高分子

Chitosan, with wide application, was a kind of natural polymer materials prepared from chitin.

壳聚糖是由甲壳素经化学改性得到的有广泛应用价值的天然多糖高分子材料。

The low molacular hydrogenated bisphenol A epoxy resin was prepared by the ring-closing reaction of the chlorohydrin ether and alkali and high molecular hydrogenated bisphenol A epoxy resin was synthesis by the addition polymeration of the low one and hygenated bisphenol A.

氢化双酚A和环氧氯丙烷在催化剂作用下开环反应生成了氯醇醚，而后加碱进行闭环反应，制备了低分子质量氢化双酚A型环氧树脂，再将其进一步与氢化双酚A等进行加聚反应，得到高分子质量环氧树脂。

The basic structure of chromogen in PFBs remains the same, so PFBs have fluorescent properties of traditional FBs. Covalent bonds between chromogen and macromolecule chains enhance their photochemical stability, increase their whitening performance and fluorescence quantum yield.

聚合型荧光增白剂中基本发色团的结构不变，具有传统荧光增白剂的光学性能；发色团与高分子链间的共价键使其光化学稳定性大大增强，增白性能和荧光量子产率显著提高。

Monomeric reference compounds having similar chromophore components were also prepared for photophysical comparison.

具有与高分子相同发光团的参考单体也被制备用以作为光物理性质的比较。

Flocculation was used to improve the settleability of sludge from final clarifier .

采用混凝改善二沉池排泥的沉降性能，结果表明：新型阳离子高分子絮凝剂CPF的效果明显优于PAM和Al2(SO4)3，当pH值为7。

The molecular weight dependence of the distribfition of polymer molecules between the coacervate and the dilute phases on the phase separation of polymethylmethacrylate-acetone-methanol system has been proved to follow the relation first derived by Flory for binary systems: f"_j/f′_j = Qe~_j where f"_j and f′_j are the weight fractions of the polymer molecules of molecular weight M_j in the coacervate and in the dilute phases respectively, while Q and σ are parameters.

1。聚甲基丙烯酸甲酯-丙酮-甲醇体系的两次分相实验用θ-溶剂中的沉降速度法测定分相前试样和浓相的分子量分布曲线，得到高分子在浓稀相重量分配的分子量依赖关系 f_j=Qe~证实Flory的溶度函数形式与实际相符，并适用于三元体系的相分离，但Q值与两相体积比R值并不相同。 2。再分级使级分的分子量分布宽度随再分级次数的增加而减小，通常认为到第三次再分级其效果已不显著并不确实。

The effects of the composition of microemulsion, the concentration of polymer and the condition of complex coacervation on the characteristics of nanocapsules were investigated.

考察了微乳液的组成、高分子的浓度和复凝聚的条件对纳米胶囊性质的影响。

The two kinds of materials are connected together by macro-molecular nylon pieces, which eliminate the problem of the coefficient difference of shrinkage of wood and metal.

两种材料通过高分子尼龙件连接，解决了木材和金属收缩系数不同的问题。

With abroad congener technology photograph is compared, the compound function colophony of new research and development is measured to the adsorption of organic matter in liquid waste of printing and dyeing raise 1 times above, and fight contaminative ability to increase greatly.

与国外同类技术相比，新研发的复合功能树脂一般也称离子交换树脂(用化学法将高分子共聚物制成的有机单体颗粒的离子交换剂对印染废水中有机物的吸附(物质表面吸住周围介质中的分子或离子现象)量提高1倍以上，且抗污染能力大大增强。

The invention adopts surfactant of amphipathic block copolymer as structure-directing agent to be dissolved in alcohol solvent, and niobium sources and aqueous solution of inorganic salts are added as structural promoter to be stirred for a certain period of time in the room temperature to form colloid; the colloid is then heated and volatilized under low temperature to remove the solvent and dried and calcined under high temperature to obtain the mesoporous columbium oxide.

本发明将双亲性嵌段高分子表面活性剂作为结构导向剂溶解于醇类溶剂中，加入铌源和无机盐类水溶液作为结构促进剂，在室温下搅拌一段时间后形成胶体，低温下加热挥发除去溶剂，经干燥、高温焙烧而成。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。