polycondensation वाक्य
उदाहरण वाक्य
मोबाइल
- Nylon 66 is synthesised by polycondensation of hexamethylenediamine and adipic acid.
- In a second step polycondensation is done to make nylon TMDT.
- In manufacturing processes by polycondensation a high purity of the starting materials is important.
- The average chain length of a particular batch of resin can be controlled during polycondensation.
- The first time, Smith et al . showed the polycondensation of bisphenols with PFCAs.
- It is necessary to hold the growing polymer chain in solution in the course of the polycondensation process.
- Water removal by application of a vacuum or by azeotropic distillation is crucial to favor polycondensation over transesterification.
- Subsequent thermal treatment ( firing ) may be performed in order to favor further polycondensation and enhance mechanical properties.
- A Rs57-crore backward integration polycondensation project, which was also to be part funded by ICICI, was put on hold.
- During surfactant-mediated synthesis, hydrolysis and polycondensation, or co-condensation, are used to fuse precursor molecules in a framework.
- Some other less common polymerization include radiation-induced polymerization, ring-opening olefin metathesis polymerization, polycondensation reactions, and iniferter-induced polymerization.
- Thereafter, polycondensation is done in the melt or as a solution, where short oligomeric units are combined to give a high molecular weight polymer strand.
- Polycondensation of glycolic acid is the simplest process available to prepare PGA, but it is not the most efficient because it yields a low molecular weight product.
- After 24h, the resulting purple film grows out from the liquid through the hydrolysis and polycondensation occurring in the reaction environment at the air / liquid and film / liquid boundary.
- More specialized techniques include sol-gel processing ( hydrolysis and polycondensation of metal alkoxides ), and combustion ( flame ) synthesis, which are rapid, non-solution phase pathways.
- Afterward, a thermal treatment, or firing process, is often necessary in order to favor further polycondensation and enhance mechanical properties and structural stability via final sintering, densification, and grain growth.
- In polycondensation small molecules are formed ( in this case of ethanol ), which have to be removed from the equilibrium to achieve the necessary molar mass of the polymer for the use as an implant material.
- Afterwards, a thermal treatment, or "'firing "'process, is often necessary in order to favor further polycondensation and enhance mechanical properties and structural stability via final sintering, densification and grain growth.
- A unique class of aromatic ether polymers containing perfluorocyclopentenyl ( PFCP ) enchainment was prepared from the simple step growth polycondensation of commercial available bisphenols and octafluorocyclopentene ( OFCP ) in the presence of triethylamine ( Scheme 3 and 4 ).
- Chain growth polycondensation polymerizations were initially developed under the premise that a change in substituent effects of the polymer, relative to the monomer, causes the polymers end group to be more reactive this has been referred to as reactive intermediate polycondensation .
- अधिक वाक्य: 1 2
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