嵌段共聚物

Furthermore, studies on the confinement-induced self-assembly can promote the understanding of intrinsic character of block polymers segregation.

研究嵌段共聚物体系在受限条件下的自组装过程，还有助于人们深入探讨嵌段共聚物的相行为本质。

These effects may be due to frequent reactivation of the active center for blocky copolymer by hydrogen.

我们推测这可能是由于H_2对发生丙烯二级插入的嵌段性活性中心频繁活化的作用，导致原来不加氢时生成嵌段共聚物转化为加氢下生成无规共聚物。

RESULTS:①Cytocompatibility of PEG-PLA-PGL membranes with HUVECs: The observation result of phase contrast microscopy showed that, endothelial cells planted on the PEG-PLA-PGL membranes began to attach and stretch after being planted 4-6 hours. Three days later, cells grew in colonies rapidly, after 5 days, colonies began to fuse and seemed like cobble-stone. The cells were shuttle or polygon in shape after passages.

结果：①人脐静脉内皮细胞与聚乙二醇-聚乳酸-聚谷氨酸三嵌段共聚物膜片的细胞相容性：相差显微镜下种植在聚乙二醇-聚乳酸-聚谷氨酸三嵌段共聚物膜片上的细胞4~6 h后即开始贴壁、伸展，3 d后细胞开始呈集落样生长，生长较快，5 d后细胞集落开始融合，呈现特征性的鹅卵石样形态，经多次传代后，细胞呈长梭形或多角形，与对照组相比无明显差异。

The results of DSC and TG studies showed that the blends maintained the heat stability as that of the matrix. The dispersion of the reinforcing phase in the matrix can be well maintain under the circle heating and cooling heat treatment, which is important for its applications.

DSC和TG的研究结果表明，所获得的共混体系基本上保持了基体本身的热稳定性，同时共混体系的热稳定性还受到嵌段共聚物含量的影响；在反复的升降温过程中，嵌段共聚物在基体中的分散状态得到很好的保持，表现出相当的相结构稳定性，这一性质对于材料在工业上的应用意义重大。

The effects of the size of hydrophilic/hydrophobic chain on the emulsion polymerization are investigated in detail.

该嵌段共聚物是很好的聚丙烯酸酯乳液稳定剂，论文中详细研究了嵌段共聚物分子链中的亲水亲油链段的尺寸大小对乳液性能的影响。

There is a competition between ether oxygen atoms of the polymer and the ions for available water of hydration, which indirectly weakens the interaction of polymer with water and results in a decrease in the solubility of polymer in water.

用无机盐和脂肪醇调控PEO-PPO-PEO嵌段共聚物聚集，荧光光谱技术提供了降低PPO链段与水的相互作用，推动嵌段共聚物在水中胶团化的证据。

A novel type of amphiphilic tri-block copolymers with both pH and temperature sensitiveness: poly-poly (dimethylamino ethyl methacrylate)-poly (ε-caprolactone)(PEG-PDMAEMA-PCL) was synthesized via sequential oxyanionic polymerization of macro-molecular: PEG, with a hydroxyl at one end, and dimethylamino ethyl methacrylate andε-caprolactone, with the potassium naphthalene as the initiator.

在本文中，报道了一类新型的兼具pH和温度敏感的双亲性嵌段共聚物：聚乙二醇-聚甲基丙烯酸N，N-二甲氨基乙酯-聚己内酯(PEG-PDMAEMA-PCL)及聚甲基丙烯酸N，N-二甲氨基乙酯-聚己内酯(PDMAEMA-PCL)的制备；并利用动态光散射和氢核磁共振光谱(~1H NMR)对该嵌段共聚物的水溶液性质进行研究；在此研究结果的基础上，初步探讨了其在仿生物矿化中的应用。

Conductivity of Polyoxyethylene/Poly (2-vinyl pyridine)Blend and Compatibilizing Effect of Lithium Perchlorate;2. Graft terpolymerization of polyoxyethylene macromer with acrylates;3. Then multiblock copolymers was obtained by condensing polyoxyethylene and poly(2 vinylpyridine)with dichloromethane in the presence of potassium hydroxide.

甲基萘锂作为引发剂利用阴离子聚合得到 2 乙烯基吡啶的遥爪双羟基低聚物(P2VP)，然后以二氯甲烷作偶联剂与聚环氧乙烷反应制备P2VP和PEO多嵌段共聚物，考察了反应时间对偶联反应的影响，并对共聚物进行了IR和1H NMR表征，由1H NMR谱的积分曲线得到了共聚物中PEO链段质量分数。

Because the miscibility of TLCPs and PSF was poor, a new series of block copolymers—the block copolymers of PSF chain and TLCPs chain were prepared.

首次设计合成了一系列嵌段共聚物—聚砜链段与TLCP链段的嵌段共聚物，研究了其结构、液晶性、热性能。

For example, the interaction between substrate and block copolymer is determined by surface free energy of the substrate, crystallization is dependent on crystallization temperature and annealing temperature, and microphase segregation strength varies with chain length of the block copolymer.

基体和嵌段共聚物之间作用力可通过基体表面自由能调控，可结晶链段的结晶可通过结晶条件调控，相分离强度可通过嵌段共聚物链长控制。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。