Neutron Diffraction from Polymers and Other Soft Matter

Mitchell, Geoffrey R.

doi:10.1002/9780470933886.ch21

Cited by 2 publications

(1 citation statement)

References 49 publications

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“…There are other semi-crystalline polymers that are based on C, H, O, and N, and whose X-ray absorption coefficients will be similar to polypropylene and present no problems. Chlorinated polymers, such as polyvinylchloride, will be more challenging, as the WAXS is dominated by the higher atomic number Cl atoms [35]. The additional absorption due the high chorine content will reduce the signal-to-noise ratio and may require a thinner part, making it less representative of industrial practice.…”

Section: Discussionmentioning

confidence: 99%

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

Arioli,

Massano,

da Silva

et al. 2023

JMMP

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We 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 1 s and highlight the possible steps to reduce this to 0.5 s. 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 allowed for the development of the structure and the morphology to be evaluated in different parts of mould cavity, and we evaluated any differences in a rectangular mould cavity. We identified 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.

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Section: Discussionmentioning

confidence: 99%

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

Arioli,

Massano,

da Silva

et al. 2023

JMMP

View full text Add to dashboard Cite

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Numerical Thermal Analysis of a T Jump System Used for Studying Polymer Behaviour

Gomes

Pascoal‐Faria

Mitchell

et al. 2019

AMM

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The processing of polymers is highly complex. The study of their crystallisation assumes an important role and needs to be carefully detailed. Scattering experiments can be used to study polymer molecular organisation. However these procedures are still very multifaceted leading to the need for planning all the details in the experiments that are to be performed. This manuscript presents a finite element model developed to study the temperature variation of a T Jump System, which has been used for studying polymer behaviour with the NIMROD instrument at the ISIS Neutron and Muon Source, UK. Results show that the variation across the sample was 2oC at a maximum temperature of 70oC and 1oC at a maximum temperature of 50oC.

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Neutron Diffraction from Polymers and Other Soft Matter

Cited by 2 publications

References 49 publications

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

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

Numerical Thermal Analysis of a T Jump System Used for Studying Polymer Behaviour

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