Micro-to-nano scale filling behavior of PMMA during imprinting

Abstract The filling behavior of polymers in narrow gaps or small pores is important for the dynamics of polymeric micro/nanostructure fabrication. Here, the filling behavior, the mechanical properties, and the stress versus strain relationship of 996 kD poly (methyl methacrylate) (PMMA) at a scale...

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Autores principales:	Jingmin Li, Ziyang Liu, Chao Liang, Xia Li, Jinguang Fan, Hao Zhang, Chong Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/57fb8fd8f80342b5a6cf705ae19b715c
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spelling	oai:doaj.org-article:57fb8fd8f80342b5a6cf705ae19b715c2021-12-02T16:06:59ZMicro-to-nano scale filling behavior of PMMA during imprinting10.1038/s41598-017-08409-92045-2322https://doaj.org/article/57fb8fd8f80342b5a6cf705ae19b715c2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08409-9https://doaj.org/toc/2045-2322Abstract The filling behavior of polymers in narrow gaps or small pores is important for the dynamics of polymeric micro/nanostructure fabrication. Here, the filling behavior, the mechanical properties, and the stress versus strain relationship of 996 kD poly (methyl methacrylate) (PMMA) at a scale from micron to molecular confinement are measured. It has been found that the solid polymer exhibits elastic-plastic dominant deformation behavior at micron scale. As the scale reduces to submicron, the resistance to deformation of the polymeric solid has a pronounced reduction. A softening effect and the visco-dominant behavior which is always exhibited by melt flow is observed. In confinement conditions, an anomalous hardening effect is found. The modulus and the hardness of 996 kD PMMA have been found to increase dramatically. The stress-strain curve also exhibits an obvious hardening phenomenon which is contrary to the conventional shear thinning and deformation acceleration results. The results of this paper show that the PMMA can exhibit a change of “solid-fluid-solid” in mechanical character at micron to molecular confinement scale.Jingmin LiZiyang LiuChao LiangXia LiJinguang FanHao ZhangChong LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jingmin Li Ziyang Liu Chao Liang Xia Li Jinguang Fan Hao Zhang Chong Liu Micro-to-nano scale filling behavior of PMMA during imprinting
description	Abstract The filling behavior of polymers in narrow gaps or small pores is important for the dynamics of polymeric micro/nanostructure fabrication. Here, the filling behavior, the mechanical properties, and the stress versus strain relationship of 996 kD poly (methyl methacrylate) (PMMA) at a scale from micron to molecular confinement are measured. It has been found that the solid polymer exhibits elastic-plastic dominant deformation behavior at micron scale. As the scale reduces to submicron, the resistance to deformation of the polymeric solid has a pronounced reduction. A softening effect and the visco-dominant behavior which is always exhibited by melt flow is observed. In confinement conditions, an anomalous hardening effect is found. The modulus and the hardness of 996 kD PMMA have been found to increase dramatically. The stress-strain curve also exhibits an obvious hardening phenomenon which is contrary to the conventional shear thinning and deformation acceleration results. The results of this paper show that the PMMA can exhibit a change of “solid-fluid-solid” in mechanical character at micron to molecular confinement scale.
format	article
author	Jingmin Li Ziyang Liu Chao Liang Xia Li Jinguang Fan Hao Zhang Chong Liu
author_facet	Jingmin Li Ziyang Liu Chao Liang Xia Li Jinguang Fan Hao Zhang Chong Liu
author_sort	Jingmin Li
title	Micro-to-nano scale filling behavior of PMMA during imprinting
title_short	Micro-to-nano scale filling behavior of PMMA during imprinting
title_full	Micro-to-nano scale filling behavior of PMMA during imprinting
title_fullStr	Micro-to-nano scale filling behavior of PMMA during imprinting
title_full_unstemmed	Micro-to-nano scale filling behavior of PMMA during imprinting
title_sort	micro-to-nano scale filling behavior of pmma during imprinting
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/57fb8fd8f80342b5a6cf705ae19b715c
work_keys_str_mv	AT jingminli microtonanoscalefillingbehaviorofpmmaduringimprinting AT ziyangliu microtonanoscalefillingbehaviorofpmmaduringimprinting AT chaoliang microtonanoscalefillingbehaviorofpmmaduringimprinting AT xiali microtonanoscalefillingbehaviorofpmmaduringimprinting AT jinguangfan microtonanoscalefillingbehaviorofpmmaduringimprinting AT haozhang microtonanoscalefillingbehaviorofpmmaduringimprinting AT chongliu microtonanoscalefillingbehaviorofpmmaduringimprinting
_version_	1718384776227848192

Micro-to-nano scale filling behavior of PMMA during imprinting

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