙烯/α-烯烃共聚体产物，其特征为在至少一方面，当用于热熔粘合剂配制剂时具有改进的性能。

The present invention relates to a polyethylene resin having a multimodal molecular weight distribution, said resin being further characterized in that it has a density in the range of from about 0.925 g/ccm to about 0.950 g/ccm, a melt index (I2) In the range of from about 0.05 g/10 min to about 5 g/10 min, and in that it comprises at least one high molecular weight ethylene interpolymer and at least a low molecular weight ethylene polymer, and a composition comprising such resin.

本发明涉及一种具有多峰分子量分布的聚乙烯树脂，该树脂进一步的特征在于它具有从约0.925g/ccm到约0.950g/ccm的密度，和从约0.05g/10min到约5g/10min的熔融指数(I 2 )，和在于它包括至少一种高分子量乙烯共聚体和至少低分子量乙烯聚合物，以及包括这样树脂的组合物。

The catalytic property of polyvinylidene chloride polyethylene polyamine palladium complex (PVDC-DETA-Pd,PVDC-TETA-Pd,PVDC-TEPA-Pd)for Suzuki reaction of sodium tetraphenylborate with iodobenzene were examined under microwave heating.

本论文研究了聚偏二氯乙烯多乙烯多胺负载钯催化剂和PVDC二苯胺钯催化剂的制备、表征及其在微波条件下对Suzuki反应的催化性能。1。

Hydrophobic-hydrophilic macroporous polydivinylbenzene/polyacrylethylenediamine interpenetrating polymer networks (PDVB/PAEM IPN) were prepared by the sequential suspension polymerization method. These were composed of two networks, of which one was hydrophobic and the other was hydrophilic. The objective of this work was to study the adsorption thermodynamics and adsorption kinetics of this hydrophobic- hydrophilic IPN. The focus was on adsorption isotherms of vanillin at different temperatures, and these fit well into the Freundlich adsorption isotherm. The isosteric adsorption enthalpy, adsorption Gibbs free energies and the adsorption entropy could be calculated according to thermodynamic functions.

采用分步悬浮聚合法制备了具有疏水性能的聚二乙烯基苯(polydivinylbenzene， PDVB)为第一网，具有亲水性能的聚丙烯酰乙二胺(polyacrylethylenediamine， PAEM)为第二网的疏水／亲水大孔聚二乙烯基苯／聚丙烯酰乙二胺互穿聚合物网络(interpenetrating polymer networks， IPN)，研究这类疏水／亲水IPN组成的树脂对吸附质的吸附热力学和吸附动力学；测定了该树脂对香兰素在不同温度下的吸附等温线，吸附等温线符合Freundlich等温吸附方程，利用热力学函数关系计算出了吸附焓、自由能和熵变。

Exogenous lignoceric acid (C24:0) showed a similar effect on protein accumulation and gene activation, indicating that these two compounds may indeed promote fiber elongation by sequentially modulating the production of specific cell wall polymers.

乙烯和C24：0处理的蛋白质组学和转绿水平分析表明：乙烯和24碳饱和脂肪酸(C24：0)能诱导UER1、UGD1和UGP1的蛋白和转录水平的显著提高。暗示二者能够通过诱导某些特殊细胞壁多糖的合成，从而导致纤维细胞的伸长。

The optimum processing is storage for eight days in 15℃,soaking for 50 minutes in 1.7g/L of ethephon. After processing, the limonin of the orangeand lemon degrade about 30% and 40% respectively.

乙烯利处理柠檬的最适组合为乙烯利浓度1.7g/L、浸果50min、15℃贮藏、贮藏8天，经处理后能将柠檬中的柠檬苦素降解40％左右。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。