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Ultra-high-molecular-weight polyethylene ( UHMWPE, UHMW) is a subset of the thermoplastic polyethylene. Also known as high-modulus polyethylene ( HMPE ), it has extremely long chains, with a molecular mass usually between 3.5 and 7.5 million amu. [1] The longer chain serves to transfer load more effectively to the polymer backbone by ...
Oct 1, 2020 · As stated by ASTM, “ultrahigh molecular weight polyethylene can be defined as linear polyethylene with viscosity average molecular weight (Mv) larger than 3 million g/mol” [20], [21]. The PE chains are several orders of magnitude longer than those of simple HDPE, typically, 100,000 to 250,000 monomer units per chain as compared 700 to 1800 ...
- Ketan Patel, Ketan Patel, Samir H. Chikkali, Samir H. Chikkali, Swaminathan Sivaram, Swaminathan Siv...
- 2020
Feb 4, 2020 · Ultra-High Molecular Weight Polyethylene (UHMWPE) is used in biomedical applications due to its high wear-resistance, ductility, and biocompatibility. A great deal of research in recent decades has focused on further improving its mechanical and tribological performances in order to provide durable implants in patients.
- Muzamil Hussain, Rizwan Ali Naqvi, Naseem Abbas, Shahzad Masood Khan, Saad Nawaz, Arif Hussain, Nida...
- 10.3390/polym12020323
- 2020
- Polymers (Basel). 2020 Feb; 12(2): 323.
Sep 1, 2020 · Three grades of polyethylene, with weight-average relative molar masses, M ‾ W ${\\bar{M}}_{\\text{W}}$ , of approximately 0.6 × 10 6 , 5 × 10 6 , and 9 × 10 6 , were supplied as compression mouldings by a leading manufacturer of ultra-high molecular weight polyethylene (UHMWPE). They were code-named PE06, PE5, and PE9, respectively. Specimens cut from these mouldings were subjected to a ...
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Ultra-high molecular weight polyethylene (UHMWPE) is the most common bearing material in total joint arthroplasty due to its unique combination of superior mechanical properties and wear resistance over other polymers. A great deal of research in recent decades has focused on further improving its performances, in order to provide durable implants in young and active patients. From ...
- Pierangiola Bracco, Anuj Bellare, Alessandro Bistolfi, Saverio Affatato
- 2017
2.5.7 Ultra-high molecular weight polyethylene. Ultra-high molecular weight polyethylene (UHMWPE) belongs to the thermoplastic PE with a molecular mass usually between 2 and 6 million. As an extended chain PE fiber, it can produced by gel spinning, which yields a highly oriented fibrous structure with exceptionally high crystallinity (95–99% ...
Sep 1, 2020 · The aim of this project was to study the efficacy of current methods of quality control and quality assurance for ultra-high molecular weight polyethylene (UHMWPE) products, and find improvements where possible. Intrinsic viscosity (IV) tests were performed on three grades of polyethylene with weight average relative molar masses M ̅ $̅{M}$ w of about 6 × 10 5 , 5.0 × 10 6 and 9.0 ...
