# Can I change glass transition temperature (Tg) and impact resistance with additives?

I have three different HDPE polymers with different melting index but they don't have any elasticity. Physical form of polymers is granules. Can I change glass transition temperature (Tg) and impact resistance with additives?

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• No. Buy a suitable Polyethylene. – Karl Aug 23 '16 at 15:59

Most liquid plasticizers are low molecular weight organic materials with a glass transition temperature in the range of $125-225^0\text{C}$. When this kind of additives is added to an organic polymer, the result is a weight averaging of the glass transition temperature between that of the polymer and that of the plasticiser if they are miscible. The reduction of the the glass transition temperature of a polymer by the plasticiser is usually about $5^0\text{C}$ per weight percent of plasticiser.