Structure evolution in poly(ethylene terephthalate) (PET) - Multi-walled carbon nanotube (MWCNT) composite films during in-situ uniaxial deformation

被引：21

作者：

Heeley, Ellen L. ^{[1
]}

Hughes, Darren J. ^{[3
]}

Crabb, Eleanor ^{[1
]}

Kershaw, Matthew ^{[1
]}

Shebanova, Olga ^{[4
]}

Leung, Sandy ^{[2
]}

Mayoral, Beatrice ^{[5
]}

McNally, Tony ^{[2
]}

机构：

[1] Open Univ, Dept Life Hlth & Chem Sci, Walton Hall, Milton Keynes MK7 6AA, Bucks, England

[2] Univ Warwick, WMG, IINM, Coventry CV4 7AL, W Midlands, England

[3] Univ Warwick, WMG, Coventry CV4 7AL, W Midlands, England

[4] Diamond Light Source, Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxon, England

[5] Queens Univ Belfast, Sch Mech & Aerosp Engn, Belfast BT9 5AH, Antrim, North Ireland

来源：

POLYMER | 2016年 / 92卷

关键词：

Polymer multi-walled carbon nanotube composites; Small- and wide-angle X-Ray scattering (SAXS/WAXS); Crystalline morphology evolution; Nucleating agents; X-RAY-SCATTERING; INDUCED CRYSTALLIZATION; STRESS-STRAIN; NANOCOMPOSITES; CONFORMATIONS; MORPHOLOGY; SAXS/WAXS; POLYMERS;

D O I：

10.1016/j.polymer.2016.03.071

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Combined small-and wide-angle X-ray scattering (SAXS/WAXS), mechanical and thermal techniques have been used to follow the morphology evolution in a series of poly(ethylene terephthalate) (PET) multiwall carbon nanotube (MWCNT) composite films during quasi solid-state uniaxial deformation at low strain rates. Uniaxially deformed PET-MWCNT films displayed improved mechanical properties compared with unfilled PET films. SAXS/WAXS data revealed a well oriented lamellar structure for unfilled PET films. In contrast, the PET-MWCNT composites revealed a nanohybrid shish-kebab (NHSK) morphology, with reduced orientation and crystallinity. Mechanistically, this morphology development is attributed to the MWCNTs acting as shish for the epitaxial growth of PET crystallites. Furthermore, nucleation and crystal growth occurs in the PET matrix, but MWCNTs ultimately inhibit crystallite development and hinder a final lamellar structure developing. The results show unequivocally the role MWCNTs play as nanofillers, in the morphology development, thermal and mechanical properties in composite polymer films. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：239 / 249

页数：11

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