Method of preparing vinyl chloride-based polymer composite, vinyl chloride-based polymer composite, and vinyl chloride-based polymer composite composition including the composite

A method of preparing a vinyl chloride-based polymer composite, comprising:

• a first step of performing a bulk polymerization of vinyl chloride-based monomers;
• and
• a second step of recovering unreacted vinyl chloride-based monomers after completion of the bulk polymerization;
• and
• obtaining the vinyl chloride-based polymer composite, wherein polyvinyl alcohol is added in at least one step of the first step and the second step, and
• the polyvinyl alcohol is added in an amount of 0.003 parts by weight to 0.500 parts by weight based on a total of 100 parts by weight of the vinyl chloride-based monomers,
• wherein the vinyl chloride-based monomer is a pure vinyl chloride monomer or a monomer mixture including the pure vinyl chloride monomer and a vinyl-based monomer copolymerizable with the pure vinyl chloride monomer,
• wherein the monomer mixture includes the vinyl-based monomer in an amount of 1 to 50 parts by weight based on 100 parts by weight of the vinyl chloride monomer,
• wherein the polyvinyl alcohol has a degree of hydrolysis of 90 mol % to 99 mol %.