The crystallinity of polyethylene decreased with increase of content of short branched chain methyl.
聚乙烯随着短支链甲基含量的增加，结晶度降低。
These catalyst systems are generally used to produce polyolefins having broad molecular weight distributions, especially polyethylene. Some systems are used to produce branched or block polymers.
大多数含茂金属的双组分或多组分催化体系用于制备宽分子量分布聚烯烃，尤其是宽分布聚乙烯，少数用于制备支化或嵌段聚合物。
The morphology of nascent polymer powder shows strip structure by scanning electron microscope. Branched content, crystallinity and crystallite size are similar to those of high density polyethylene.
发现初生聚乙烯粉末具有条状形态结构，其支化度、结晶度及晶粒尺寸均与低压聚乙烯相似，但其熔点和特性粘数较高。
The morphology of nascent polymer powder shows strip structure by scanning electron microscope. Branched content, crystallinity and crystallite size are similar to those of high density polyethylene.
发现初生聚乙烯粉末具有条状形态结构，其支化度、结晶度及晶粒尺寸均与低压聚乙烯相似，但其熔点和特性粘数较高。
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