Premium
Influence of particle size and glassy carbon content on the thermal, mechanical, and electrical properties of PHBV /glassy carbon composites
Author(s) -
Vieira Leonardo,
Montagna Larissa Stieven,
Marini Juliano,
Passador Fabio Roberto
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49740
Subject(s) - antistatic agent , materials science , composite material , differential scanning calorimetry , crystallinity , extrusion , particle size , carbon fibers , composite number , chemical engineering , physics , layer (electronics) , engineering , thermodynamics
Glassy carbon (GC) constitutes a promising carbonaceous material that can be employed as an antistatic agent in the development of antistatic packaging used in the electronics industry. Thus, the present work aims at developing biodegradable and antistatic packaging from poly(hydroxybutyrate‐ co‐ hydroxyvalerate) (PHBV) reinforced with different GC contents (0, 0.5, 1.0, 2.5, and 5.0 wt%) and different GC particle size (<45 μm and > 75 μm) using extrusion processing. differential scanning calorimetry analysis shows that the addition of GC decreases the degree of crystallinity ( X c ) of PHBV, which can explain the reduction of its stiffness. Impedance spectroscopy results reveal that the use of GC contents greater than 2.5 wt% (GC > 75 μm) makes possible the obtainment of a material with an electrical resistivity small enough to be used in antistatic packaging. It can be concluded that GC is an interesting alternative of antistatic agent for electrically dissipative packaging.