Synonyms for petg or Related words with petg
Examples of "petg"
Plastic containers other than
can absorb microcystins such that detection is not possible. This is also true of some other cyanotoxins.
In some cases, the modified properties of copolymer are more desirable for a particular application. For example, cyclohexane dimethanol (CHDM) can be added to the polymer backbone in place of ethylene glycol. Since this building block is much larger (6 additional carbon atoms) than the ethylene glycol unit it replaces, it does not fit in with the neighboring chains the way an ethylene glycol unit would. This interferes with crystallization and lowers the polymer's melting temperature. In general, such PET is known as
or PET-G (Polyethylene terephthalate glycol-modified; Eastman Chemical, SK Chemicals, and Artenius Italia are some
is a clear amorphous thermoplastic that can be injection molded or sheet extruded. It can be colored during processing.
FDM uses the thermoplastics PLA, ABS, ABSi, polyphenylsulfone (PPSF), polycarbonate (PC),
and Ultem 9085, among others. These materials are used for their heat resistance properties. Ultem 9085 also exhibits fire retardancy making it suitable for aerospace and aviation applications.
There are many commercial end uses for lenticular images, which can be made from PVC, APET, acrylic, and
, as well as other materials. While
and APET are the most common, other materials are becoming popular to accommodate outdoor use and special forming due to the increasing use of lenticular images on cups and gift cards. Lithographic lenticular printing allows for the flat side of the lenticular sheet to have ink placed directly onto the lens, while high-resolution photographic lenticulars typically have the image laminated to the lens.
A related product, produced by a small company in New Jersey, was Rowlux. Unlike the Vari-Vue product, Rowlux used a microprismatic lens structure made by a process they patented in 1972, and no paper print. Instead, the plastic (polycarbonate, flexible PVC and later
) was dyed with translucent colors, and the film was usually thin and flexible (from 0.002" or in thickness).
Due to its chemical stability, it acts as a protective barrier against chemicals. It is used as a coating and prefabricated liner for chemical applications. PCTFE is also used for laminating other polymers like PVC, polypropylene,
, APET etc. It is also used in transparent eyeglasses, tubes, valves, chemical tank liners, O-rings, seals and gaskets.
Layer Plastic Deposition is a technology in which printer is melting thermoplastic material (filament) in the extruder and apply it precisely on heated platform layer after layer. Zortrax M200 dedicated printing materials are: Z-ABS, Z-ULTRAT, Z-GLASS, Z-HIPS, Z-PCABS, Z-
and Zortrax Inventure - Z-ULTRAT Plus.
Thermoplastic polyesters containing CHDM exhibit enhanced strength, clarity, and solvent resistance. The exact properties of the polyesters vary from the high melting crystalline poly(1,4-cyclohexylenedimethylene terephthalate), PCT, to the non-crystalline copolyesters with the combination of ethylene glycol and CHDM in the backbone. The properties of these polyesters is also dependent on the cis/trans ratio of the CHDM monomer. CHDM has low melting point and reduces the degree of crystallinity of PET homopolymer, improving its processability. With improved processability, the polymer tends to degrade less to acetaldehyde and other undesirable degradation products. The copolymer with PET is known as glycol-modified polyethylene terephthalate,
is used in many fields, including electronics, automobiles, barrier, and medicals etc.
Beta-galactosidase has many homologues based on similar sequences. A few are evolved beta-galactosidase (EBG), beta-glucosidase, 6-phospho-beta-galactosidase, beta-mannosidase, and lactase-phlorizin hydrolase. Although they may be structurally similar, they all have different functions. Beta-gal is inhibited by L-ribose, non-competitive inhibitor iodine, and competitive inhibitors phenylthyl thio-beta-D-galactoside (
), D-galactonolactone, isopropyl thio-beta-D-galactoside (IPTG), and galactose.
The cytochrome bf complex is a dimer, with each monomer composed of eight subunits. These consist of four large subunits: a 32 kDa cytochrome f with a c-type cytochrome, a 25 kDa cytochrome b with a low- and high-potential heme group, a 19 kDa Rieske iron-sulfur protein containing a [2Fe-2S] cluster, and a 17 kDa subunit IV; along with four small subunits (3-4 kDa):
, PetL, PetM, and PetN. The total molecular weight is 217 kDa.
Second-generation ID cards contain a non-contact IC chip card, a directional holographic "Great Wall" image, an anti-counterfeiting film made of green multi-layer polyester (
) composite material, optical variable optical storage containing the text "中国CHINA" situated on the card, and a microfilm string generating the letters "JMSFZ" (initials for the Pinyin of "Jumin Shenfenzheng"), and a "Great Wall" logo revealed by ultraviolet light.
β-galactosidase can catalyze two different reactions in organisms. In one, it can go through a process called transgalactosylation to make allolactose, creating a positive feedback loop for the production of β-gal. It can also hydrolyze lactose into galactose and glucose which will proceed into glycolysis. The active site of β-galactosidase catalyzes the hydrolysis of its disaccharide substrate via "shallow" (nonproductive site) and "deep" (productive site) binding. Galactosides such as
and IPTG will bind in the shallow site when the enzyme is in "open" conformation while transition state analogs such as L-ribose and D-galactonolactone will bind in the deep site when the conformation is "closed".
Such copolymers are advantageous for certain molding applications, such as thermoforming, which is used for example to make tray or blister packaging from co-PET film, or amorphous PET sheet (A-PET) or
sheet. On the other hand, crystallization is important in other applications where mechanical and dimensional stability are important, such as seat belts. For PET bottles, the use of small amounts of isophthalic acid, CHDM, diethylene glycol (DEG) or other comonomers can be useful: if only small amounts of comonomers are used, crystallization is slowed but not prevented entirely. As a result, bottles are obtainable via stretch blow molding ("SBM"), which are both clear and crystalline enough to be an adequate barrier to aromas and even gases, such as carbon dioxide in carbonated beverages.
Cyclic olefin copolymers (COC) or polymers (COP) can provide moisture barrier to blister packs, typically in multilayered combinations with polypropylene (PP), polyethylene (PE), or glycol-modified polyethylene terephthalate (
). Cyclic olefin resins are generally amorphous and are noted for good thermoforming characteristics even in deep cavities, leading some to use COC in blister packaging as a thermoforming enhancer, particularly in combination with semicrystalline resins such as PP or PE. Films can be manufactured via coextrusion or lamination. WVTR values of commercial cyclic olefin-based pharmaceutical blister films typically range from 0.20 to 0.35 g/m/day at 38 °C/90% RH. Unlike PVC and other common pharmaceutical barrier resins, cyclic olefin resins do not contain chlorine or other halogens in their molecular structure, being composed solely of carbon and hydrogen. Cyclic olefin resins are available which comply with pharmaceutical packaging guidelines in the US, Europe, and Japan.
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