On orientation memory in high density polyethylene - carbon nanofibers composites

被引：11

作者：

Chipara, Mircea ^{[1
]}

Jones, Brian ^{[2
]}

Chipara, Dorina M. ^{[1
]}

Li, Jianhua ^{[3
]}

Lozano, Karen ^{[4
]}

Valloppilly, Shah ^{[5
]}

Sellmyer, David ^{[5
]}

机构：

[1] Univ Texas Rio Grande Valley, Dept Phys, Edinburg, TX 78541 USA

[2] Bruker AXS Inc, 5465 East Cheryl Pkwy, Madison, WI 53711 USA

[3] Rice Univ, 6100 Main St, Houston, TX 77005 USA

[4] Univ Texas Rio Grande Valley, Dept Mech Engn, Edinburg, TX 78541 USA

[5] Univ Nebraska, Dept Phys & Astron, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA

来源：

E-POLYMERS | 2017年 / 17卷 / 04期

基金：

美国国家科学基金会;

关键词：

memory; polyethylene; two-dimensional X-ray spectra; vapor grown carbon nanofiber; X-RAY-DIFFRACTION; MECHANICAL-PROPERTIES; NANOCOMPOSITES; DEFORMATION; SCATTERING; NANOTUBES; MODULUS;

D O I：

10.1515/epoly-2016-0286

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An orientation memory effect in high density polyethylene (HDPE) filled with vapor grown carbon nanofibers (VGCNF) is reported. Two-dimensional X-ray (2DXR) confirmed the reorientation of HDPE crystallites upon the uniaxial stretching of HDPE and HDPE filled by VGCNFs. This anisotropy of 2DXR spectra was decreased by heating all stretched samples (loaded or not loaded by VGCNFs) from room to the melting temperature of HDPE. Upon cooling these samples to room temperature, it was noticed that only the nanocomposite retained a weak partial (uniaxial) order, while HDPE showed a completely isotropic 2DXR spectrum. It was concluded that during the stretching of nanocomposites the crystallites and VGCNFs were aligned along the uniaxial stress. Upon heating, the crystalline phase was melted, while the orientation of the VGCNFs was not significantly disturbed. The recrystallization of the polymer started preferentially from the VGCNF - polymer interphase, resulting into an anisotropic crystalline structure.

引用

页码：303 / 310

页数：8

共 20 条

[1]

Abbasi SH, 2011, E-POLYMERS, V11, P722

[2] Processing effects on the thermo-physical properties of carbon nanotube polyethylene composite [J].

Adhikari, Ananta Raj ;

Chipara, Mircea ;

Lozano, Karen .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 526 (1-2) :123-127

[3] Polyethylene thermal oxidative stabilisation in carbon nanotubes based nanocomposites [J].

Bocchini, Sergio ;

Frache, Alberto ;

Camino, Giovanni ;

Claes, Michael .

EUROPEAN POLYMER JOURNAL, 2007, 43 (08) :3222-3235

[4] A REAL-TIME SIMULTANEOUS SMALL-ANGLE AND WIDE-ANGLE X-RAY-SCATTERING STUDY OF IN-SITU DEFORMATION OF ISOTROPIC POLYETHYLENE [J].

BUTLER, MF ;

DONALD, AM ;

BRAS, W ;

MANT, GR ;

DERBYSHIRE, GE ;

RYAN, AJ .

MACROMOLECULES, 1995, 28 (19) :6383-6393

[5] Plastic Deformation of Semicrystalline Polyethylene by X-ray Scattering: Comparison with Atomistic Simulations [J].

Che, Justin ;

Locker, C. Rebecca ;

Lee, Sanghun ;

Rutledge, Gregory C. ;

Hsiao, Benjamin S. ;

Tsou, Andy H. .

MACROMOLECULES, 2013, 46 (13) :5279-5289

[6]

Chiguma Jr WEJ, 2010, MAT BASEL, V1, P1478

[7] On the assessment of the orientation of carbon nanofibers dispersed within polyethylene by electron spin resonance spectroscopy [J].

Chipara, M. ;

Lozano, K. ;

Chipara, M. D. .

CARBON, 2007, 45 (13) :2698-2701

[8] MORPHOLOGICAL ALTERATIONS DURING TEXTURE-PRODUCING PLASTIC PLANE-STRAIN COMPRESSION OF HIGH-DENSITY POLYETHYLENE [J].

GALESKI, A ;

BARTCZAK, Z ;

ARGON, AS ;

COHEN, RE .

MACROMOLECULES, 1992, 25 (21) :5705-5718

[9] Wetting at polymer surfaces and interfaces [J].

Geoghegan, M ;

Krausch, G .

PROGRESS IN POLYMER SCIENCE, 2003, 28 (02) :261-302

[10] HIGH-MODULUS POLYETHYLENE FIBER STRUCTURE AS SHOWN BY X-RAY-DIFFRACTION [J].

GRUBB, DT ;

PRASAD, K .

MACROMOLECULES, 1992, 25 (18) :4575-4582

← 1 2 →