Environmental surface effects on ABS resins

Gesner, B. D.

doi:10.1002/app.1965.070091117

Cited by 41 publications

(13 citation statements)

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“…While the loss of mechanical properties in ABS is often attributed to thermo‐oxidative degradation in the PB phase, thermo‐oxidative degradation and physical aging can also occur in the SAN phase 15–17…”

Section: Resultsmentioning

confidence: 99%

“…Many studies have been directed toward understanding how chemical aging occurs in ABS and how its effects can be minimized. Gesner,15 Alekseev et al,16 and Tiganis et al17 have shown that the thermo‐oxidation of ABS occurs in the polybutadiene (PB) phase of the resin. The results of another study regarding degradation of ABS during processing showed that PB was the least stable component toward thermal oxidation 18…”

Section: Introductionmentioning

confidence: 99%

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Morphology, thermal, and mechanical properties of acrylonitrile–butadiene–styrene/carbon black composites

Shenavar

Abbasi

2007

J of Applied Polymer Sci

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Acrylonitrile-butadiene-styrene (ABS) polymers are susceptible to degradation that increases the yellowness of the polymer, distorts the surface glossy, and affects the mechanical properties. One way to protect ABS against degradation is the addition of carbon black (CB) that can act as a stabilizer. In this work, CB was dispersed in ABS through melt-compounding. Electron microscopy was used to study the morphology of the filled-and unfilled-ABS, and revealed that the CB particles/aggregates were distributed within the styrene-acrylonitrile (SAN) phase and around the PB phase. The results of the Fourier transform infrared spectroscopy showed that upon processing of ABS, crosslinking in the polybutadiene (PB) phase was the governing degradation mechanism. Increasing the CB content resulted in increasing the heat stability of the ABS/CB compounds, which was confirmed by thermogravimetric analysis. The DTA results showed that the PB degradation peak occurring at about 3958C was disappeared by addition of CB. Impact strength test was performed to study the effect of CB on the toughness of ABS. Impact strength was reduced with increasing CB loading.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Morphology, thermal, and mechanical properties of acrylonitrile–butadiene–styrene/carbon black composites

Shenavar

Abbasi

2007

J of Applied Polymer Sci

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“…Based on an evaluaUon of stabilized commercial ABS samples having various compositions. Gesner ( 1) proposed that differences in percent graWng account for the stability differences (induction times) observed. Htrai (8) reanalyzed the data and proposed that the rates of thermal oxidation of stabilized ABS samples are proportional to the rubber content consisting of additives dispersed in two-phase elastomer-thermoplastic blends.…”

Section: Introductionmentioning

confidence: 99%

Effects of the multiphase nature in ABS and related systems on thermal oxidative degradation and stabilization

Kulich

Wolkowicz²,

Wozny

1993

Makromolekulare Chemie. Macromolecular Symposia

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Multiphase polymer blends contain compositionally distinct polymeric domains which can differ significantly in oxidative stability. Because the solubility parameters of the polymeric components will also differ, stabilizer concentrations in each phase may not be equal. This morphological aspect to the oxidation process was investigated by examining the oxidative behavior of the phase components in ABS. It is shown that the effects of rubber phase level on the oxidation process can be interpreted in terms of stabilizer partitioning. Data utilizing microscopy techniques to assess stabilizer concentrations in the rubber and thermoplastic phases in ABS and related model rubber modified systems are presented. Partitioning behavior is shown to depend on both additive and polymer composition and correlate to calculated solubility parameters.

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“…They reported an activation energy of 41.84 KJ/mol or less for the initiation process from which hydroperoxide was formed. Gesner has reported the effect of aging on ABS plastics properties (5). Casale and coworkers have studied ABS degradation during processing and during natural and artificial light aging (6).…”

Section: Introductionmentioning

confidence: 99%

Methods for study of thermal aging and stabilization of grafted acrylonitrile‐butadiene‐styrene (ABS) terpolymers

Chang¹

1982

Polymer Engineering & Sci

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Acrylonitrile‐butadiene‐styrene (ABS) grafted terpolymers are apt to oxidize at an elevated temperature and its stabilization by an antioxidant is critical to processing and performance. The differential thermal analysis was used to study the effect of the AgeRite® Geltrol, a modified high molecular weight hindered phenol antioxidant, on the ABS thermal oxidation. The Kissinger equation was found to be accurate enough to determine the activation energy of oxidation. The induction time was also measured and these results were compared with the activation energies. The polybutadiene component of ABS was oxidized rapidly around 200°C under an oxygen atmosphere while the styrene‐acrylonitrile (SAN) component was oxidized at a higher temperature. Air oven aging at 130°C affected the Izod impact (notched), ultimate elongation, but not the ultimate tensile, melt index and morphology. It further confirmed that the polybutadiene component was oxidized and the SAN component was fairly stable at 130°C in air.

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Environmental surface effects on ABS resins

Cited by 41 publications

References 0 publications

Morphology, thermal, and mechanical properties of acrylonitrile–butadiene–styrene/carbon black composites

Morphology, thermal, and mechanical properties of acrylonitrile–butadiene–styrene/carbon black composites

Effects of the multiphase nature in ABS and related systems on thermal oxidative degradation and stabilization

Methods for study of thermal aging and stabilization of grafted acrylonitrile‐butadiene‐styrene (ABS) terpolymers

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