端基

duān jī
  • end group;terminal group
端基端基
端基[duān jī]
  1. 聚合物假冠醚研究(VI)以苯环为端基的[2,2,2]开链穴醚及其酚醛型聚合物的合成与吸附性能

    STUDIES ON POLYMER PSEUDO CROWN ETHER ( VI ) Synthesis and Adsorption Properties of [ 2,2,2 ] - Open Chain Cryptand Containing end group Phenyl and Its Phenolic Polymers

  2. 综合使用核磁、VPO和近红外光谱分析技术对聚异丁烯活性端基含量以及相对分子质量的测定进行了详细研究。

    This paper researches measuring method of high active end group content and molecular weight of polyisobutene using nuclear magnetic resonance , vapour pressure osmosis and near infrared spectra .

  3. 在这些端基中,带有烯丙基氯原子的端基活性最高。

    Of these end groups those having an allylic chlorine might be expected to show the highest activity .

  4. 新型端基型疏水缔合水溶性聚合物的合成及其性能C端亲-疏水氨基酸在蛋白质规则二级结构中使用规律

    Rules of the Occurrence of C-terminals ′ Hydrophilic-hydrophobic Amino Acids in Regular Secondary Configurations in Proteins

  5. 叙述了引入F原子或引入含氟端基的方法:电化学反应法、聚合反应法和其它反应法。

    Besides , diversity application for electrochemical reaction , polymerization and other reactions are introduced .

  6. 手性N,O-配体在端基炔对醛的不对称加成中的应用研究。

    The applications of the chiral N , O-ligands in the asymmetric addition of phenylacetylene to aldehydes were studied in the paper .

  7. 稀土与不同端基直链聚醚配合物的合成及其NMR研究

    Synthesis and 1H NMR Study of Rare Earth Complexes with Acyclic Glycols of Different Terminal Groups

  8. 研究了偶氮苯端基取代基时ABA三嵌段共聚物性能的影响。

    Property dependence of ABA triblock copolymers on the terminal substituent of azobenzene was investigated .

  9. 在DSC曲线上可以看出随着端基取代烷链的增长,熔点逐渐降低。

    It can be seen from the DSC trace that with the growth of alkyl chains , the melting point decreases .

  10. 结果表明:(1)端基羧酸根离子要与中心Cu(Ⅱ)离子配位只能从轴向配位;

    It is concluded that ( 1 ) The complex of end-carboxylic acid ion and central Cu ( ⅱ ) can be formed only from axial rake ;

  11. 研究表明:不同的含氟聚合物以及具有不同端基的同种含氟聚合物对PEEK的结晶行为有不同的影响。

    Different fluoropolymers and the same fluoropolymer with different terminal groups have different effects on PEEK crystallization behavior .

  12. 通过RAFT自由基聚合合成含叠氮端基的聚N-异丙基丙烯酰胺氮氧自由基&过渡金属配合物的结构和磁性研究

    Synthesis of Azido-capped Poly ( N-isopropylacrylamide ) by RAFT Free Radical Polymerization Structures and Magnetic Research of Nitroxide Radicals-Transition Metal Coordination Complexes

  13. 在较低温度,较短时间条件下,CVD铜在三种不同端基的SAMs上沉积具有一定的选择性。

    Copper was selectively deposited on the three SAMs with different terminal groups at the lower deposition temperature and shorter deposition time .

  14. 此外,以该药物端基非离子表面活性剂胶束为模板通过一步法合成了介孔SiO2-布洛芬药物释放体系。

    Moreover , a drug controlled-release system of mesoporous silica / ibuprofen was synthesized under one step method with the ibuprofen containing nonionic surfactant as the template .

  15. 随着温度的提高,时间的延长CVD铜在三种不同端基SAMs上沉积的选择性逐渐消失。

    As temperature increased or time elapsed , the selective deposition phenomena of copper on the three various self-assembled monolayers disappeared . 5 .

  16. 建立了原位热裂解技术和热裂解动态红外技术,并与GC-MS相结合,研究高聚物端基结构的方法。

    Our research work mainly engaged in the following works : 1.The method of studying the end-group of polymers by in-situ-pyrolysis , pyrolysis-FTIR and GC-MS has been established .

  17. 论文的第三部分,研究了端基改性SSBR的结构与性能及其与炭黑的相互作用。

    In the third part , we studied the structure-property of end-modified SSBR and its interaction with CB .

  18. 综述了可熔性聚四氟乙烯(PFA)的聚合工艺、后处理工艺、不稳定端基处理工艺、晶核尺寸的控制方法。

    Polymerization process , after-treatment process , after-treatment of unstable end-group , control method for crystalline core size are reviewed .

  19. 本文由两部分组成:元素碘存在下的醋酸乙烯酯DT聚合;带有碘活性端基的聚醋酸乙烯酯与甲基丙烯酸甲酯的嵌段共聚。

    The thesis consists of two parts : 1 . Degenerative transfer polymerization of vinyl acetate in the presence of iodine using AIBN as an initiator ;

  20. 通过末端带有游离氨基的间苯二酚杯芳烃酰胺衍生物与水杨醛反应,合成了含水杨醛亚胺端基的Schiff碱衍生物;

    A series of polydentate Schiff base ligands of calix [ 4 ] resorcinarene were easily prepared from the amides which containing terminal amino groups with salicylaldehyde .

  21. 本论文研究目标是在常规阴离子聚合方法合成SBS的基础上,通过端基转化实现了SBS与极性单体共聚。

    Based on the general synthesis of SBS by anionic polymerization mechanism , we have carried out the copolymerization of SBS with several polar monomers by conversion of end-group of SBS .

  22. 综合评述了用NMR研究橡胶化学结构、构型、构象、端基和多相系统的情况,以及发展前景。

    The applications of NMR in the study of chemical structure , configuration , conformation , terminal group and heterogeneous system , as well as the development prospect of NMR were reviewed with 34 references .

  23. 乙炔端基砜基Semi-IPN的两相结构与相分离机理

    New semi-interpenetrating polymer networks from acetylene-terminated sulfone and thermoplastic resin & phase structure and mechanism of phase separation

  24. 乙炔端基砜基Semi-IPN的性能和破坏形态

    New semi-interpenetrating polymer networks from acetylene - terminated sulfone and thermoplastic resin & the properties and fracture morphologies

  25. 本文用电位滴定法直接测定了聚对苯二甲酰对苯二胺(PPTA)的羧端基含量。

    The application of potentiometric titration has effected a direct determination of the carboxyl end-groups of poly ( paraphenylene terephthalamide ) & PPTA .

  26. 研究了烯端基单体摩尔比对PAR热性能的影响,PAR-E失重5%的分解温度比未封端的PAR要出20~30℃。

    Studied end-ene monomer molar ratio on the thermal properties of PAR , allyl ester-terminated poly 5 % weight loss decomposition temperature than the non-sealing side of the PAR to 20 ~ 30 ℃ .

  27. 用亚磷酸三苯酯和吡啶做缩合剂,在NMP溶液中发生聚合反应,合成了端基为氨基的两种新型超支化聚酰胺。

    Hyperbranched aromatic polyamides were prepared by direct polycondensations of the two monomers in the presence of triphenyl phosphite and pyridine as condensation agents in NMP .

  28. 以末端基为羟基的聚二甲基硅氧烷(PDMS)与聚四甲基醚二醇(PTMG)为混合软段合成出一系列含硅氧烷的聚氨酯弹性体。

    A series of siloxane-containing polyurethanes were synthesized using polytetramethylene ether glycol ( PTMG ) and hydroxyl terminated polydimethylsiloxane ( PDMS ) as mixed soft segments .

  29. 研究了羟端基脂肪族超支化聚酯(HBPE)对环氧树脂(EP)固化体系力学性能的影响。

    The effects of hyperbranched polymer ( HBPE ) on mechanical properties of epoxy resin ( EP ) curing systems were studied .

  30. 采用IR和端基分析对PAMAM的结构进行了表征,同时采用O/W型的模拟原油乳液评价了PAMAM的破乳性能。

    The structure of PAMAM were characterized by IR and terminal analysis and the demulsification of PAMAM has been investigated by using the simulated O / W emulsion .