The hydrolytic effect of moisture and hygrothermal aging on poly(butylene succinate)/organo-montmorillonite nanocomposites

Phua, Y.J.; Chow, W. S.; Ishak, Z. A. Mohd

doi:10.1016/j.polymdegradstab.2011.04.017

Cited by 88 publications

(74 citation statements)

References 42 publications

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“…25,26 The band at 1041 cm −1 corresponds to the −OCC− stretching vibration PBS. 24 Most of the saturated hydrocarbons contain methyl groups. These methyl groups show a symmetric stretching band at 2962 cm −1 and an asymmetric stretching band 2872 at cm −1 .…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Injection Molded Sustainable Biocomposites From Poly(butylene succinate) Bioplastic and Perennial Grass

Muthuraj

Misra

Mohanty

2015

ACS Sustainable Chem. Eng.

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Biocomposites from poly(butylene succinate) (PBS) and perennial grass (miscanthus fibers) were successfully prepared by extrusion and injection molding methods with different fiber loadings. The tensile strength of uncompatibilized PBS/miscanthus composites was much lower compared to that of neat PBS. Unlike tensile strength, the flexural and impact strengths were significantly enhanced after incorporation of miscanthus fibers into the PBS matrix. The enhanced flexural strength was attributed to the reinforcing effect of miscathus fibers. The fiber pull-out mechanism is likely responsible for the observed impact strength improvement. Addition of 5 wt % maleic anhydride (MAH) grafted PBS (MAH-g-PBS) into PBS composites showed a significant improvement in tensile and flexural strength compared to the corresponding uncompatibilized composites and neat matrix. For example, the PBS composites with 50 wt % miscanthus fiber and 5 wt % MAH-g-PBS resulted in 22, 139, and 47% improvements in tensile, flexural, and impact strength compared to neat PBS. These improvements were attributed to the enhanced interfacial interaction between the components, as confirmed by adhesion parameter values and by surface morphological analysis. The load-bearing capacity of the compatibilized and uncompatibilized PBS/miscanthus composites was analyzed using a mathematical model. Overall, this study provides an option for preparing a sustainable biocomposite with superior mechanical and thermo-mechanical properties.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Injection Molded Sustainable Biocomposites From Poly(butylene succinate) Bioplastic and Perennial Grass

Muthuraj

Misra

Mohanty

2015

ACS Sustainable Chem. Eng.

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“…The band at the 1710-1713 cm -1 region was attributed to the C=O stretching vibrations of ester groups in PBS. Meanwhile, the peaks at 1330 and 2945 cm -1 were assigned to the symmetric and asymmetric deformational vibrations of -CH 2 -groups in the PBS main chains, respectively [29]. There is a clear signal at the transmittance bands of 1780 and 1849 cm -1 in the grafted PBS, while were absent in the neat PBS.…”

Section: Fourier Transform Infrared (Ftir)mentioning

confidence: 95%

“…Besides that, the higher amount of grafted MA contained in C2 is able to provide higher intercalation of the OMMT galleries, which in turn provides a better dispersion of the clay platelets. The addition of stiff reinforcements, such as OMMT was able to improve both the tensile and the flexural modulus [15][16]29]. Table 3 shows that the modulus is slightly increased after the incorporation of PBS-g-MA into the nanocomposites.…”

Section: Characterizations Of Nanocomposites 321 Mechanical Testsmentioning

confidence: 99%

“…However, a slight decreased degree of crystallinity (# c ) in PBS/2%OMMT nanocomposites has been observed. This is attributed to the physical hindrance of OMMT platelets for the mobility and flexibility of the polymer chains to fold and join the crystallization growth front [14][15]29]. An obvious reduction in T c is observed in the PBS/PBS-g-MA blend, accompanied with a slight improvement in # c to 61.7 and 62.5% in the presence of C1 and C2, respectively.…”

Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 99%

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Reactive processing of maleic anhydride-grafted poly(butylene succinate) and the compatibilizing effect on poly(butylene succinate) nanocomposites

Phua¹,

Chow²,

Ishak³

2013

Express Polym. Lett.

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Abstract. In this study, maleic anhydride-grafted poly(butylene succinate) (PBS-g-MA) was synthesized via reactive meltgrafting process using different initiator contents. The grafting efficiency was increased with the initiator content, manifested by the higher degree of grafting in PBS-g-MA. The grafting reaction was confirmed through Fourier transform infrared (FTIR) spectroscopy and nuclear magnetic resonance (NMR) spectroscopy. Then, PBS-g-MA was incorporated into organo-montmorillonite (OMMT) filled poly(butylene succinate) (PBS) nanocomposites as compatibilizer. Mechanical properties of PBS nanocomposites were enhanced after compatibilized with PBS-g-MA, due to the better dispersion of OMMT in PBS matrix and the improved filler-matrix interfacial interactions. This was verifiable through X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Differential scanning calorimetry (DSC) showed that the degree of crystallinity and melting temperature increased after addition of PBS-g-MA. However, the presence of PBS-g-MA did not favor the thermal stability of the nanocomposites, as reported in the thermogravimetry (TGA).

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“…glass fibers, in traditional polymeric matrix composites [4,6,7,11]. However, they also have undeniable drawbacks such as low thermal stability, which limits the choice of polymeric matrices [4,7,9], and hydrophilicity, which causes low compatibility with hydrophobic polymers [4,8,9,11,12] and leads to poor resistance against moisture uptake, irreversibly affecting the mechanical, physical and chemical properties of the composite [5,13,14]. Moreover, physical and chemical features of lignocellulosic fibers differ highly within the same species depending on soil, harvesting time, extraction methods and climatic, M A N U S C R I P T…”

Section: Introductionmentioning

confidence: 99%

Biocomposites based on poly(butylene succinate) and curaua: Mechanical and morphological properties

et al. 2015

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Biocomposites based on poly(butylene succinate) (PBS) and curaua fibers have been produced by compression molding, and investigated as a function of fiber length and amount.Mechanical tests, water uptake and morphology studies were carried out in order to assess the composite features according to the characteristics of the reinforcing agents. It turns out that the impact and flexural strengths increase with fiber content. Moreover, the fiber length, varying from 1 to 4 cm for the composite reinforced with 20 wt% of fiber, influences impact strength, which is higher for shorter than for longer fibers. However, flexural strength is not greatly influenced by the length of the fibers. Water uptake studies reveal a higher sensitivity of the material to fiber content rather than fiber size. Biocomposites, which are characterized by enhanced mechanical properties as compared to PBS, can have different applications, for example in rigid packaging or interior car parts.

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The hydrolytic effect of moisture and hygrothermal aging on poly(butylene succinate)/organo-montmorillonite nanocomposites

Cited by 88 publications

References 42 publications

Injection Molded Sustainable Biocomposites From Poly(butylene succinate) Bioplastic and Perennial Grass

Injection Molded Sustainable Biocomposites From Poly(butylene succinate) Bioplastic and Perennial Grass

Reactive processing of maleic anhydride-grafted poly(butylene succinate) and the compatibilizing effect on poly(butylene succinate) nanocomposites

Biocomposites based on poly(butylene succinate) and curaua: Mechanical and morphological properties

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