Resins with narrow molecular-weight distribution can have lower die swell, but this doesn't necessarily mean less buildup. 具有窄分子量分布的树脂会有低的出口膨胀,但这不意味着它一定有较少的口模积料。
The results showed that the property and structure of PF resins were intensively influenced by the different molecular-weight distribution. 结果表明:树脂的分子质量分布和结构不同对性能影响很大。
As a result, the maximum viscosity average molecular weight of PLLA is 6.17 × 104, with a narrow molecular-weight distribution, high production rate and light color. 此时聚乳酸的粘均分子量为6.17×104,分子量分布1.37,且产率较高,色泽较浅。