Injection molded thermoplastic starch/natural rubber/clay nanocomposites: Morphology and mechanical properties

Mondragón, Margarita; Hernández, Esteban; Rivera‐Armenta, José Luis; Rodríguez-González, Francisco

doi:10.1016/j.carbpol.2008.12.008

Cited by 57 publications

(38 citation statements)

References 29 publications

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“…As it was stated, the mechanical properties are strongly influenced by the clay type, the glycerol and clay content, the clay's gallery spacing in the intercalated/exfoliated state into the nanocomposite, and the clay mixing mode [144,153,[166][167][168]. The Young's modulus increases linearly with the gallery spacing ( Fig.…”

Section: Comparison Between Some Mechanical Properties Of Different Cmentioning

confidence: 87%

Starch/Clay Nano-Biocomposites

Vázquez

Cyras

Álvarez

et al. 2012

Green Energy and Technology

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The aim of this chapter is to describe the main studies and results on starch-based nanocomposites reinforced with clay particles. This particular combination leads to the formation of a nanocomposite material with novel properties. However, a good knowledge about starch (structure, type, chemical and physical modification) and its rheological behaviour is necessary for developing these nanocomposites. Many factors and processing parameters affect the final properties of the starch based nano-biocomposites. The main factors which influence the mechanical properties of the nano-biocomposites will be analyzed such as the type of clay, the chemical modification of clay, the type of plasticizer, the water humidity test conditions, the use of chemically modified starches, the thermal stability and water absorption. In addition, the influence of different processing techniques and mixing methods will be studied.

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Section: Comparison Between Some Mechanical Properties Of Different Cmentioning

confidence: 87%

Starch/Clay Nano-Biocomposites

Vázquez

Cyras

Álvarez

et al. 2012

Green Energy and Technology

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“…[28] High particle aspect ratios are key for increasing the moduli of filled polymer composites [29].…”

Section: Composites Characterizationmentioning

confidence: 99%

Surfactant-free dimer fatty acid polyamide/montmorillonite bio-nanocomposites

Macheca

Gnanasekaran²,

Focke³

2013

Colloid Polym Sci

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Polyamide bio-nanocomposites were successfully prepared using a surfactant-free approach. The clay morphology was fixed by dispersing the ammonium ion-exchanged clay in acetic acid. This was mixed wi th an aceti c aci d sol uti on of the polyamide and the composite was recovered by precipitation with water. The composites featured a mixed morphology containing some exfoliated clay sheets together with nano-sized clay tactoids.Bio-nanocomposites containing as much as 27.5 wt.% clay were obtained. At this filler level, and depending on the temperature, the modulus was up to nine times higher than that of the parent polymer. Addition of clay also increased the glass transition temperature by as much as 5°C. This indicates that the high interfacial surface area, presented by the clay platelets dispersed in the matrix, significantly impaired the polymer chain mobility.

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“…These improvements may include increased strength, higher modulus [22]. with rubber as has been reported previously [27], while the crystalline phases are associated with the zeolite components [28]. The XRD patterns of the samples reinforced with uncalcined zeolite are presented in Figure 4 and the patterns for the samples reinforced with calcined zeolite are presented in Figure 5.…”

Section: Resultsmentioning

confidence: 72%

The Effect Zeolite Addition in Natural Rubber Polypropylene Composite on Mechanical, Structure, and Thermal Characteristics

Bukit¹,

Frida²

2014

MST

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This study was conducted to determine the effect of zeolite as filler on mechanical properties, and thermal structure blends of natural rubber and polypropylene (NR/PP). In this study, NR/PP/PP-g-MA blends was filled uncalcined zeolite and calcined zeolite at different weight percent of the 2, 4, and 6%. Samples were characterized to determine the tensile strength, fracture elongation and Young's modulus. Structure of the samples was investigated using XRD method and thermal characteristics were analyzed using DTA/TGA technique. The results obtained for tensile strength showed a significant influence with the addition zeolite of the NR/PP blends at 2% by weight of the composition (8 MPa) and decreased with increasing zeolite composition uncalcined zeolite or calcined zeolite. At 2% to 6% by weight of an increase in Young's modulus, for which uncalcined zeolite function more effectively than the calcined zeolite. On the other hand, the addition of uncalcined zeolite and calcined zeolite did not result in decreased fracture elongation. The XRD analysis zeolite indicate the existence of amorphous phase and crystalline mineral type mordenite (CaAl 2 Si 10 O 24 .7 H 2 O). In general, cristality of samples filled with calcined zeolite slightly higher than the uncalcined zeolite at the same amount and intercalation occurs between the zeolite matrix NR/PP. Thermal analysis showed that the samples are filled with calcined zeolite has a thermal resistance higher than the uncalcined zeolite, the melting point NR/PP 165.0 °C with the addition of 6 wt% zeolite melting point to 186.7 °C. AbstrakPengaruh Penambahan Zeolit pada Komposit Karet Alam Polipropilena terhadap Sifat Mekanik, Struktur dan Termal. Penelitian ini dilakukan untuk mengetahui pengaruh zeolit sebagai bahan pengisi terhadap sifat mekanik, struktur dan termal dari campuran karet alam dan polypropylene (NR/PP). Dalam penelitian ini, campuran NR/PP/PP-g-MA diisi dengan zeolit tanpa kalsinasi dan zeolit kalsinasi pada persen berat yang berbeda yakni 2, 4, dan 6%. Sampel dikarakterisasi untuk menentukan kekuatan tarik, perpanjangan putus dan modulus Young. Struktur sampel diteliti menggunakan metode XRD dan karakteristik termal dianalisis dengan menggunakan DTA/TGA. Hasil yang diperoleh untuk kekuatan tarik menunjukkan adanya pengaruh yang signifikan dengan penambahan zeolit pada campuran NR/PP pada komposisi 2% berat (8 MPa) dan terjadi penurunan dengan bertambahnya komposisi zeolit baik kalsinasi maupun tanpa kalsinasi. Pada 2% sampai 6% berat modulus Young terjadi peningkatan, untuk zeolit yang tidak dikalsinasi berfungsi lebih efektif dibandingkan dengan zeolit kalsinasi. Di sisi lain, penambahan zeolit kalsinasi dan tidak dikalsinasi menghasilkan penurunan perpanjangan putus. Analisis XRD dari zeolit menunjukkan adanya fase amorf dan kristal tipe mineral mordenite (CaAl 2 Si 10 O 24 .7 H 2 O). Secara umum, kristalitas dari sampel yang diisi dengan zeolit kalsinasi sedikit lebih tinggi dari pada zeolit tanpa kalsinasi pada jumlah yang sama dan terjadi ...

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Injection molded thermoplastic starch/natural rubber/clay nanocomposites: Morphology and mechanical properties

Cited by 57 publications

References 29 publications

Starch/Clay Nano-Biocomposites

Starch/Clay Nano-Biocomposites

Surfactant-free dimer fatty acid polyamide/montmorillonite bio-nanocomposites

The Effect Zeolite Addition in Natural Rubber Polypropylene Composite on Mechanical, Structure, and Thermal Characteristics

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