Carbon nanoparticles as effective nucleating agents for polypropylene

被引：40

作者：

Reyes-de Vaaben, S. ^{[2
]}

Aguilar, A. ^{[2
]}

Avalos, F. ^{[2
]}

Ramos-de Valle, L. F. ^{[1
]}

机构：

[1] CIQA, Saltillo 25253, Coahuila, Mexico

[2] Univ Autonoma Coahuila, Fac Ciencias Quim, Saltillo 25000, Coahuila, Mexico

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2008年 / 93卷 / 03期

关键词：

carbon nanofibers; carbon nanotubes; dimethyl-benzylidene sorbitol; isothermal kinetics; lithium benzoate; nucleating agents; polypropylene;

D O I：

10.1007/s10973-007-8591-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The effect Of four nucleating agents on the crystallization of isotactic polypropylene (iPP) was studied by differential scanning calorimetry (DSC) under isothermal and non-isothermal conditions. The nucleating agents are: carbon nanofibers (CNF), carbon nanotubes (CNT), lithium benzoate and dimethyl-benzylidene sorbitol. Avrami's model is used to analyze the isothermal crystallization kinetics of iPP. Based on the increase in crystallization temperature (T-c) and the decrease in half-life time (tau(1/2)) for crystallization, the most efficient nucleating agents are the CNF and CNT, at concentrations as low as 0.001 mass%. Sorbitol and lithium benzoate show to be less efficient, while the sorbitol needs to be present at concentrations above 0.05 mass% to even act as nucleating agent.

引用

页码：947 / 952

页数：6

共 25 条

[1] HETEROGENEOUS NUCLEATION STUDIES ON POLYPROPYLENE [J].

ALGHAZAWI, M ;

SHELDON, RP .

JOURNAL OF POLYMER SCIENCE PART C-POLYMER LETTERS, 1983, 21 (05) :347-351

[2] Composites based on PP/EPDM blends and aramid short fibres. Morphology/behaviour relationship [J].

Arroyo, M ;

Zitzumbo, R ;

Avalos, F .

POLYMER, 2000, 41 (16) :6351-6359

[3] Nucleation ability of multiwall carbon nanotubes in polypropylene composites [J].

Assouline, E ;

Lustiger, A ;

Barber, AH ;

Cooper, CA ;

Klein, E ;

Wachtel, E ;

Wagner, HD .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2003, 41 (05) :520-527

[4] HETEROGENEOUS NUCLEATING AGENTS FOR POLYPROBYLENE CRYSTALLIZATION [J].

BECK, HN .

JOURNAL OF APPLIED POLYMER SCIENCE, 1967, 11 (05) :673-&

[5]

Feng Y, 1998, J APPL POLYM SCI, V69, P2089, DOI 10.1002/(SICI)1097-4628(19980906)69:10<2089::AID-APP20>3.0.CO

[6]

2-W

[7] Thermal stability and crystallization kinetics of isotactic polypropylene/organomontmorillonite nanocomposites [J].

He, JD ;

Cheung, MK ;

Yang, MS ;

Qi, ZN .

JOURNAL OF APPLIED POLYMER SCIENCE, 2003, 89 (12) :3404-3415

[8]

KISSEL WJ, HDB POLYPROPYLENE PO, P11

[9] Mechanical properties of sorbitol-clarified isotactic polypropylene: Influence of additive concentration on polymer structure and yield behavior [J].

Kristiansen, M ;

Tervoort, T ;

Smith, P ;

Goossens, H .

MACROMOLECULES, 2005, 38 (25) :10461-10465

[10] The binary system isotactic polypropylene/bis(3,4-dimethylbenzylidene)sorbitol: Phase behavior, nucleation, and optical properties [J].

Kristiansen, M ;

Werner, M ;

Tervoort, T ;

Smith, P ;

Blomenhofer, M ;

Schmidt, HW .

MACROMOLECULES, 2003, 36 (14) :5150-5156

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