Thermal properties of polystyrene/group IIB dithizonate films

EI-Mosallamy, El-Said H; Mekewi, Mohamed A.

doi:10.1016/s0254-0584(02)00506-0

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Apart from that, the enhancement of thermal stability was also attributed to the heat diffusion capability of metalized polymer matrix which restricted the material decomposition by lowering mass transfer rate [103,104] . In addition, the presence of Zn(HCz) 2 also reduced the number of unsaturated end polymer chains and gave additional effects on thermal stability of the composites [105] .…”

Section: Effects Of Zinc and Its Compounds On Polymer Degradationmentioning

confidence: 99%

Roles of Calcium, Zinc, Copper and Titanium Compounds on the Degradation of Polymers

Chee

Sin

Bee

et al. 2015

Polymer-Plastics Technology and Engineering

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In this article, the influences of the metallic filler content upon the thermal degradability of polymer composites such as initial degradation temperature, maximum degradation temperature and char content have been critically reviewed using thermogravimetric analysis. Besides that, the review on the relationship between activation energies of polymer/metal composites, which was obtained from various degrade models, and the content of metallic fillers have also been defined. Other thermal properties such as glass transition temperature (T g ) and melting temperature (T m ) have also been reviewed based on the evaluation of differential scanning calorimetry (DSC) analysis.

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Section: Effects Of Zinc and Its Compounds On Polymer Degradationmentioning

confidence: 99%

Roles of Calcium, Zinc, Copper and Titanium Compounds on the Degradation of Polymers

Chee

Sin

Bee

et al. 2015

Polymer-Plastics Technology and Engineering

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show abstract

“…Metal complex compounds also proved feasible in bulk, solution, and heterogeneous systems and even during grafting of some natural fibers [7][8][9][10][11]. In such systems, the rate of polymerization is usually governed conditionally and kinetically as reported [12][13], affecting the polydispersity of the final polymer and the mode of loss of end groups [14], for mainly refining the polymer specific properties toward more challenging applications.…”

Section: Introductionmentioning

confidence: 99%

Salen Transition Metal Complexes as Catalysts for the Synthesis of Photostable Poly(methylmethacrylate)

Mekewi

2005

International Journal of Polymeric Materials

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Polymethylmethacrylate (PMMA) was prepared in presence of Cr (III) and Ni (II) Salen complex compounds as catalysts for the controlled radical polymerization of the methylmethacrylate monomer. The PMMA structure was examined through FT-IR analysis in which characteristic bands of structural tacticity were observed. The PMMA order of tacticity was also identified using 1 HNMR where clear indications of increased polymer tacticity and metal complex intervention with the PMMA growing chains were identified. PMMA samples, prepared in presence of Ni (II) and Cr (III) Salen complex compound, were subjected to various doses of UV light and significant resistance to degradation was noticed. The weight average molecular weight values, using GPC technique, were monitored as the measuring parameter for the PMMA photostability. The results of the present work strongly recommend the use of transition metal Salen complexes as promising catalysts for polymerization of PMMA due to their characteristic activity and the sound resistance toward UV photodegradation the polymer exhibited.

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Enhancing the thermal and mechanical properties of PMMA using zinc carbazone complex as the initiator

El-Mosallamy

2013

J Therm Anal Calorim

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Thermal properties of polystyrene/group IIB dithizonate films

Cited by 3 publications

References 12 publications

Roles of Calcium, Zinc, Copper and Titanium Compounds on the Degradation of Polymers

Roles of Calcium, Zinc, Copper and Titanium Compounds on the Degradation of Polymers

Salen Transition Metal Complexes as Catalysts for the Synthesis of Photostable Poly(methylmethacrylate)

Enhancing the thermal and mechanical properties of PMMA using zinc carbazone complex as the initiator

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