Nanocomposites based on poly-d,l-lactide and multiwall carbon nanotubes

Krul, L. P.; Volozhyn, A.I.; Belov, Dmitry A.; Poloiko, N.A.; Artushkevich, A.S.; Жданок, С. А.; Solntsev, A. P.; Krauklis, A. V.; Zhukova, I

doi:10.1016/j.bioeng.2006.05.021

Cited by 25 publications

(22 citation statements)

References 5 publications

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“…Various researches have shown that there is high potential for further improvement of the properties of HNT nanocomposites by appropriate compatibilization . Another type of tubular reinforcing nanofiller that attracts attention for reinforcement of PLA is carbon nanotube (CNT) . The addition of CNT to PLA induces positive changes in mechanical, thermal, and electrical properties .…”

Section: Introductionmentioning

confidence: 99%

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Comparison of natural halloysite with synthetic carbon nanotubes in poly(lactic acid) based composites

2015

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The objective of this study is to compare the mechanical properties, structure and degradability of the nanocomposites prepared with tubular nanofillers, halloysite (HNT) and carbon nanotube (CNT) in poly(lactic acid) (PLA), and thermoplastic polyurethane (TPU) toughened PLA (T‐PLA) matrices. In the PLA matrix, CNT increased, whereas HNT decreased the tensile strength with increasing filler content. Also, the elongation at break and impact strength decreased with increasing CNT content, but these properties were relatively unchanged with increasing HNT content. However, when (TPU) was used as an impact modifier‐compatibilizer, addition of HNT further increased the impact strength and the elongation at break of the matrix, since short and straight HNT fibers were pulled out from the extensible, toughened matrix. The long and curvy CNT fillers always caused brittle fracture and affected the impact strength and elongation at break in a negative manner as the CNT content was increased. Both types of fillers did not significantly influence the degradation of PLA or toughened PLA matrices. POLYM. COMPOS., 38:2337–2346, 2017. © 2015 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

“…Another type of tubular reinforcing nanofiller that attracts attention for reinforcement of PLA is carbon nanotube (CNT) . The addition of CNT to PLA induces positive changes in mechanical, thermal, and electrical properties .…”

Section: Introductionmentioning

confidence: 99%

Comparison of natural halloysite with synthetic carbon nanotubes in poly(lactic acid) based composites

2015

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“…The outstanding properties of CNTs make them an attractive alternative in the production of composites with advanced performance. However, the preparation of composites exhibiting satisfactory properties is still a target of many endeavours 12. CNTs have been used as fillers in many polymer matrices, such as polypropylene,13 nylon 6,14 polystyrene,15 polyacrylonitrile16 and PLLA 17–19…”

Section: Introductionmentioning

confidence: 99%

Thermal degradation behaviour of multi‐walled carbon nanotube‐reinforced poly(L‐lactide) nanocomposites

Kim

Chae

Kwon

et al. 2009

Polymer International

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BACKGROUND: Polymer/multi‐walled carbon nanotube (MWCNT) composites are one of the most promising alternatives to conventional polymer composites filled with micrometre‐sized fillers. This approach can also be applied for the improvement of mechanical properties and thermal stability of biodegradable aliphatic polyesters, such as poly(L‐lactide) (PLLA), which have been receiving increasing attention due to environmental concerns. Thermal degradation behaviour provides useful information for the determination of the optimum processing conditions and for identification of potential applications of final products. RESULTS: The PLLA/MWCNT composites investigated showed a higher thermal degradation peak temperature and onset temperature of degradation along with a higher amount of residue at the completion of degradation than neat PLLA. Moreover, PLLA/MWCNT composites with a greater MWCNT content showed higher activation energy of thermal degradation than those with a lower MWCNT loading, which confirmed the positive effect of MWCNT incorporation on the enhancement of PLLA thermal stability. CONCLUSION: This study explored the thermal degradation behaviour of PLLA/MWCNT composites by observing the weight loss, molecular weight and mechanical properties during non‐isothermal and isothermal degradation. The incorporation of MWCNTs into the PLLA matrix enhanced considerably the mechanical properties and thermal stability. Copyright © 2009 Society of Chemical Industry

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“…There are three main approaches to prepare polymer/CNTs nanocomposites: (a) melt extrusion,2, 3 (b) in situ polymerization,5–8 and (c) solution mixing 9–13. However, the development of such nanocomposites has been impeded by the dispersion of CNTs in polymers matrix because of the strong intramolecular forces that exist between CNTs.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of homogeneously dispersed polyamide 6/MWNTs nanocomposites via simultaneous in situ anionic ring‐opening polymerization and compatibilization

Yan

Yang

2009

J of Applied Polymer Sci

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Toluene 2, 4-diisocyanate (TDI) functionalized multiwalled carbon nanotubes (MWNTs-NCO) were used to prepare monomer casting polyamide 6 (MCPA6)/ MWNTs nanocomposites via in situ anionic ring-opening polymerization (AROP). Isocyanate groups of MWNTs-NCO could serve as AROP activators of e-caprolactam (CL) in the in situ polymerization. Fourier transform infrared (FTIR) showed that a graft copolymer of PA6 and MWNTs was formed in the in situ polymerization. MWNTs-PA6 covalent bonds of the graft copolymer constituted a strong type of interfacial interaction in the nanocomposites and increased the compatibility of MWNTs and MCPA6 matrix. The nanocomposites were characterized for the morphology, mechanical, crystallization, and thermal properties through field emission transmission electron microscopy (FETEM), tensile testing, differential scanning calorimeter (DSC), and thermogravimetric analysis (TGA). FETEM analysis showed that MWNTs were homogeneously dispersed in MCPA6 matrix. The initial tensile strengths and tensile modulus of the nanocomposite with 1.5 wt % loading of MWNTs were enhanced by about 16 and 13%, respectively, compared with the corresponding values for neat MCPA6. DSC analysis indicated that the crystallization temperature of the nanocomposites was increased by 8 C by adding 1.5 wt % MWNTs compared with pure MCPA6. Besides, it was found that the thermal stability of MCPA6 was improved by the addition of the MWNTs.

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Nanocomposites based on poly-d,l-lactide and multiwall carbon nanotubes

Cited by 25 publications

References 5 publications

Comparison of natural halloysite with synthetic carbon nanotubes in poly(lactic acid) based composites

Comparison of natural halloysite with synthetic carbon nanotubes in poly(lactic acid) based composites

Thermal degradation behaviour of multi‐walled carbon nanotube‐reinforced poly(L‐lactide) nanocomposites

Synthesis and properties of homogeneously dispersed polyamide 6/MWNTs nanocomposites via simultaneous in situ anionic ring‐opening polymerization and compatibilization

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