Effect of mixing conditions on mechanical properties of polylactide/montmorillonite clay nanocomposites

Jollands, Margaret; Gupta, Rahul

doi:10.1002/app.32475

Cited by 42 publications

(31 citation statements)

References 11 publications

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“…8 Simultaneous increases in tensile modulus and in elongation at break could be attained with small quantities of CNTs, which are, however, much more expensive than the electrospun fiber used in the composites described in the present work. 11 The existence of an optimum level of filler, beyond which the properties decrease instead of increasing, is common in composites 3 and nanocomposites [48][49][50] and is often associated to the effect of the presence of the filler on the crystallinity of the matrix. 50 A number of authors stressed the importance of lamellar morphology in understanding the reasons of reinforcement.…”

Section: Resultsmentioning

confidence: 99%

Electrospun nylon fibers for the improvement of mechanical properties and for the control of degradation behavior of poly(lactide)-based composites

et al. 2012

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Poly(lactide) (PLA) composites filled with electrospun nylon 6 fibers were prepared. This allowed us to simultaneously improve the mechanical properties and tune the degradation of the PLA matrix. The interfacial adhesion between the PLA matrix and the nylon fibers was good. The major effect of electrospun fibers on the matrix was that of modifying the semicrystalline framework, thickening the polymer lamellae. This allowed an increase in the mechanical properties of the material, and on the other hand to modify its degradation behavior. The modulus of the composites was increased up to 3-fold with respect to neat PLA. The peculiar morphology of matrix-filler interaction moreover slowed down the degradation rate of the material and improved the dimensional stability of the specimens during the degradation process. This shows the potential of electrospun fibers as a way to tune the durability of PLA-based products, widening the range of application of this promising material.

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Section: Resultsmentioning

confidence: 99%

Electrospun nylon fibers for the improvement of mechanical properties and for the control of degradation behavior of poly(lactide)-based composites

et al. 2012

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“…Studies have indicated that mechanical performance is directly affected by the quality of dispersion and interfacial adhesion between components. 31,32 Thus, with increasing length of compounding, the more extensive dispersion of chitosan within the matrix and more uniform distribution of compatibilizer at the interfaces between the matrix polymer and chitosan enhanced the overall mechanical performance of the blend films. A more uniform distribution of stress transfer from the LDPE matrix to chitosan at the interfaces resulted in an increase in TS.…”

Section: Mechanical Properties Of the Pe/chitosan Blend Filmsmentioning

confidence: 94%

Improved miscibility of low‐density polyethylene/chitosan blends through variation in the compounding length

Tan

Lim

Tay

et al. 2016

J of Applied Polymer Sci

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Synthetic biopolymer blends are gaining interest in the packaging industry because the incorporation of natural materials imparts biodegradable properties to films. In this study, polyethylene/chitosan (chitosan) films with thicknesses of about 0.3 6 0.01 mm were fabricated via compression molding. The effects of the variation in the length of compounding as a function of the length/diameter (l/d) ratio (15:1, 30:1, 45:1, 60:1, and 75:1) were investigated. The experimental results show that a higher degree of miscibility of the blends was achieved with increasing compounding length; this led to improved mechanical properties in the films, and this was verified by the statistical analysis of data with the analysis of variance procedure. The tensile strength (TS) increased by about 25%, whereas the elongation at break (E break ) increased by twofold. Films fabricated from blends compounded with an l/d ratio of 60:1 had the highest TS and E break values, and the TS was comparable to that of low-density polyethylene films. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43796.

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“…PAA-superpressant is a substance supressing nucleation and growth of apatite crystals during in situ wet chemical synthesis, widely used for production of micro and nanocrystalline apatite [295,296] and biometric formation of its particles [297,298].…”

Section: Biodegrading "Green" Bionanocompositesmentioning

confidence: 99%

Bionanocomposites Assembled by “From Bottom to Top” Method

Pomogailo

Джардималиева

2014

Nanostructured Materials Preparation via Condensation Ways

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Particles, which take part in different biological processes, have a special place in nanometer composites. Rich and variable biochemistry of proteins displays key importance of a nanometer phenomenon for a working mechanism of living organisms [1,2], and this provides a wide range of possibilities for development of new types of hybrid nanomaterials with constructible structures, functions and shapes [3][4][5].Integration of nanoparticles and biomolecules, each having unique properties, on the one hand, and being in the same nanometer scale (enzymes, antigens, and antibodies of typical sizes 2-20 nm like nanoparticles), on the other hand, as of two structurally compatible classes of materials, gives resultant new hybrid nanomaterials with synergetic properties and functions (Fig. 7.1).Interaction of nanoparticles with biopolymers (proteins, nucleic acids, polysaccharides) plays very important role in enzyme catalysis, biosorption, biohydrometallurgy, geobiotechnology, etc.). There is a great interest to nanomaterials, which can be used in biomedical and pharmaceutical applications due to their biocompatibility and biodegradation. At the same time bionanocomposites should meet some demands to plasticity of a matrix, they should have improved barrier, antimicrobial properties, ability to controlled release of bioactive substances such as antimicrobial agents, antioxidants, drugs, calcium compounds in biologically available form and their mixtures, etc. Biopolymers, such as natural and synthetic proteins, obtained by chemical methods or by genetic modification of microorganisms or plants, nucleic acids (including synthetic ones), biodegraded complex polyethers, such as polylactic acid, and its derivatives, oligo-hydroxyalkanoate, most often, polyhydroxybutyrate, their copolymers, biomedical materials, such as hydroxyapatites, are used. There is an interesting group of materials for this purpose including synthetic and natural (vegetable and animal) polysaccharides, such as cellulose and its derivatives, alginates, dextranes, acacia gum, chitosan, and any of its natural and synthetic derivatives, especially chitosan acetate, and proteins obtained from raw animal materials, as well as proteins from maize (especially zein) or soya, gluten derivatives, gelatin, casein, etc. Relatively widely used in

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Effect of mixing conditions on mechanical properties of polylactide/montmorillonite clay nanocomposites

Cited by 42 publications

References 11 publications

Electrospun nylon fibers for the improvement of mechanical properties and for the control of degradation behavior of poly(lactide)-based composites

Electrospun nylon fibers for the improvement of mechanical properties and for the control of degradation behavior of poly(lactide)-based composites

Improved miscibility of low‐density polyethylene/chitosan blends through variation in the compounding length

Bionanocomposites Assembled by “From Bottom to Top” Method

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