Insights on the Molecular Behavior of Polypropylene in the Process of Ultrasonic Injection Molding

Product miniaturization is a constant trend in industries that demand ever-smaller products that can be mass produced while maintaining high precision dimensions in the final pieces. Ultrasonic micro injection molding (UMIM) technology has emerged as a polymer processing technique capable of achievi...

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Autores principales:	Jackeline Iturbe-Ek, Alan O. Sustaita, Diego Aguilar-Viches, José Manuel Mata-Padilla, Carlos A. Ávila-Orta, Luis E. Elizalde, Alex Elías-Zúñiga, Luis Marcelo Lozano
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ultrasonic injection molding polypropylene product miniaturization molecular characterization Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/bc1e719d85d641cfa7f3060c1b319683
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spelling	oai:doaj.org-article:bc1e719d85d641cfa7f3060c1b3196832021-11-25T18:49:20ZInsights on the Molecular Behavior of Polypropylene in the Process of Ultrasonic Injection Molding10.3390/polym132240102073-4360https://doaj.org/article/bc1e719d85d641cfa7f3060c1b3196832021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/4010https://doaj.org/toc/2073-4360Product miniaturization is a constant trend in industries that demand ever-smaller products that can be mass produced while maintaining high precision dimensions in the final pieces. Ultrasonic micro injection molding (UMIM) technology has emerged as a polymer processing technique capable of achieving the mass production of polymeric parts with micro-features, while still assuring replicability, repeatability, and high precision, contrary to the capabilities of conventional processing technologies of polymers. In this study, it is shown that the variation of parameters during the UMIM process, such as the amplitude of the ultrasound waves and the processing time, lead to significant modification on the molecular structure of the polymer. The variation of both the amplitude and processing time contribute to chain scission; however, the processing time is a more relevant factor for this effect as it is capable of achieving a greater chain scission in different areas of the same specimen. Further, the presence of polymorphism within the samples produced by UMIM is demonstrated. Similarly to conventional processes, the UMIM technique leads to some degree of chain orientation, despite the fact that it is carried out in a relatively small time and space. The results presented here aim to contribute to the optimization of the use of the UMIM process for the manufacture of polymeric micro parts.Jackeline Iturbe-EkAlan O. SustaitaDiego Aguilar-VichesJosé Manuel Mata-PadillaCarlos A. Ávila-OrtaLuis E. ElizaldeAlex Elías-ZúñigaLuis Marcelo LozanoMDPI AGarticleultrasonic injection moldingpolypropyleneproduct miniaturizationmolecular characterizationOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 4010, p 4010 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ultrasonic injection molding polypropylene product miniaturization molecular characterization Organic chemistry QD241-441
spellingShingle	ultrasonic injection molding polypropylene product miniaturization molecular characterization Organic chemistry QD241-441 Jackeline Iturbe-Ek Alan O. Sustaita Diego Aguilar-Viches José Manuel Mata-Padilla Carlos A. Ávila-Orta Luis E. Elizalde Alex Elías-Zúñiga Luis Marcelo Lozano Insights on the Molecular Behavior of Polypropylene in the Process of Ultrasonic Injection Molding
description	Product miniaturization is a constant trend in industries that demand ever-smaller products that can be mass produced while maintaining high precision dimensions in the final pieces. Ultrasonic micro injection molding (UMIM) technology has emerged as a polymer processing technique capable of achieving the mass production of polymeric parts with micro-features, while still assuring replicability, repeatability, and high precision, contrary to the capabilities of conventional processing technologies of polymers. In this study, it is shown that the variation of parameters during the UMIM process, such as the amplitude of the ultrasound waves and the processing time, lead to significant modification on the molecular structure of the polymer. The variation of both the amplitude and processing time contribute to chain scission; however, the processing time is a more relevant factor for this effect as it is capable of achieving a greater chain scission in different areas of the same specimen. Further, the presence of polymorphism within the samples produced by UMIM is demonstrated. Similarly to conventional processes, the UMIM technique leads to some degree of chain orientation, despite the fact that it is carried out in a relatively small time and space. The results presented here aim to contribute to the optimization of the use of the UMIM process for the manufacture of polymeric micro parts.
format	article
author	Jackeline Iturbe-Ek Alan O. Sustaita Diego Aguilar-Viches José Manuel Mata-Padilla Carlos A. Ávila-Orta Luis E. Elizalde Alex Elías-Zúñiga Luis Marcelo Lozano
author_facet	Jackeline Iturbe-Ek Alan O. Sustaita Diego Aguilar-Viches José Manuel Mata-Padilla Carlos A. Ávila-Orta Luis E. Elizalde Alex Elías-Zúñiga Luis Marcelo Lozano
author_sort	Jackeline Iturbe-Ek
title	Insights on the Molecular Behavior of Polypropylene in the Process of Ultrasonic Injection Molding
title_short	Insights on the Molecular Behavior of Polypropylene in the Process of Ultrasonic Injection Molding
title_full	Insights on the Molecular Behavior of Polypropylene in the Process of Ultrasonic Injection Molding
title_fullStr	Insights on the Molecular Behavior of Polypropylene in the Process of Ultrasonic Injection Molding
title_full_unstemmed	Insights on the Molecular Behavior of Polypropylene in the Process of Ultrasonic Injection Molding
title_sort	insights on the molecular behavior of polypropylene in the process of ultrasonic injection molding
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/bc1e719d85d641cfa7f3060c1b319683
work_keys_str_mv	AT jackelineiturbeek insightsonthemolecularbehaviorofpolypropyleneintheprocessofultrasonicinjectionmolding AT alanosustaita insightsonthemolecularbehaviorofpolypropyleneintheprocessofultrasonicinjectionmolding AT diegoaguilarviches insightsonthemolecularbehaviorofpolypropyleneintheprocessofultrasonicinjectionmolding AT josemanuelmatapadilla insightsonthemolecularbehaviorofpolypropyleneintheprocessofultrasonicinjectionmolding AT carlosaavilaorta insightsonthemolecularbehaviorofpolypropyleneintheprocessofultrasonicinjectionmolding AT luiseelizalde insightsonthemolecularbehaviorofpolypropyleneintheprocessofultrasonicinjectionmolding AT alexeliaszuniga insightsonthemolecularbehaviorofpolypropyleneintheprocessofultrasonicinjectionmolding AT luismarcelolozano insightsonthemolecularbehaviorofpolypropyleneintheprocessofultrasonicinjectionmolding
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Insights on the Molecular Behavior of Polypropylene in the Process of Ultrasonic Injection Molding

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