melting temperature


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tem·per·a·ture mid·point (Tm, tm),

the midpoint in the change in optic properties (absorbance, rotation) of a structured polymer (for example, DNA) with increasing temperature.
Synonym(s): melting temperature

melting temperature

The point in a DNA hybridisation reaction at which 50% of the nucleotides are annealed (linked) to their complement (i.e., are double-stranded), which is a function of the stringency of the hybridising conditions.
References in periodicals archive ?
The softening temperature (ST), melting temperature (MT), flowing temperature (FT) are defined as the temperatures at which the samples height decrease to 75%, 50% and 25% of the original height, respectively [11, 15].
The melting temperature before rolling is 165[degrees]C, and over 170[degrees]C after the heat treatment.
Thus, increasing pressure typically raises a material's melting temperature.
The net result is an apparent independence of the melting temperature on ethylene contents above ~12 wt % when only the peak melting temperature is recorded.
8% Si at a melting temperature of 2600F (1427G) is -75,712 calories.
As a result, the carbon begins to infiltrate the steel scrap above it, lowering the melting temperature of the steel scrap to closer to iron and reducing overall melt time;
The topsheet is made of a carded web of fibers having a first melt temperature, while the polymeric sheet has a second melting temperature and a property of shrinking under the application of heat.
6] The physical behavior and the final use properties of the blend result from a combination of the effects related to the following main factors: 1) molecular structure and chemical nature of the components; 2) blending procedure; 3) blend composition; 4) melt viscosity of the components and phase viscosity ratio; 5) conditions of crystallization (low or high undercooling - defined as the difference between the equilibrium melting temperature and the crystallization temperature), stationary-quiescent crystallization, or crystallization during flow under shear forces; 6) processing conditions; 7) adhesion between the dispersed phase and matrix: structure of interfaces; and 8) location and structure of the elastomeric phase in the blend material after crystallization.
This is not made simpler by the fact that you're molding with resin nearly twice as hot as the melting temperature of the core metal.
m] = Melting temperature at the melting peak Table 2 Temperature Profiles of the Extruder and the SR Module.
Its plasticizing barrel contains a streamlined spreader, and melting temperature is accurately controlled by a PID temperature controller which shows any deviation from setpoint for precise melt management, according to the manufacturer.
The nonwoven combines a layer of fibers with one melting temperature and a layer of polymeric film with a second melting temperature lower than the first.