| 1. | Generally , porphyrins can emit satuared red via energy transfer from hosts wether they are doped or incorporated into polymric materials 无论是将卟啉掺杂还是引入高分子链段,都可以通过从主体材料到卟啉的能量转移获得饱和红光。 |
| 2. | The results showed that the water molecules inside the plastic material were chemically bonded with polymers by hydrogen bonds in the micro - holes formed by the polymer molecule chain 塑封材料中的水分子存在于高分子链围成的微孔洞中,并与高分子聚合物以氢键相连。 |
| 3. | Xrd results revealed that eva easily intercalated into the organo - mmt , and even drove mmt to exfoliate as increasing c16 loading level beyond 1 . 0 cec 表面活性剂修饰量小于mmt的阳离子交换量( cec )时,高分子链较难插层;表面活性剂用量增大, mmt片层可更好地分散,甚至剥离。 |
| 4. | The parameters in simulation could characterize macromolecules adsorption in real solution . varieties of interaction energy between segments corresponded to different macromolecules . varieties of adsorption energy of interface corresponded to different solid surfaces 改变模拟参数大小对高分子链节分布的影响,与真实体系中链节、溶剂和界面等因素对高分子吸附的影响是一致的。 |
| 5. | The grafted membranes were capable of rejecting an anionic dyestuff . in common with other polyelectrolytes , the conformation of grafted ampsa polymeric chains is sensitive to environmental factors such as ph and ionic strength ( i ) 聚丙烯酰胺基甲基丙磺酸为高分子电解质,接枝在膜表面后高分子链与溶质分子相互作用,可使接枝链构象发生变化,从而改变膜孔径的大小,使膜具有环境响应。 |
| 6. | A monte carlo model was developed for simulating the adsorption behaviors of linear macromolecule chains on the solid - liquid interface . the simulations were performed on a simple cubic lattice , which was 50 50 50 sites in size . the concentration profiles of total segments , tails and loops in dilute solutions were used to analyze the influences of simulation parameters ( body concentration , interaction energy between segments , adsorption energy of interface , and macromolecule chain length ) on various adsorption configurations 本文采用montecarlo方法构造了水溶性均聚链状高分子固液界面吸附模型,在50 50 50简单立方格子上模拟研究了高分子稀溶液中链节浓度、链尾和链环分布,并结合真实高分子链的吸附行为,讨论了模拟参数(链节间相互作用能、界面吸附能、体相浓度与链长)对各种吸附构型分布、吸附量、表面覆盖度和附着分数的影响。 |
| 7. | The dispersion of mmt and the properties of composites were basically determined by the nature of organo - mmt and the polarity of the polymer chains . the intercalated nanocomposites could be explained in terms of the formation of " ladder " structure due to the excessive polar groups on the polymer chains which adhere adjacent silicate sheets 插层高分子链的极性基团含量要适宜;否则,极性基团将相邻片层“胶粘”形成稳定的“梯形”结构,导致高分子链插层受阻,易形成插层型纳米复合材料。 |
| 8. | Intercalation and exfoliation behaviors of organo - mmts in low density polyethylene ( ldpe ) and copolyethylene / mmt systems have been investigated . it was found that ldpe has certain intercalation capability , while ethylene vinyl - acetate copolymer ( eva ) with polar groups exhibits some compatibilization and excellent intercalation capability 结果表明,非极性的ldpe插层能力极其有限,聚乙烯共聚物具有良好的插层能力; mmt分散效果以及复合材料的性能取决于高分子链的极性和有机蒙脱土的性质。 |
| 9. | Xrd test results showed that pp polymer chains have intercalated lays of ommt among the series pp - b . tem observed that ommt was stripped and close to the single layer of slices ; among the series pp - a , the characteristic diffraction peak of ommt still appeared the original position , which prove pp polymer chains were too difficult to intercalate directly lays of ommt , tem observed that ommt have serious reunion phenomenon and the majority exist by form who regiment form a cluster Xrd测试结果表明: pp - b系列中的pp高分子链已经插层进入到有机蒙脱土的片层间, tem观察有机蒙脱土大部分被剥离成接近单层片状; pp - a系列中,有机蒙脱土的特征衍射峰仍出现在原位置,说明pp大分子链很难直接插入蒙脱土片层间, tem观察有机蒙脱土较严重的团聚现象,大部分以团簇的形式存在。 |