Preparation and characterization of exfoliated polystyrene/clay nanocomposites using a cationic radical initiator-MMT hybrid

Uthirakumar, Periyayya; Song, Min-Ki; Nah, Changwoon; Lee, Youn-Sik

doi:10.1016/j.eurpolymj.2004.10.004

Cited by 73 publications

(77 citation statements)

References 20 publications

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“…ese outcomes corresponded with the research of Uthirakumar et al [64], Mohanty and Nayak [65], and Park et al [22]. e tensile strength of PS/ORG was highly enhanced at a low nanoclay loading of 1 wt.% improving by about 15% compared to the pristine PS and continuously decreased from 9% to 3% enhancement with the increment of the nanoclay contents from 2 to 3 wt.%, respectively.…”

Section: Part 2: Preparation Of the Ps/clay Nanocomposite Via The Melsupporting

confidence: 88%

“…On the contrary, the low aspect ratio of the intercalated clay stacks, as presented in PS/clay nanocomposites prepared by the organoclay, affected the weak interaction [13]. Similar results were reported from the previous studies of Uthirakumar et al [64] and Mohanty and Nayak [65].…”

Section: Part 2: Preparation Of the Ps/clay Nanocomposite Via The Melsupporting

confidence: 88%

“…is result reveals the powerful interfacial adhesion between the individual nanoclay particles and PS matrix as a result of the clay exfoliation, which was verified by the XRD and TEM results [64]. ese outcomes corresponded with the research of Uthirakumar et al [64], Mohanty and Nayak [65], and Park et al [22].…”

Section: Part 2: Preparation Of the Ps/clay Nanocomposite Via The Melsupporting

confidence: 81%

“…erefore, the XRD and TEM results suggested that there was powerful interfacial adhesion between the individual nanoclay particles and PS matrix [64]. is effect caused significant improvement of the tensile properties in the exfoliated morphology but no extraordinary enhancement for the intercalation of the nanocomposite structures due to the stronger interaction between the PS matrix and nanoclay particles as well as the higher aspect ratio of the filler affecting the significant enhancement of the tensile properties [13,61,64].…”

Section: Part 2: Preparation Of the Ps/clay Nanocomposite Via The Melmentioning

confidence: 97%

“…is effect caused significant improvement of the tensile properties in the exfoliated morphology but no extraordinary enhancement for the intercalation of the nanocomposite structures due to the stronger interaction between the PS matrix and nanoclay particles as well as the higher aspect ratio of the filler affecting the significant enhancement of the tensile properties [13,61,64]. e photographs that expressed the transparency of the PS/Aero and PS/ORG nanocomposites are shown in Figure 8.…”

Section: Part 2: Preparation Of the Ps/clay Nanocomposite Via The Melmentioning

confidence: 99%

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A Novel and Facile Nanoclay Aerogel Masterbatch toward Exfoliated Polymer‐Clay Nanocomposites through a Melt‐Mixing Process

Luecha

Magaraphan

2018

Advances in Materials Science and Engineering

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is research employed a novel and facile approach called nanoclay aerogel masterbatch.. is innovative technique was conducted by attaching the clay layers directly onto a mobile polymer, for example, polyethylene glycol (PEG), in order to modify the clay layer through PEG-clay intercalation and PEG-hydrogen bonding. is state was maintained with a small amount of the anionic polymer hydrogel, for example, kappa-carrageenan (KC), and turning it into a highly porous and fragile structure by freeze-drying, thus a so-called nanoclay aerogel masterbatch. e facile nanoclay aerogel masterbatch was able to be attained even at high clay loadings (55-67 wt.% of the inorganic clay content) with constant PEG and KC loadings. e interlayer spacing enlargement of the nanoclay galleries was around 17Å with the typical lamellar morphology like a house of cards structure. e density values were within 0.108-0.122 g·cm −3 . e thermal stabilities were up to 270°C, revealing better thermal stability for melt mixing with the commodity plastics at a high melting temperature. e flowability and processability were certified by the melt flow index (MFI) results. e highest nanoclay loading capacity (67 wt.%) of the achieved nanoclay aerogel masterbatch was selected to prepare PS-clay nanocomposites via a melt-mixing process. e comparative nanocomposites were produced by using organoclay. e results of the X-ray diffraction (XRD) and transmission electron microscopy (TEM) exhibited that the exfoliated morphologies were obtained at all clay contents (1-3 wt.%); however, the intercalated structure was gained by using organoclay.e outstanding transparency and brightness were remarked from the specimens prepared by using the nanoclay aerogel masterbatch. e brownish specimens were observed by using organoclay. e significant improvements of tensile properties, glass transition temperature (T g ), and thermal stability were noticed from the nanocomposites prepared using the nanoclay aerogel masterbatch.

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Section: Part 2: Preparation Of the Ps/clay Nanocomposite Via The Melsupporting

confidence: 88%

Section: Part 2: Preparation Of the Ps/clay Nanocomposite Via The Melsupporting

confidence: 88%

Section: Part 2: Preparation Of the Ps/clay Nanocomposite Via The Melsupporting

confidence: 81%

Section: Part 2: Preparation Of the Ps/clay Nanocomposite Via The Melmentioning

confidence: 97%

Section: Part 2: Preparation Of the Ps/clay Nanocomposite Via The Melmentioning

confidence: 99%

See 3 more Smart Citations

A Novel and Facile Nanoclay Aerogel Masterbatch toward Exfoliated Polymer‐Clay Nanocomposites through a Melt‐Mixing Process

Luecha

Magaraphan

2018

Advances in Materials Science and Engineering

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Polystyrene–Montmorillonite Nanocomposites by In‐situ Polymerization and Their Properties

Simons

Qiao

Bateman

2011

In‐Situ Synthesis of Polymer Nanocomposites

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Properties of high‐impact polystyrene/organoclay nanocomposites synthesized via in situ polymerization

Hwang

Joo

Lee

2008

J of Applied Polymer Sci

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High-impact polystyrene (HIPS)/organically modified montmorillonite (organoclay) nanocomposites were synthesized via in situ polymerization. The effects of the organoclay on the morphology and material properties of HIPS/organoclay nanocomposites were investigated. Xray diffraction and transmission electron microscopy experiments revealed that intercalation of polymer chains into silicate layers was achieved, and the addition of nanoclay led to an increase in the size of the rubber domain in the composites. In comparison with neat HIPS, the HIPS/organoclay nanocomposites exhibited improved thermal stability as well as an increase in both the complex viscosity and storage modulus. The presence of intercalated organoclay drastically enhanced the gas-barrier properties because of the increase in the tortuosity of the diffusive path for a penetrating gas molecule. Some mechanical properties, including the tensile modulus, were superior to those of conventional HIPS. Finally, the preparation of the nanocomposites with a minimal loss of impact properties was proposed through changes in the synthetic procedure.

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Preparation and characterization of exfoliated polystyrene/clay nanocomposites using a cationic radical initiator-MMT hybrid

Cited by 73 publications

References 20 publications

A Novel and Facile Nanoclay Aerogel Masterbatch toward Exfoliated Polymer‐Clay Nanocomposites through a Melt‐Mixing Process

A Novel and Facile Nanoclay Aerogel Masterbatch toward Exfoliated Polymer‐Clay Nanocomposites through a Melt‐Mixing Process

Polystyrene–Montmorillonite Nanocomposites by In‐situ Polymerization and Their Properties

Properties of high‐impact polystyrene/organoclay nanocomposites synthesized via in situ polymerization

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