Ultrahigh-molecular-weight

Chain Length. The total number of monomer units (which approximately equals x - - y - - z. in the above formula) in PE chains is called the degree of polymerization. It can vary from small (about 10—20 in PE waxes) to very large (over 100,000 for PE of ultrahigh molecular weight (UHMW)). Consequentiy, the molecular weights of PE resins can range from several hundred to several million. 

IM = intermediate modulus and UHMW PE = ultrahigh molecular weight polyethylene. 

Shodex AT-800, HT-800, and UT-800 series are designed for use at high temperature of up to 140, 140, and 210°C, respectively. These columns are suited for the analysis of polymers such as polyolefins, which are insoluble at room temperature. The UT-800 series is recommended if the sample contains ultrahigh molecular weight components (Table 6.3). 

Styragel HMW Column for the SEC of Ultrahigh Molecular Weight Polymers... 

Polyethylene, crystallites in, 1215 high-density, 1210 high-molecular-weight, 1210 kinds of, 1210 low-density, 1210 synthesis of, 240-241 ultrahigh-molecular-weight, 1210 uses of, 242... 

The term polyethylene separator is somewhat misleading, since this separator consists mainly of agglomerates of precipitated silica, held within a network of extremely long-chained, ultrahigh-molecular weight polyethylene molecules. The raw materials, precipitated silica (Si02 — about 60 percent), ultrahigh-... 

UHMW ultrahigh molecular weight ZST zero-strength time... 

Figure 4 displays experimental stress-strain curves for ultrahigh molecular weight (UHMW) polyethylene films derived from... 

Ultrahigh molecular weight ultra-oriented fibers have outstanding tensile strength and modulus, which suits them for use in bullet proof vests. 

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