molecular weight reductionPolypropylene (PP) is the most widely used polyolefin, due to its high mechanical strength and better processability in comparison to the others in its group. Conventional methods of polymerisation result in high molecular weights of PP. However, high molecular weights are ...
The molecular weight distribution of several polypropylene samples was studied by the column elution method. With the exception of a lower molecular weight sample, the molecular weight distribution curves were found to be well described by a revised log-normal function presented by DAVIS et al. The...
超高分子量聚丙烯腈 6) ultra high molecular weight polypropylene fiber 超高分子量聚丙烯纤维 参考词条 乘积矩阵ATA战国中晚期 补充资料:高分子量聚丙烯酸钠 分子式: 分子量: CAS号: 性质:见高分子絮凝剂TXY。 说明:补充资料仅用于学习参考,请勿用于其它任何用途。
Analysis of low molecular weight constituents of polypropylene and other polymeric materials using on‐line SFE‐SFC 来自 Wiley 喜欢 0 阅读量: 10 作者: Cotton, Nicholas J.,Bartle, Keith D.,Clifford, Anthony A.,Ashraf, Sameena,Moulder, Robert,Dowle, Christopher J. 展开 摘要: ...
Isotactic polypropylene 70–80 0.95 0.85 High-density polyethylene 70–80 1.0 0.85 Low-density polyethylene 45–55 1.0 0.85 Crystalline and amorphous plastics have several characteristic differences. Amorphous polymers do not have a sharp melting point but do have what is called a glass transition tem...
We have shown by two separate measurements that polypropylene when melted after irradiation undergoes crosslinking from the inception of irradiation. The first proof was an immediate increase in the solution viscosity of a narrow molecular weight fraction of polypropylene. The second proof was the marke...
The ultrahigh molecular weight polypropylene(UHMWPP) and UHMWPE are both flexible chain polymers. 由于超高分子量聚丙烯(UHMWPP)与UHMWPE均属柔性链高分子,结构简单、极性相似、溶度参数相近、密度相近,并且聚丙烯还有耐蠕变性能优越、使用温度更高以及粘结性好等优点,因此用UHMWPP对UHMWPE进行改性,可以使其具有更...
Molecular weight studies of chlorinated atactic polypropylene (CAPP), prepared by thermal chlorination of atactic polypropylene (APP), have been carried out by viscosity measurements and gel permeation chromatography. In general, the intrinsic viscosity [η], number average molecular weight (Mn) and ...
THE MOLECULAR WEIGHT AND ITS DISTRIBUTION OF 1,2-POLYBUTADIENE PREPARED WITH MOLYBDENUM CATALYST SYSTEM钼体系聚1,2-丁二烯分子量及其分布 The effects of vinyl content and molecular weight of 1,2-poly-butadiene(1,2-PB) on the morphology and properties of its blends withpolypropylene(PP) were s....
Molecular weight change at various depths of isotactic polypropylene samples exposed to different times of duration in Xenotest 150S.[Data from Girois, S; Audouin, L; Verdu, J; Delprat, P; Marot, G, Polym. Deg. Stab., 51, 2, 125-32, 1996.]Copyright © 1996 Molecular weight ...