Polytvinyl chloride

Vinyl chloride is an industrial chemical produced in large amounts (1010 Ib/year in the United States) and is used in the preparation of poly(vinyl chloride). Polytvinyl chloride), often called simply vinyl, has many applications, including siding for houses, wall coverings, and PVC piping. 

Fig. 1. Diffusivities of penetrants in rigid (A) and plasticized ( ) polytvinyl chloride) versus molecular diameter at 30°C...

Physical Stabilization Process. Cellular polystyrene, the outstanding example polytvinyl chloride) copolymers of styrene and acrylonitrile (SAN copolymers) and polyethylene can be manufactured by this process, Chemical Stabilization Processes. This method is more versatile and thus has been used successfully for more materials than the physical stabilization process. Chemical stabilization is more adaptable for condensation polymers than for vinyl polymers because of the fast yet controllable curing reactions and the absence of atmospheric inhibition. Foamed plastics produced by these processes include polyurethane foams, polyisocyanurates. and polyphenols. 

The MABS copolymers are prepared by dissolving or dispersing polybuiadiene rubber in a methyl methacrylate—acrylonitrile—styrene monomer mixture. MBS polymers are prepared by grafting methyl methacrylate and styrene onto a styrene—butadiene rubber in an emulsion process. The product is a two-phase polymer useful as an impact modifier for rigid polytvinyl chloride). 

Figure 11-17. Tensile strength (t, elongation at break and glass-transition temperature Tg polytvinyl chloride) with diflerent parts by weight of tricresyl phosphate ivrcr (after R. S. Spencer and K. F. Boyer).

PVC Polytvinyl chloride) Shampoo bottles, pipes, shower curtains, vinyl siding, wire insulation, floor files, credit cards Plastic floor mats... 

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