Effects of swelling agents on the crystallization behavior and mechanical properties of polyamide 6/clay nanocomposites

Chen‐Chi, M.; Kuo, Chih‐Ming; Kuan, Hsu‐Chiang; Chiang, Chin‐Lung

doi:10.1002/app.11897

Cited by 54 publications

(25 citation statements)

References 17 publications

(15 reference statements)

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“…1c). This result is consistent with previous reports on Mt intercalated with ALA (Ma et al, 2003;Reichert et al, 1998). As described by Reichert et al, protonated ALA entered the interlayer space of Na-Mt by cation exchange.…”

Section: Characterization Of Mt and Mt-ala Complexsupporting

confidence: 93%

Thermal degradation of organic matter in the interlayer clay–organic complex: A TG-FTIR study on a montmorillonite/12-aminolauric acid system

Liu

Yuan

Qin

et al. 2013

Applied Clay Science

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Section: Characterization Of Mt and Mt-ala Complexsupporting

confidence: 93%

Thermal degradation of organic matter in the interlayer clay–organic complex: A TG-FTIR study on a montmorillonite/12-aminolauric acid system

Liu

Yuan

Qin

et al. 2013

Applied Clay Science

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“…Dodecylamine is one of most popular alkyl ammonium surfactants and has been widely employed for preparation of polymer nanocomposites. The dodecylamine modified MMT improved the mechanical properties for nanocomposites based on PA6 [7] and PP [8]. Recently, nanocomposites based on PA6/PP blends have been extensively studied by many researchers [9,10].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of properties of PA6/PP nanocomposites via organic modification and compatibilization

Kusmono¹,

Ishak²,

Chow³

et al. 2008

Express Polym. Lett.

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Abstract. Nanocomposites based on polyamide 6/polypropylene (PA6/PP = 70/30) blend containing organophilic montmorillonite (OMMT) and maleated polypropylene (PP-g-MA) as compatibilizer were prepared by melt compounding followed by injection molding. Modification of montmorillonite (MMT) with dodecyalmine was successfully performed. The morphological and mechanical properties of nanocomposites were investigated by using x-ray diffraction (XRD), transmission electron microscopy (TEM), tensile, flexural, and impact tests. The thermal stability of nanocomposites was characterized by using thermogravimetric analysis (TGA) and heat distortion temperature (HDT). XRD and TEM results indicated that the intercalated structure was obtained for PA6/PP/MMT composite, a mixture of intercalated and exfoliated structures for PA6/PP/OMMT nanocomposite, and exfoliated structure for PP-g-MA compatibilized PA6/PP/OMMT nancomposite. Thermal stability and HDT of PA6/PP matrix were improved by the addition of both MMT and OMMT. The introduction of PP-g-MA into the PA6/PP/OMMT nanocomposite enhanced the properties such as stiffness, strength, ductility, impact strength, and HDT. This was attributed to the compatibilizing effect of PP-g-MA which improved interfacial adhesion between OMMT with PA6/PP matrix and also promoted the degree of exfoliation of silicate layers in the PA6/PP matrix.

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“…The addition of nano-scale clays can change the crystallization kinetics, the crystalline morphology, the crystal forms, as well as crystallite size. [3][4][5][6][7][8][9][10][11][12][13] This difference in crystalline morphology, in turn, can significantly affect the overall mechanical and physical properties of the materials.…”

Section: Introductionmentioning

confidence: 99%

Non‐Isothermal Crystallization of Poly(trimethylene terephthalate) (PTT)/Clay Nanocomposites

Lesser

2004

Macro Chemistry & Physics

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Summary: The non‐isothermal crystallization of intercalated poly(trimethylene terephthalate) (PTT)/clay nanocomposites was investigated quantitatively by different methods. Non‐isothermal crystallization of pure PTT can be described by the Ozawa equation, but the Ozawa theory is not valid for PTT/clay nanocomposites. The addition of clay into PTT decreases the crystallization half‐time while increasing the crystallinity and crystallization rate. The PTT/modified clay nanocomposites, in turn, have a higher crystallization rate parameter, k1/n, and a lower crystallization half‐time compared to unmodified clay/PTT composites. The crystallization activation energy, calculated from Kissinger equation, of PTT, PTT/unmodified clay, and PTT/modified clay composites are 100, 180, and 198–230 kJ · mol−1, respectively. Similarly, the nucleating activities of the unmodified clay and modified clays are 0.73 and 0.51–0.58, respectively. Although the addition of clay increases the crystallization activation energy, the clay still acts as an effective nucleating agent and increases the crystallization rate and crystallinity of PTT. Further, the modified nanoscale clays are more effective nucleating agents than the unmodified counterparts, and the most effective nucleating concentration of nano‐clay is between 1.0–3.0 wt.‐%.The crystallization half‐time, t1/2, decreases as a function of cooling rate, Q, and decreases with an increase in clay concentration.magnified imageThe crystallization half‐time, t1/2, decreases as a function of cooling rate, Q, and decreases with an increase in clay concentration.

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Effects of swelling agents on the crystallization behavior and mechanical properties of polyamide 6/clay nanocomposites

Cited by 54 publications

References 17 publications

Thermal degradation of organic matter in the interlayer clay–organic complex: A TG-FTIR study on a montmorillonite/12-aminolauric acid system

Thermal degradation of organic matter in the interlayer clay–organic complex: A TG-FTIR study on a montmorillonite/12-aminolauric acid system

Enhancement of properties of PA6/PP nanocomposites via organic modification and compatibilization

Non‐Isothermal Crystallization of Poly(trimethylene terephthalate) (PTT)/Clay Nanocomposites

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