Crystallization behavior of polyamide 6/halloysite nanotubes nanocomposites

被引：129

作者：

Guo, Baochun ^{[1
]}

Zou, Quanliang ^{[1
]}

Lei, Yanda ^{[1
]}

Du, Mingliang ^{[1
]}

Liu, Mingxian ^{[1
]}

Jia, Demin ^{[1
]}

机构：

[1] S China Univ Technol, Dept Polymer Mat & Engn, Guangzhou 510640, Peoples R China

来源：

THERMOCHIMICA ACTA | 2009年 / 484卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Polyamide; 6; Halloysite; Nanocomposite; Crystallization; Effective activation energy; Polymorphism; REINFORCED NYLON-6 COMPOSITES; WALLED CARBON NANOTUBES; NONISOTHERMAL CRYSTALLIZATION; ISOTHERMAL CRYSTALLIZATION; MECHANICAL-PROPERTIES; 6/MONTMORILLONITE NANOCOMPOSITES; ACTIVATION-ENERGY; MELTING BEHAVIOR; TEMPERATURE-DEPENDENCE; CRYSTAL COPOLYESTER;

D O I：

10.1016/j.tca.2008.12.003

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Non-isothermal crystallization and the polymorphism of the PA6 and the polyamide 6/halloysite nanotubes (PA6/HNTs) nanocomposites are studied by adopting differential scanning calorimetry (DSC) analysis, X-ray diffraction (XRD) analysis and polarized optical microscopy (POM) observations. HNTs act as nucleating agent and accelerate the crystallization. The kinetics analysis indicates that the fold-surface free energy of PA6/HNTs nanocomposites is larger than that of neat PA6. The increasing tendency of the fold-surface free energy of PA6/HNTs nanocomposites is restricted at higher HNTs loading. interestingly, the crystallinity of the PA6/HNTs nanocomposites increases with cooling rate. HNTs content is found to have a significant effect upon the crystallinity of the PA6/HNTs nanocomposites, and the crystallinity reaches its maximum with 5 phr of HNTs content. Moreover. the higher HNTs content is. the larger percentage gamma-phase crystals take up. The crystallization behavior of the PA6/HNTs nanocomposites is correlated with the multiple roles of HNTs in the crystallization of PA6. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：48 / 56

页数：9

共 55 条

[1]

Akkapeddi MK, 1999, ANTEC '99: PLASTICS BRIDGING THE MILLENNIA, CONFERENCE PROCEEDINGS, VOLS I-III, P1619

[2] CRYSTAL STRUCTURE OF GAMMA-FORM OF NYLON 6 [J].

ARIMOTO, H ;

ISHIBASH.M ;

HIRAI, M ;

CHATANI, Y .

JOURNAL OF POLYMER SCIENCE PART A-GENERAL PAPERS, 1965, 3 (1PA) :317-&

[3] Kinetics of phase change I - General theory [J].

Avrami, M .

JOURNAL OF CHEMICAL PHYSICS, 1939, 7 (12) :1103-1112

[4]

Bhattacharyya AR, 2006, MACROMOL SYMP, V233, P161, DOI 10.1002/masy.200650121

[5] THE CRYSTAL STRUCTURES OF 2 POLYAMIDES (NYLONS) [J].

BUNN, CW ;

GARNER, EV .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1947, 189 (1016) :39-&

[6] Structure and thermal properties of blends of nylon 6 and a liquid crystal copolyester [J].

Campoy, I ;

Gomez, MA ;

Marco, C .

POLYMER, 1998, 39 (25) :6279-6288

[7] Isothermal crystallization of nylon 6/liquid crystal copolyester blends [J].

Campoy, I ;

Gómez, MA ;

Marco, C .

POLYMER, 1999, 40 (15) :4259-4271

[8] Non-isothermal crystallization of polymers [J].

Di Lorenzo, ML ;

Silvestre, C .

PROGRESS IN POLYMER SCIENCE, 1999, 24 (06) :917-950

[9]

Doyle CD., 1962, J Appl Polym Sci, V6, P639, DOI [DOI 10.1002/APP.1962.070062406, 10.1002/app.1962.070062406]

[10] Thermal decomposition and oxidation ageing behaviour of polypropylene/halloysite nanotube nanocomposites [J].

Du, Mingliang ;

Guo, Baochun ;

Liu, Mingxian ;

Jia, Demin .

POLYMERS & POLYMER COMPOSITES, 2007, 15 (04) :321-328

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