High‐Throughput Screening of the Influence of Thermal Treatment on the Mechanical Properties of Semicrystalline Polymers: A Case Study for iPP

Abstract

Summary: High‐throughput screening is a convenient tool to determine the influence of parameters, such as composition or processing conditions on certain materials' properties. In the present study, iPP was used to construct a combinatorial library made from a processing temperature gradient requiring only a minimised amount of material. Clear changes in the crystalline modification and crystal morphology of the iPP, and their impact on mechanical properties have been identified.The construction of a combinatorial library to study the effect of thermal history upon the properties of polymers.magnified imageThe construction of a combinatorial library to study the effect of thermal history upon the properties of polymers.

Preparation by melt mixing and characterization of isotactic polypropylene/SiO2 nanocomposites containing untreated and surface‐treated nanoparticles

“…These different iPP modifications were easily detected from differential scanning calorimetry (DSC). Schneider et al observed two peaks, one at about 162°C–165°C, which was attributed to the α‐polymorph of iPP, and a second peak at 151°C–54°C, which was interpreted as the melting of the β‐polymorph 54. However, in our nanocomposites the two peaks observed were close to each other, at temperatures higher than 158°C.…”

Isothermal Crystallization of Isotactic Poly(propylene) Studied by Superfast Calorimetry

“…The development of these structures is critically dependent upon crystallization conditions and pressure and has a great impact on the mechanical properties as it has been described in detail elsewhere. [4,20,21] Therefore, a study of the structural changes due to different thermal treatments (high and low cooling rates) of iPP and an iPP/HR 90/10 blend was also performed using WAXS and is reported here.…”

Combinatorial polymer research and high-throughput experimentation: powerful tools for the discovery and evaluation of new materials

“…Recently, mechanical properties of a combinatorial library of differently thermally treated isotactic poly(propylene) (iPP) were investigated. 84 First, the libraries were created utilizing a temperature gradient plate apparatus in a disc-shaped form by cooling from melt to room temperature applying different temperature gradients. Subsequently, the samples were investigated by wide angle X-ray scattering (WAXS) to characterize the changes in crystalline morphology originating from the different thermal treatments.…”