Coupling effects of gamma irradiation and absorbed moisture on silicone foam
The present work involves the investigation of coupling effects of gamma irradiation and absorbed moisture on silicone foam. Compression stress-strain test, creep test, differential scanning calorimetry (DSC) and swelling test were performed to analyze the properties of pristine and dewatered sample...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier
2020-10-01
|
Series: | Materials & Design |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127520305323 |
id |
doaj-1f7ffedfaf8943d7bb2b8b33e5c5787d |
---|---|
record_format |
Article |
spelling |
doaj-1f7ffedfaf8943d7bb2b8b33e5c5787d2020-11-25T03:13:18ZengElsevierMaterials & Design0264-12752020-10-01195108998Coupling effects of gamma irradiation and absorbed moisture on silicone foamPu-Cheng Wang0Na Yang1Dong Liu2Zi-Ming Qin3You An4Hong-Bing Chen5Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, ChinaCorresponding author.; Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, ChinaThe present work involves the investigation of coupling effects of gamma irradiation and absorbed moisture on silicone foam. Compression stress-strain test, creep test, differential scanning calorimetry (DSC) and swelling test were performed to analyze the properties of pristine and dewatered samples irradiated by 60Co gamma ray. Changes in the compression stress, creep elongation, melting temperature, melting enthalpy and the average molecular weight between cross-links of the dewatered samples are much more obvious than that of the pristine ones. The possible mechanism was investigated by computational study with analog molecules. It suggests that the absorbed moisture and its radiolysis species (H·/HO·) would consume part of the macromolecular radicals generated by gamma irradiation, which hinders the crosslinking reactions. This should be the main mechanism for the coupling effects of moisture and irradiation at room temperature.http://www.sciencedirect.com/science/article/pii/S0264127520305323Silicone foamRadiation effectGamma rayMoisture |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Pu-Cheng Wang Na Yang Dong Liu Zi-Ming Qin You An Hong-Bing Chen |
spellingShingle |
Pu-Cheng Wang Na Yang Dong Liu Zi-Ming Qin You An Hong-Bing Chen Coupling effects of gamma irradiation and absorbed moisture on silicone foam Materials & Design Silicone foam Radiation effect Gamma ray Moisture |
author_facet |
Pu-Cheng Wang Na Yang Dong Liu Zi-Ming Qin You An Hong-Bing Chen |
author_sort |
Pu-Cheng Wang |
title |
Coupling effects of gamma irradiation and absorbed moisture on silicone foam |
title_short |
Coupling effects of gamma irradiation and absorbed moisture on silicone foam |
title_full |
Coupling effects of gamma irradiation and absorbed moisture on silicone foam |
title_fullStr |
Coupling effects of gamma irradiation and absorbed moisture on silicone foam |
title_full_unstemmed |
Coupling effects of gamma irradiation and absorbed moisture on silicone foam |
title_sort |
coupling effects of gamma irradiation and absorbed moisture on silicone foam |
publisher |
Elsevier |
series |
Materials & Design |
issn |
0264-1275 |
publishDate |
2020-10-01 |
description |
The present work involves the investigation of coupling effects of gamma irradiation and absorbed moisture on silicone foam. Compression stress-strain test, creep test, differential scanning calorimetry (DSC) and swelling test were performed to analyze the properties of pristine and dewatered samples irradiated by 60Co gamma ray. Changes in the compression stress, creep elongation, melting temperature, melting enthalpy and the average molecular weight between cross-links of the dewatered samples are much more obvious than that of the pristine ones. The possible mechanism was investigated by computational study with analog molecules. It suggests that the absorbed moisture and its radiolysis species (H·/HO·) would consume part of the macromolecular radicals generated by gamma irradiation, which hinders the crosslinking reactions. This should be the main mechanism for the coupling effects of moisture and irradiation at room temperature. |
topic |
Silicone foam Radiation effect Gamma ray Moisture |
url |
http://www.sciencedirect.com/science/article/pii/S0264127520305323 |
work_keys_str_mv |
AT puchengwang couplingeffectsofgammairradiationandabsorbedmoistureonsiliconefoam AT nayang couplingeffectsofgammairradiationandabsorbedmoistureonsiliconefoam AT dongliu couplingeffectsofgammairradiationandabsorbedmoistureonsiliconefoam AT zimingqin couplingeffectsofgammairradiationandabsorbedmoistureonsiliconefoam AT youan couplingeffectsofgammairradiationandabsorbedmoistureonsiliconefoam AT hongbingchen couplingeffectsofgammairradiationandabsorbedmoistureonsiliconefoam |
_version_ |
1724647585605484544 |