立构规整性
- 网络stereoregularity;tacticity;steric regularity
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结果表明,采用N型催化剂生产的聚丙烯具有较好的立构规整性,这保证了树脂更适于制作纤维制品,也为聚烯烃的物理改性与化学改性提供了适宜的基材。
The results indicate that the propylene homopolymer produced with N catalyst possesses high stereoregularity ; this character ensures the resin to be suitable for manufacturing fiber and make the resin be an appropriate base material for physical and chemical modification of polyolefin .
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HFIP的存在,还可以实现对聚合物立构规整性的控制。
HFIP also facilitated the polymerization with control over stereoregularity of the polymers .
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不溶物立构规整性好、结晶度高,保持了材料的良好刚性。
The high isotacticity and crystallinity of the insoluble fraction make the material remain superior rigidity .
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由于茂金属聚烯烃所具有的独特的立构规整性和良好的物理力学性能,引起了材料界和产业界的极大关注,迅速形成了茂金属聚合物的研究热潮。
Because the metallocene polyolefine has unique isotacticity and good physical mechanics performance , it has caused the material and the industrial field enormous attention , with a rapidly research upsurge on the metallocene polymer .
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研究结果发现:末端烷氧基的增加可以提高聚合物主链的立构规整性,改善聚合物的溶解性,提高聚合物的溶液荧光量子效率。
It is found that the added of the alkoxy group can improve the polymer structure of the main chain regularity , increase the solubility of polymer and raise the fluorescence quantum efficiency of solution .
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经开环易位聚合后的聚合物主链上仍保留不饱和的碳碳双键,构成了其独特的微结构,如双键顺反比例及立构规整性等。
When ROMP of monomers occured , the unsaturated carbon-carbon double bond could remain in the main chain of polymers , constituting its unique microstructure , such as trans / cis ratio of double bond and tacticity .