Polyvinyl Alcohol/PVA->Polyvinyl Alcohol

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Tianjin Fu Tai Ying Xin Chemical Co., Ltd

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Polyvinyl Alcohol/PVA

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Chemicals->chemical material->Polyvinyl Alcohol

Product Specification

Model No:	Polyvinyl Alcohol/PVA

Country	CN

Product Detail

Product Description: Polyvinyl alcohol (PVOH, PVA, or PVAL) is a water-soluble synthetic polymer (not to be confused with polyvinyl acetate, a popular wood glue). Product Feature: Polyvinyl alcohol has excellent film forming, emulsifying, and adhesive properties. It is also resistant to oil, grease and solvent. It is odorless and nontoxic. It has high tensile strength and flexibility, as well as high oxygen and aroma barrier properties. However these properties are dependent on humidity, in other words, with higher humidity more water is absorbed. The water, which acts as a plasticiser, will then reduce its tensile strength, but increase its elongation and tear strength. PVA is fully degradable and is a quick dissolver. PVA has a melting point of 230C and 180-190C for the fully hydrolysed and partially hydrolysed grades, respectively. It decomposes rapidly above 200C as it can undergo pyrolysis at high temperatures. PVA is an atactic material but exhibits crystallinity as the hydroxyl groups are small enough to fit into the lattice without disrupting it. Application: Preparation of polyvinyl butyral is the largest use for polyvinyl alcohol in the U. S. And western Europe. Its use as a polymerization aid is the largest market in China. In Japan the major use is vinylon fiber production


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