Batch foaming of ultra-high molecular weight polyethylene with supercritical carbon dioxide: Influence of temperature and pressure

This work is aimed at studying the foaming behavior of pure ultra-high molecular weight polyethylene (UHMWPE) with supercritical carbon dioxide (scCO2). The effects of foaming temperature and saturation pressure on the final foam structure were investigated by using two different one-step batch foam...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Jie Liu, Shengxue Qin, Giulong Wang, Hongbin Zhang, Haiping Zhou, Yang Gao
Formato: article
Lenguaje:EN
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://doaj.org/article/e23730b53432451c89423be651826df3
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:e23730b53432451c89423be651826df3
record_format dspace
spelling oai:doaj.org-article:e23730b53432451c89423be651826df32021-11-24T04:25:29ZBatch foaming of ultra-high molecular weight polyethylene with supercritical carbon dioxide: Influence of temperature and pressure0142-941810.1016/j.polymertesting.2020.106974https://doaj.org/article/e23730b53432451c89423be651826df32021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0142941820322030https://doaj.org/toc/0142-9418This work is aimed at studying the foaming behavior of pure ultra-high molecular weight polyethylene (UHMWPE) with supercritical carbon dioxide (scCO2). The effects of foaming temperature and saturation pressure on the final foam structure were investigated by using two different one-step batch foaming processes. An in-situ high-pressure observing system was used to record the crystal change of UHMWPE film during heating and cooling stages with/without pressurized CO2. The results showed that the cell size and the cell density were affected by the combined effects of crystal, temperature, and pressure. Experimental results with different foaming temperatures showed that higher foaming temperatures led to larger cells and lower cell densities. In the processes of foaming during the heating stage (Proc1) and cooling stage (Proc2), the expansion ratio increased first and then decreased with the increase of temperature. Before obtaining the maximum expansion ratio, compare with Proc2, the cell size and expansion ratio of foams were smaller, and the cell density was higher in Proc1. Experimental results with different saturation pressures showed that higher pressure led to lower cell density and larger average cell diameter in Proc1 due to the reduction of crystals and melt strength. While in Proc2, higher saturation pressure led to higher cell density due to the increase of solubility of CO2, and the cell density decreased as the pressure further increased due to cell coalescence.Jie LiuShengxue QinGiulong WangHongbin ZhangHaiping ZhouYang GaoElsevierarticleUHMWPEBatch foamingIn-situ high-pressure observing systemPolymers and polymer manufactureTP1080-1185ENPolymer Testing, Vol 93, Iss , Pp 106974- (2021)
institution DOAJ
collection DOAJ
language EN
topic UHMWPE
Batch foaming
In-situ high-pressure observing system
Polymers and polymer manufacture
TP1080-1185
spellingShingle UHMWPE
Batch foaming
In-situ high-pressure observing system
Polymers and polymer manufacture
TP1080-1185
Jie Liu
Shengxue Qin
Giulong Wang
Hongbin Zhang
Haiping Zhou
Yang Gao
Batch foaming of ultra-high molecular weight polyethylene with supercritical carbon dioxide: Influence of temperature and pressure
description This work is aimed at studying the foaming behavior of pure ultra-high molecular weight polyethylene (UHMWPE) with supercritical carbon dioxide (scCO2). The effects of foaming temperature and saturation pressure on the final foam structure were investigated by using two different one-step batch foaming processes. An in-situ high-pressure observing system was used to record the crystal change of UHMWPE film during heating and cooling stages with/without pressurized CO2. The results showed that the cell size and the cell density were affected by the combined effects of crystal, temperature, and pressure. Experimental results with different foaming temperatures showed that higher foaming temperatures led to larger cells and lower cell densities. In the processes of foaming during the heating stage (Proc1) and cooling stage (Proc2), the expansion ratio increased first and then decreased with the increase of temperature. Before obtaining the maximum expansion ratio, compare with Proc2, the cell size and expansion ratio of foams were smaller, and the cell density was higher in Proc1. Experimental results with different saturation pressures showed that higher pressure led to lower cell density and larger average cell diameter in Proc1 due to the reduction of crystals and melt strength. While in Proc2, higher saturation pressure led to higher cell density due to the increase of solubility of CO2, and the cell density decreased as the pressure further increased due to cell coalescence.
format article
author Jie Liu
Shengxue Qin
Giulong Wang
Hongbin Zhang
Haiping Zhou
Yang Gao
author_facet Jie Liu
Shengxue Qin
Giulong Wang
Hongbin Zhang
Haiping Zhou
Yang Gao
author_sort Jie Liu
title Batch foaming of ultra-high molecular weight polyethylene with supercritical carbon dioxide: Influence of temperature and pressure
title_short Batch foaming of ultra-high molecular weight polyethylene with supercritical carbon dioxide: Influence of temperature and pressure
title_full Batch foaming of ultra-high molecular weight polyethylene with supercritical carbon dioxide: Influence of temperature and pressure
title_fullStr Batch foaming of ultra-high molecular weight polyethylene with supercritical carbon dioxide: Influence of temperature and pressure
title_full_unstemmed Batch foaming of ultra-high molecular weight polyethylene with supercritical carbon dioxide: Influence of temperature and pressure
title_sort batch foaming of ultra-high molecular weight polyethylene with supercritical carbon dioxide: influence of temperature and pressure
publisher Elsevier
publishDate 2021
url https://doaj.org/article/e23730b53432451c89423be651826df3
work_keys_str_mv AT jieliu batchfoamingofultrahighmolecularweightpolyethylenewithsupercriticalcarbondioxideinfluenceoftemperatureandpressure
AT shengxueqin batchfoamingofultrahighmolecularweightpolyethylenewithsupercriticalcarbondioxideinfluenceoftemperatureandpressure
AT giulongwang batchfoamingofultrahighmolecularweightpolyethylenewithsupercriticalcarbondioxideinfluenceoftemperatureandpressure
AT hongbinzhang batchfoamingofultrahighmolecularweightpolyethylenewithsupercriticalcarbondioxideinfluenceoftemperatureandpressure
AT haipingzhou batchfoamingofultrahighmolecularweightpolyethylenewithsupercriticalcarbondioxideinfluenceoftemperatureandpressure
AT yanggao batchfoamingofultrahighmolecularweightpolyethylenewithsupercriticalcarbondioxideinfluenceoftemperatureandpressure
_version_ 1718416007735803904