dispersity वाक्य
उदाहरण वाक्य
मोबाइल
- Ideal step-growth polymerization gives a polymer with dispersity of 2.
- Ideal living polymerization results in a dispersity of 1.
- The table below shows the dispersity of Indian people in the United Kingdom.
- In this sense, the dispersity values are in the range from 0 to 1.
- Several methods offer better control over dispersity.
- This can necessitate harsh reaction conditions and long reaction times, resulting in a wide dispersity.
- Another interpretation of dispersity is explained in the article Dynamic light scattering ( cumulant method subheading ).
- For a homogeneous CSTR, the dispersity is proportional to the square root of the Damkohler number.
- This depends on the polymer endgroups, dispersity, or in the case of copolymers varying copolymer compositions.
- Since molecular weight and dispersity are less controlled in non-living polymerizations, this method is more desirable for materials design
- As a result, the dispersity of the reactor lies between that of a batch and that of a homogeneous CSTR.
- Dispersity ( ) or polydispersity index ( PDI ) is an indication of the broadness in the distribution of polymer chains.
- The effects of reactor type on dispersity depend largely on the relative timescales associated with the reactor, and with the polymerization type.
- In conventional bulk free radical polymerization, the dispersity is often controlled by the proportion of chains that terminate via combination or disproportionation.
- As a result, reactor type does not affect dispersity for free radical polymerization reactions in any noticeable amount as long as conversion is low.
- Thus, for the similar reasons as anionic polymerization, the dispersity for heterogeneous CSTRs lies between that of a batch and a homogeneous CSTR.
- The use of low dispersity standards allows the user to correlate retention time with molecular mass, although the actual correlation is with the Hydrodynamic volume.
- When introduced into a CSTR however, the residence time distribution for reactants in the CSTR affects the dispersity of the anionic polymer due to the anion lifetime.
- Such is the case also in biological polymers, where the dispersity can be very close or equal to 1, indicating only one length of polymer is present.
- By dissolving a polymer an insoluble high molar mass fraction may be filtered off resulting in a large reduction in M m and a small reduction in M n thus reducing dispersity.
- अधिक वाक्य: 1 2
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