嵌段共聚物

The crystallization morphology and isothermal crystallization process were studied by means of polarized microscope and DLI for poly block copolymers.

采用偏光显微镜和光学解偏结晶速率仪研究了嵌段聚醚酯共聚物的结晶形态和等温结晶过程。

This effect is probably related to the interaction between amorphous PE in PP copolymer and PE phase in mPE and EPDM. T〓 of mPE decreases with increasing the octene content, and maximum damping of the glass transition relaxation increases.

PP／SEBS共混物中SEBS的玻璃化温度随SEBS含量的增加而降低，表明共聚PP中的PE相对SEBS中丁二烯嵌段的玻璃化松弛转变影响很小。mPE中的辛烯含量越高，其低温损耗峰的强度越高，玻璃化温度越低，低温韧性越好。

This monomer co polymerized with acrylamide, then a copolymer PEPO PAM was obtained.

本文合成了脂肪醇嵌段聚醚丙烯酸酯单体，并与丙烯酰胺共聚，得到共聚物PEPO PAM。

Objectives: To investigate the effects of adhesion and proliferation of bone mesenchymal stem cells in the surface of lactic acid/glycolic acid/asparagic acid-co-polyethylene glycol PLGA- tri-block polymer scaffolds, try to find a new biomaterial to induce seed cells in vitro for bone tissue engineering.

目的：探讨大鼠骨髓间充质干细胞BMSCs在聚丙交酯/乙交酯/天冬氨酸-聚乙二醇三嵌段多元共聚物 PLGA-表面粘附、增殖的情况，为组织工程学体外诱导种子细胞生长提供新的生物材料。

Firstly, Copolymerization of acrylamide and styrene was carried out in a microemulsion system, in which AM aqueous solution was the continue phase and St was the dispersed phase using ST-80 as surfactants respectively, then hydroxamic functions were prepared with hydroxylamine salt at temperatures of from 60℃ to 90℃.

首先以丙烯酰胺水溶液为连续相，以苯乙烯为分散相，ST-80为乳化剂制成微乳液，在15℃~35℃合成丙烯酰胺与苯乙烯的共聚物；然后采用程序控温方式，在60℃~90℃用硫酸羟胺将共聚物羟肟化合成了一种带有苯环结构的嵌段型氧肟酸类聚合物材料。

Under certainconditions,SBS molecules can not form polymolecular micellmicelle because of longer PS block or shorter PB block.

研究表明：SBS在PS嵌段的选择性溶剂中的胶束行为与共聚物组成、嵌段长度，微观结构及溶液浓度和温度有关。

In order to improve the compatibility of these blends while maintaining the length of the in-situ formed TLCP fibrils and thermal resistance properties of TLCP, several novel compatibilizers, such as block and graft polymers, sulfonate ionomers, reactive oligomers, have been used to compatibilize PSF/TLCP blend.

为了在改善原位复合体系相容性的同时尽量保持TLCP的成纤性和体系的耐热性，本文提出了用嵌段及接枝共聚物、磺化聚砜锌盐、带有高反应活性基的反应性低聚体、可交联型低聚物作为增容剂改进体系的相容性。

The size of micelles is related to the chain architecture and the lengths of each block of the block copolymers.

胶束的粒径与共聚物分子链及各嵌段的长度有关。

The chain structure was characterized by illustrating the average block length in terms of the portion of different triads.

采用13C-NMR技术测定共聚物中三种不同连接方式(AKA，DKD，AKD)的平均链段长度，共聚物为短嵌段结构。

Two types of three-arm or four-arm star-shaped D,L-PLGA50-b-PL-LA copolymer were synthesized via the block copolymerization of L-LA monomerwith star-shaped D,L-PLGA50 as macroinitiator and 〓 as catalyst.

以三臂或四臂星型D，L-PLGA50共聚物为大分子引发剂、〓为催化剂，引发L-LA单体的嵌段共聚合，合成了三臂或四臂星型D，L-PLGA50-b-PL-LA共聚物。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。