The amorphous polymer in solid form called glassy state. In this state of solid polymer, a bolha mo

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Polymer compounds that are in their molecules composed of groups of atoms joined together by chemical bonds form a long chain and high molecular weight. In the main artery of the polymer, the groups of atoms are repeated many times.
For example: HDPE weight average molecular weight M = 25,000, molecular weight chains m = 28 basis
- Thermoplastic: the group of polymeric a bolha materials is important in the synthesis of polymers, including polymers have a certain size, straight chain or branched. No! solid state can transfer to plastic a bolha state by the increase in temperature and a reversible process, can repeated many times. Thus, for thermoplastics can be recycled (except PTFE, polytetraflouroethylene). For example: PE, PP, PVC, PS, PMMA, ...
- Rubber, elastomers: is the linear polymer with binding force is very weak secondary materials in the form of a viscous liquid. To use, to the cross-linking between the molecular circuitry to create a three-dimensional network. Characteristic of rubber is that it is capable of up to 1,000% elongation (vulcanized natural rubber). However, due to cross-linking, it can not regenerate.
- Thermoset Plastics: dense crosslinked density, higher by 10 to 1,000 times compared to rubber. Thermosetting resin to create a three-dimensional network of polymer, extremely large in size compared to the atom, nature is very high compared to thermoplastics, particularly heat resistant, thermoplastic outside the insoluble solid , not flow nor renewable. For example, PF, PU, epoxy resin, silicone, ...
Road molecular weight distribution, also known as the dispersion of molecular weight, characteristic distribution of molecular weight (the uneven) have important practical implications for many physical properties of the polymer.
The crystalline volume ratio of crystalline regions in the entire volume of the sample material
In contrast, a high crystallization temperature of crystal nucleation will be less due to pre crystals are smaller than the minimum size will be broken by thermal motion, but the crystals will develop a favorable environment due to viscosity should lower the crystalline regions will be larger than the above case.
In its soft state, the polymer is capable of reversible deformation under the effect of external forces negligible. High soft state is seen as a state of physical characteristics of the polymer and only exists in polymeric materials.
At the high soft state of the polymer, a bolha the molecular chains of large flexibility to easily change a bolha shape arrangement. When the polymer cooled rapidly, due to the recovery time of the chain increases several times to change the morphology of the circuit arrangement of polymers and polymer crystallization a bolha process difficult. In a certain temperature range polymer hardens to form a network without the crystal is called the glass transition of polymers.
When the temperature a bolha is lower than the glass transition temperature (Tg), the polymer shows the properties of solid materials. Energy relevant interactions between molecules does not depend on temperature or little dependency. Thermal motion, the energy decreased as the temperature decreased. a bolha At very low temperatures, this energy is not sufficient to overcome the interactive effects of intrinsic a bolha and forces acting between the molecules forming the local horizontal joints to increase the viscosity of the polymer and the possibility a bolha of thermal motion of the chain decreases, meaning that increasing the stiffness of the polymer.
The amorphous polymer in solid form called glassy state. In this state of solid polymer, a bolha most transparent and brittle like glass. Thus the status of the cooling polymer crystallization but could not lose fluidity called glassy a bolha state. Polymer in the glassy state is also known as organic glass.
The transition state of the polymer can be determined by observing the change in strain when the temperature changes. The same polymer a bolha when heated or cooled, it can move from this state to another state. The polymer molecules when heated will change from glassy state to a high soft state. If heated further turns viscous liquid state. And then, if it continues to heat the polymer will begin to break down into smaller vessels.
Street performers dependence on temperature deformation a bolha curve called a heat engine. For amorphous linear polymer with high molecular weight, body temperature curve is divided into three sections corresponding to three physical states.
The average temperature in the range of developmental