Heat capacities of polyethylene. IV. High molecular weight linear polyethylene

Synthesis of high molecular weight polyethylene using FI catalyst

A FI Zr-based catalyst of bis[N-(3,5-dicumylsalicylidene)-2′,6′­diisopropylanilinato]zirconium(IV) dichloride was prepared and used for polymerization of ethylene. The effects of reaction conditions on the polymerization were examined in detail. The increase in ethylene pressure and rise in polymerization temperature up to 35 oC were favorable for catalyst/MAO to raise the catalytic activity as...

Wear of Ultra High Molecular Weight Polyethylene

synthesis of high molecular weight polyethylene using fi catalyst

a fi zr-based catalyst of bis[n-(3,5-dicumylsalicylidene)-2′,6′­diisopropylanilinato]zirconium(iv) dichloride was prepared and used for polymerization of ethylene. the effects of reaction conditions on the polymerization were examined in detail. the increase in ethylene pressure and rise in polymerization temperature up to 35 oc were favorable for catalyst/mao to raise the catalytic activity as...

Properties of crosslinked ultra-high-molecular-weight polyethylene.

Substantially reducing the rate of generation of wear particles at the surfaces of ultra-high-molecular-weight polyethylene (UHMWPE) orthopedic implant bearing components, in vivo, is widely regarded as one of the most formidable challenges in modern arthroplasty. In the light of this, much research attention has been paid to the myriad of endogenous and exogenous factors that have been postula...

Heat Capacities of Polyethylene III . One Linear and One Branched Sample from 5 to 350

Heat capacities of two polyethyle ne samples. one linear with a de nsity of 0.973 g c m 3 and one branched with a density of 0.91 g c m 3, have been dete rmine d by adiabati c ca lorimetry from 5 to 360 K in a different experimen tal arra nge ment the n e mployed for studies of othe r polyeth ylene samples in thi s series. The heat capac ity behavior of these two samples confirms expectation s ...