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Polymer blends—2: Compatibility and thermal behaviour of blends of novolac and polyamideimide from rosin

✍ Scribed by A.K. Kundu; S.S. Ray; B. Adhikari; S. Maiti

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
292 KB
Volume
22
Category
Article
ISSN
0014-3057

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✦ Synopsis

Polymer blends were prepared from a polyamideimide synthesized from rosin with novolac. The polyamideimide was synthesized by reacting rosin maleic anhydride Diels--Alder adduct with 4,4'-diaminodiphenylmethane. The compatibility of these blends was studied by solubility parameter, heat of mixing data, solution viscosity, and Tg. It was found that there is a compatibility window ranging in composition from 40:60 to 60:40 novolac-polyamideimide. Thermal bchaviour of the blends was also investigated by TGA, DTG and DSC. The insolubility of the blends on heating to 200 and above was explained on the basis of crosslinking.

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