查询词典 polymerization

Conducting Polyaniline that can be fully soluble in chloroform was prepared by emulsion polymerization and extraction method, doping with different dopants of macro-molecule functional protonic acids.

系统探讨了有机功能质子磺酸对聚苯胺的各种掺杂方法，采用乳液聚合-萃取法制得了在氯仿中完全溶解的导电聚苯胺。

Signalling through CXCR4 mediates actin polymerization and pseudopodia formation in cells, and induces chemotactic and migration to target organs. In addition, CXCR4-SDF-1 axis can promote tumor angiogenesis and growth.

CXCR4在肿瘤组织中的表达明显高于正常组织，而肿瘤常见转移部位均为CXCR4的配体基质细胞衍生因子-1(stromal cell derived factor-1，SDF-1)表达丰富的器官，SDF-1与CXCR4结合后可使细胞肌动蛋白丝聚合，形成伪足，从而定向诱导肿瘤细胞迁移到特定的靶器官；此外，CXCR4与其配体SDF-1相互作用可以促进局部新生血管作用，利于肿瘤生长。

The PASP is synthesized by means of pyrocondensation polymerization, using maleamic acid as a monomer.

以马来酰胺为单体，采用热缩聚法，合成了聚天冬氨酸PASP

Beijing University of Chemical Technology, Beijing 100029, ChinaAbstract: The PASP is synthesized by means of pyrocondensation polymerization, using maleamic acid as a monomer. The infrared spectrogram and molecular weight of synthetic products are determined.

摘要］以马来酰胺为单体，采用热缩聚法，合成了聚天冬氨酸，对其测定了红外谱图和相对分子质量，研究了可生物降解性、阻垢性能及阻垢性能与相对分子质量的关系。

Key words: polyaspartic acid; pyrocondensation polymerization; scale inhibition; biodegradability

关键词］聚天冬氨酸；热缩聚；阻垢性能；可生物降解性

The PASP is synthesized by means of pyrocondensation polymerization, using maleamic acid as a monomer. The infrared spectrogram and molecular weight of synthetic products are determined.

以马来酰胺为单体，采用热缩聚法，合成了聚天冬氨酸，对其测定了红外谱图和相对分子质量，研究了可生物降解性、阻垢性能及阻垢性能与相对分子质量的关系。

Polyaspartic acid ; pyrocondensation polymerization ; scale inhibition ; biodegradability

聚天冬氨酸；热缩聚；阻垢性能；可生物降解性

Based on 26B4APBN monomer, polyamic acid was obtained by polymerization with pyromellitic dianhydride, and further imidized into polyimide film by heating process.

由二胺单体和均苯四甲酸二酐进行聚合得到26B4APBN/PMDA聚酰胺酸，再经热亚胺化得到聚酰亚胺薄膜；测试了该薄膜的接触角，讨论了单体分子结构对聚合物接触角的影响。

Compared with non-nanopolyaniline synthesized by conventional emulsion polymerization, nanopolyaniline has the narrow and uniform distribution of particle dimension and the diameter of particle is about 4-5nm,and the conductivity reaches 3.2S·cm-1, which is more than 100 times higher than that of nanopolyaniline;Moreover, it has higher solubility in conventional solvent and the solubility reaches 95% in N-methyl pyrrolidone;what's more ,it has higher crystallinity and more uniform crystal proved by XRD, apparent blue shift indicated by UV, which makes it possible to prepare transparent conductive composite films.

结果表明，微乳液法合成的纳米聚苯胺与常规乳液法合成的非纳米聚苯胺相比，具有明显的优越性：粒径分布窄，95%的在10nm 以下，最大的不超过30nm；电导率较高，达到了3.2S/cm，提高了2 个数量级以上；在有机溶剂中的溶解度较高，其中在N-甲基吡咯烷酮中的溶解率达到了95%；X 射线衍射仪分析表明，纳米聚苯胺结晶度高，晶型更为规整；紫外可见光谱研究发现，纳米聚苯胺在可见光区有明显的蓝移，为制备透明的导电复合膜提供了可能。

Comparison of inhibitors for anti-polymerization of isoprene, such as NaNO2, p-tert-butylcatechol, N-methyl pyrrolidone and paradioxybenzene, was carried out using polymer segregation process and the results showed that TBC was the best one.

采用聚合物离析法比较了亚硝酸钠（NaNO2）、对叔丁基邻苯二酚、N-甲基吡咯烷酮、对苯二酚对异戊二烯的阻聚效果，发现TBC阻聚效果最好。

It seems likely that Kraft will return with a better offer.

看起来卡夫要重新考虑一个更好的出价了。

But he'd rather burn off my feelers and watch me squirm.

可他却放任那个家伙对我为所欲为！