𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Improving the Thermal Behavior of Poly(propylene) by Addition of Spherical Silica Nanoparticles

✍ Scribed by Humberto Palza; Rodrigo Vergara; Paula Zapata

Book ID
102488394
Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
282 KB
Volume
295
Category
Article
ISSN
1438-7492

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Spherical silica nanoparticles were mixed with a PP matrix and the thermal behavior of the nanocomposites was studied. The nanocomposites presented drastic improvements in the degradation behavior under thermo‐oxidative conditions, showing complex multistep processes. Under inert conditions the improvements were lower. Our results indicate that mechanisms based on the labyrinth effect, nanoconfinement or trapping model, are not able to explain the whole enhanced thermal stability in these nanocomposites. Moreover, the high specific area of the nanoparticles (β‰ˆ70 m^2^ · g^βˆ’1^) indicates that processes based on the adsorption of volatile polar products coming from the oxidative degradation mechanism are plausible.

magnified image

πŸ“œ SIMILAR VOLUMES

Dramatic Improvements in Mechanical Prop
Dramatic Improvements in Mechanical Properties of Poly(L-lactide)/Silica Nanocomposites by Addition of Hyperbranched Poly(ester amide)
✍ Xin Wen; Ying Lin; Changyu Han; Lijing Han; Yuesheng Li; Lisong Dong πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons 🌐 English βš– 250 KB

## Abstract Biodegradable hyperbranched poly(ester amide) (HBP) was used as a compatibilizer to modify PLA/SiO~2~ nanocomposites for the first time. The ternary composites displayed dramatically improved mechanical properties including excellent toughness and fairly high stiffness. TEM images revea