The Tg of my sample is approax -77 degree celcious . I want to increase the Tg to atleast room temperature. I s possible by adding exceipients like poly vinyl pyrrolidone?
Tg is an inherent properity of a material. Changing the Tg means changing the substance. Miscible liquids can provide a new Tg but the properties are strongly influenced. To increase the Tg in such extent as you want means you will get an completely new material.