Ads
related to: polystyrene chain size- Product Directory
Browse Through the Product catagory
Find the right product
- Lab Products & Equipment
Shop our huge portfolio of labware
equipment from leading brands.
- Browse Labware Equipment
Trusted labware products
for your research needs
- Labware & Equipment
Cell Culture Equipment, Glassware,
Instrumentation, Consumables & More
- GE Whatman Products
GE Whatman is a leading developer
of high-end laboratory products
- Classic Lab Chemicals
High-quality laboratory reagents.
Solvents, salts, acids, bases
- Product Directory
Search results
Results From The WOW.Com Content Network
The length of a fully stretched chain is = for the Kuhn segment chain. [5] In the simplest treatment, such a chain follows the random walk model, where each step taken in a random direction is independent of the directions taken in the previous steps, forming a random coil .
Polystyrene is flammable, and releases large amounts of black smoke upon burning. Expanded polystyrene is lightweight. This is a man in Guiyang, China carrying a lot of expanded polystyrene packaging. In chemical terms, polystyrene is a long chain hydrocarbon wherein alternating carbon centers are attached to phenyl groups (a derivative of ...
Polystyrene has a chain where the substituent R is a phenyl group (C 6 H 5), corresponding to a benzene ring minus one hydrogen: -[CH 2-CH(C 6 H 5)] n-, so the repeat unit is -[CH 2-CH(C 6 H 5)]-. Condensation polymers: repeat unit and structural units
The growing chains can add across the double bonds of rubber molecules forming polystyrene branches. The graft copolymer is formed in a mixture with ungrafted polystyrene chains and rubber molecules. [23] As with block copolymers, the quasi-composite product has properties of both "components." In the example cited, the rubbery chains absorb ...
The contour length of a polymer chain (a big molecule consisting of many similar smaller molecules) is its length at maximum physically possible extension. [ 1 ] Contour length is equal to the product of the number of segments of polymer molecule(n) and its length(l).
In IUPAC nomenclature of chemistry, a pendant group (sometimes spelled pendent) or side group is a group of atoms attached to a backbone chain of a long molecule, usually a polymer. Pendant groups are different from pendant chains, as they are neither oligomeric nor polymeric. [2] For example, the phenyl groups are the pendant groups on a ...
Long chain branches may increase polymer strength, toughness, and the glass transition temperature (T g) due to an increase in the number of entanglements per chain. A random and short chain length between branches, on the other hand, may reduce polymer strength due to disruption of the chains' ability to interact with each other or crystallize.
It was theorized that the local relaxation of polymer chains occurs in cooperative rearranging regions (CRR) where there is a collective motion of small polymer segments (hence the name segmental mobility). They correlated the size of these cooperative regions to the configurational entropy of the system.
Ad
related to: polystyrene chain size