Why after mixing of polylactic acid in the internal mixer its bulk colour was gray?

Pejman Heidarian @Pejman-Heidarian

14 August 2013 1 9K Report

The condition was 170 degree of C, 5 min and 60 RPM

Thanks.

Sridhar Vadahanambi

two reasons: First, your mixer might not be clean enough, secondly, thermal degradation of PLA..

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