Poly (Lactic Acid)/Ground Tire Rubber Blends Using Peroxide Vulcanization

Vulcanization and the Properties of Rubber

Rubber is composed of long stringlike polymer molecules, which are pinned together at random points by crosslinks. As the density of crosslinks is increased, the molecules get localized and the system undergoes a phase transition from a liquid to an amorphous solid state. The elastic properties of the resulting solid are very different from those of metals, and are primarily due to changes in t...

Biodegradable Polymers: Blends of Starch and Poly(lactic) Acid

Rubber friction and tire dynamics.

We propose a simple rubber friction law, which can be used, for example, in models of tire (and vehicle) dynamics. The friction law is tested by comparing numerical results to the full rubber friction theory (Persson 2006 J. Phys.: Condens. Matter 18 7789). Good agreement is found between the two theories. We describe a two-dimensional (2D) tire model which combines the rubber friction model wi...

Performance Matrix Based Contoller Tuning for Tire Vulcanization Process

Global competition today is forcing tire-manufacturing industries to implement continuous improvement systems that can reduce cost and improve product quality. Proportional-Integral-Derivative (PID) controllers play a key role in the quality of vulcanized tire. This paper presents a novel method for the performance assessment and controller tuning of temperature control loops in a tire vulcaniz...

Films of Poly (L - Lactic Acid) / Poly(Hydroxybutyrate-Co-Hydroxyvalerate) Blends: In vitro Degradation

Biocompatible and biodegradable polymers have been studied in the last few years with good clinical success in the fixation and stabilization of bone fractures. The understanding and the control of the polymeric prosthetic degradation process and the effect of its degradation products in the organism are crucial for the success of the implant. In this present work, blends of PLLA/PHBV, obtained...