Eugenol Polysiloxane-Polycarbonate/Graphene Nanocomposite: Enhanced in Thermostability and Barrier Property

Abstract

Graphene (GR) was used to blend with eugenol polysiloxane-polycarbonate (Si-PC) copolymer to prepare a Si-PC/GR nanocomposite via a solution blending method and the impact of graphene on the properties of Si-PC/GR nanocomposite was investigated. The morphology and structure of the Si-PC/GR nanocomposite were characterized. Combining morphology and property analysis, the result showed that when the graphene dispersed uniformly in the Si-PC matrix, the mechanical properties, thermostability and barrier property of Si-PC/GR nanocomposite were enhanced. Compared with Si-PC copolymer, the pyrolytic temperature of Si-PC/2.5%GR nanocomposite at 5% weight loss was 434.3 °C, which was 20.6 °C higher than Si-PC copolymer; and the oxygen barrier value of Si-PC/1.5%GR nanocomposite decreased to 160.2 cm3/m2 24 h 0.1 MPa, which was 53.2 less than pure Si-PC. The mechanical properties of Si-PC/GR nanocomposite were enhanced with an appropriate additive amount of graphene. The hydrophobicity also had been enhanced at the meantime.

Fluorescent Carbon Dioxide-Based Polycarbonates Probe for Rapid Detection of Aniline in the Environment and Its Biomarkers in Urine

“…Among these, poly(propylene carbonate) [ 17 ] (PPC) prepared through the copolymerization of CO 2 and propylene oxide (PO) is a biodegradable polymer with a good oxygen barrier, transparency, and biocompatibility. It is widely used in food packaging [ 18 ], film materials [ 19 ], barrier materials [ 20 ], biomedical materials [ 21 ], and other fields. Despite these advantages, PPC still has some defects.…”

Fabrication and investigation of multifunctional fluorinated polysiloxane coatings with phenyl as bridging group

“…Polysiloxanes with Si O Si as the main chain are useful materials because they possess such functionalities as high thermal stability, electrical resistance, low-dielectric constant, and hydrophobicity. [1][2][3][4][5] Fluorinated polysiloxane is one of the most widely used polysiloxanes, which can be obtained by introducing fluoroalkyls on the side-chain of polysiloxanes. [6][7][8] To date, three types of synthetic methods for fluorinated polysiloxanes have been used: (1) the hydrolytic condensation of fluorocarbon functional silanes, (2) the ring-opening polymerization of cyclic siloxanes containing fluoroalkyl substituents, (3) the hydrosilylation of fluorinated olefins.…”

“…Polysiloxanes with SiOSi as the main chain are useful materials because they possess such functionalities as high thermal stability, electrical resistance, low‐dielectric constant, and hydrophobicity 1–5 . Fluorinated polysiloxane is one of the most widely used polysiloxanes, which can be obtained by introducing fluoroalkyls on the side‐chain of polysiloxanes 6–8 .…”