| 1. | Reaction of pendant group
侧基反应 |
| 2. | Synthesis and characterization of poly aryl ether ketone copolymers with methyl - pendent group
含甲基侧基聚芳醚酮无规共聚物的合成与表征 |
| 3. | Synthesis and properties of poly aryl ketone containing bis phthalazinone and methylene moieties
含苯侧基杂环聚芳酰胺酰亚胺的合成与性能 |
| 4. | Synthesis and characterization of poly aryl ether sufone ether ketone ketone containing methyl pendant
含甲基侧基聚芳醚砜醚酮酮的合成与表征 |
| 5. | Synthesis and characteristic of poly aryl ether sufone ether ketone ketone containing meta - phenyl links and methyl pendant group
含间苯基及甲基侧基聚芳醚砜醚酮酮的合成与表征 |
| 6. | Synthesis and characterization of poly aryl ether ketone poly aryl ether sulfone ether ketone ketone random copolymers with methyl pendant
含甲基侧基聚芳醚砜醚酮酮的合成与表征 |
| 7. | The synthesis and application of non - linear copolymers contained polylactic acid were reviewed . the prospect of this study was previewed in this paper
摘要本文对非线形含活性侧基聚乳酸接枝共聚物的合成、性能以及应用进行了综述，并对该研究的前景进行了展望。 |
| 8. | And some methods for improving their poor solubility are introduced , including : incorporating bulky groups , hydrophilic groups , water soluble polymers and hyper - branched dendrimers ; synthesizing branched derivatives ; and degrading them into oligosaccharide
对其解决的方法进行了分析总结：将体积较大的侧基或亲水性基团大分子引入到分子链上，支链化或键接超支化合物，以及低聚糖化，以满足不同应用领域特别是生物医学工程的要求。 |
| 9. | Abstract : methanesulfonic acid method was used to prepare five acylated chitins . except heptanoyl chitin , four of them , i . e . acetyl chitin , propionyl chitin , butyryl chitin and hexanoyl chitin , had high degree of substitution ( from 1 . 5 to 2 . 0 ) and exhibited lyotropic liquid crystalline behavior and cholesteric phase . as the length of the side chain increased the critical concentration ( w / w ) somewhat increased from 0 . 21 to 0 . 26 because the chain rigidity dropped . the critical concentration values of all the four derivatives were much higher than that of chitin ( 0 . 12 ) due to the decrease of intramolecular hydrogen bonds . the four acylated chitin can form typical banded texture after being sheared . there minimum concentrations to form banded texture of them were evidently different , varied from 0 . 25 ( for acetyl chitin ) to 0 . 37 ( for hexanoyl chitin ) . these results further indicated that liquid crystallinity decreased while the length of flexible side substituents increased
文摘:四种羧酰化甲壳素即乙酰化、丙酰化、丁酰化和己酰化甲壳素在二氯乙酸溶液中均呈现胆甾型溶致液晶相.临界浓度随侧基长度增加而略有增加，衍生物的临界浓度明显都比原甲壳素高许多，这些规律都可以用链刚性的变化来解释.四种羧酰化甲壳素在剪切时均能形成条带织构，而且能形成条带织构的最低浓度有明显差别，随侧基长度增加而提高，进一步表明侧基较长，液晶性减少 |
