Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Time and Spatially Resolved Operando Small-Angle X-ray Scattering Measurements during Injection Moulding of Plastics

Geoffrey R. Mitchell
* ,
Matteo Arioli
ORCID logo ,
Anabela Pavia Massano
,
Daniel Pedra Da Silva
,
Fabio A. Gameiro
ORCID logo ,
Pedro Carreira
,
Marc Malfois
ORCID logo ,
Joao Matias
,
Paula Christina Pascoal-Faria
ORCID logo ,
Artur Mateus
Version 1 : Received: 14 August 2023 / Approved: 15 August 2023 / Online: 15 August 2023 (15:50:00 CEST)

A peer-reviewed article of this Preprint also exists.

Arioli, M.; Massano, A.P.; da Silva, D.P.; Gameiro, F.A.; Carreira, P.; Malfois, M.; Matias, J.; Pascoal-Faria, P.; Mateus, A.; Mitchell, G.R. Time and Spatially Resolved Operando Small-Angle X-ray Scattering Measurements during Injection Moulding of Plastics. J. Manuf. Mater. Process. 2023, 7, 176. Arioli, M.; Massano, A.P.; da Silva, D.P.; Gameiro, F.A.; Carreira, P.; Malfois, M.; Matias, J.; Pascoal-Faria, P.; Mateus, A.; Mitchell, G.R. Time and Spatially Resolved Operando Small-Angle X-ray Scattering Measurements during Injection Moulding of Plastics. J. Manuf. Mater. Process. 2023, 7, 176.

Abstract

We have recently introduced the possibility of performing operando small-angle X-ray scattering measurements using a novel industrially relevant injection moulding system for plastics. We show that useful time-resolving measurements can be performed with a time-cycle of 1s and we highlight the possible steps to reduce this to 0.5s. We show how we can use the transmission measurements to provide a time-marker when plastic first enters the mould cavity in the region probed by the incident X-ray beam. We show the opportunities provided by this experimental stage mounted on the NCD-SWEET beamline at ALBA to probe the reproducibility of the injection moulding system on different scales. The design of the equipment allows the development of the structure and the morphology to be evaluated in different parts of mould cavity and we evaluate any differences in a rectangular mould cavity. We identify future prospects for this equipment in terms of novel mould heating and cooling systems and the opportunities for quantitatively evaluating radical approaches to injection moulding technology.

Keywords

injection moulding; small-angle X-ray scattering; morphology; isotactic polypropylene

Subject

Engineering, Industrial and Manufacturing Engineering

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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