Plasticizer effect on contact with other materials

12 PLASTICIZER EFFECT ON CONTACT WITH OTHER MATERIALS 

Q4 amount plasticizer migrated after infinite time 1 thickness D difiusion coefficient t time. 

There was no evidence of plasticizer accumulation at interface between the two types of PVC and the amount of migrating plasticizer was approaching equilibrium. 

In packaging materials, exchange between the contents and the packaging material may occur because of one of the three possible processes permeation, 

There are many similar problems related to plasticizer compatibility. Plasticizer migrated from robber into polyurethane when crosslink density of polyurethane was lower. It had a sufficiently penetrable structure by molecules having sizes of penetrating 

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Plasticizer effect on contact with other materials... 

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