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synthetic polymers

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Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005687
EISBN: 978-1-62708-198-6
...Abstract Abstract This article tabulates materials that are known to have been used in orthopaedic and/or cardiovascular medical devices. The materials are grouped as metals, ceramics and glasses, and synthetic polymers in order. These tables were compiled from the Medical Materials Database...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003010
EISBN: 978-1-62708-200-6
...Abstract Abstract A thermosetting resin, or thermoset, is a synthetic organic polymer that cures to a solid, infusible mass by forming a three-dimensional network of covalent chemical bonds. Significant applications include construction and thermoset engineering plastics. This article discusses...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003356
EISBN: 978-1-62708-195-5
... on the triglyceride using the same synthetic techniques that have been applied in the synthesis of petroleum-based polymers. The key step is to reach a high level of molecular weight and cross-link density, as well as to incorporate chemical groups that are known to impart stiffness in a polymer network (e.g...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005676
EISBN: 978-1-62708-198-6
.... However, throughout recorded human history and in various civilizations, there exist numerous references to the use of natural polymers for biological applications, including gutta percha, natural latex, and so on. The turn of the 20th century witnessed the birth of the field of synthetic plastics...
Book Chapter

By Rebecca Tuszynski
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003011
EISBN: 978-1-62708-200-6
.... Isoprene rubber is the synthetic rubber that comes closest to the chemical composition of natural rubber. Both isoprene and natural rubber are cis-polyisoprene (seeexternal ref needed to fig 2 in A0003006 Fig. 2 and the accompanying text in the article “Polymer Science for Engineers” in this Volume...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005667
EISBN: 978-1-62708-198-6
... will be used, for how long, if the polymer has been used previously, and, if so, where and how it was used ( Table 1 ). Examples of synthetic polymers that have previously been used in medical applications Table 1 Examples of synthetic polymers that have previously been used in medical applications...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003007
EISBN: 978-1-62708-200-6
..., the synthetic polymers we call “plastics,” introduced in the late 19th and early 20th centuries, were the first new engineering materials since the advent of metals in ancient times. In its short lifetime—beginning with celluloid, the first commercially successful plastic (1870), and Bakelite, the first...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005682
EISBN: 978-1-62708-198-6
... matrix, commonly forming a new class of materials called glass-ceramics. Polymeric implants can be divided into two broad categories: natural and synthetic polymers. Natural polymers are made of an extracellular matrix of connective tissue, such as tendons, ligaments, skin, blood vessels, and bone...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003255
EISBN: 978-1-62708-176-4
... are typified by natural rubber and by a series of synthetic polymers exhibiting similar mechanical behavior (e.g., polyisoprene). Composites Composites are relatively macroscopic arrangements of phases or materials designed to take advantage of the most desirable aspects of each. As a result...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001225
EISBN: 978-1-62708-170-2
... post-treatments, such as acid brightening, neutralizing, and so on, are also commonly used to prepare the components for recoating. Polymer Removal The removal of solidified synthetic polymer residues is another common use for oxidizing molten salts. Synthetic fiber production involves the use...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005660
EISBN: 978-1-62708-198-6
..., cause cloudiness of the lens. This may be replaced with a synthetic (polymer) intraocular lens ( Table 2 ). Materials for contact lenses, because they are in intimate contact with the tissues of the eye, are also considered biomaterials. As with intraocular lenses, they too are used to preserve...
Book Chapter

By Karl K. Chang
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0009242
EISBN: 978-1-62708-195-5
...-aramid imparts a high degree of thermal stability ( Fig. 12 ). Fibers from PPD- T do not have a literal melting point or a glass transition temperature ( T g ) (estimated at ≥375 °C, or 710 °F), as normally observed with other synthetic polymers. They decompose in air at 425 °C (800 °F...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006651
EISBN: 978-1-62708-213-6
... include having a strong laser absorbance, being stable under vacuum, and being acidic to function as a proton donor. Matrix molecules tend to be small organic molecules, such as sinapinic acid (used for proteins) and 2,5-dihydroxybenzoic acid (used for polar synthetic polymers). Picking a matrix compound...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003006
EISBN: 978-1-62708-200-6
... details the aspects of polymer structure and examines the properties of polymers and the way they are altered by structure. chemical structure engineers polymer names polymer properties polymer science AN ENGINEERING PLASTIC may be defined as a synthetic polymer capable of being formed...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004032
EISBN: 978-1-62708-185-6
...) to facilitate quick water evaporation. The application of the lubricant must not contribute to excessive cooling of the workpieces. Temperatures from 350 to 500 °C (660 to 930 °F) Those most used in this temperature range are graphite dispersions in water, organic-carrier media, or synthetic polymer oils...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003701
EISBN: 978-1-62708-182-5
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003029
EISBN: 978-1-62708-200-6
...Abstract Abstract Flammability is the ability of a material to undergo easy ignition and rapid flaming combustion. This article provides information on flammability tests of polymers and codes and regulations that cite these tests. Many organizations are involved in the characterization...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.9781627081955
EISBN: 978-1-62708-195-5
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005159
EISBN: 978-1-62708-186-3
..., gases, acids, rust preventives, and so forth); and the surface may be carburized or decarburized, nitrided or subjected to some other surface treatment, or coated with a polymer or phosphate. Many other surface chemistry variations are possible. Furthermore, the surface may have residual compressive...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003541
EISBN: 978-1-62708-180-1
... thermoplastics because of the presence of heavy cross links, which inhibits the sliding of polymer chains past each other. Elastomers are typified by natural rubber and by a series of synthetic polymers exhibiting similar mechanical behavior. Polyisoprene, for example, is a synthetic rubber that exhibits...